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Carrier TRANSICOLD Vector 8811MT Operation And Service Manual

Multi-temp trailer and rail refrigeration unit
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Operation and Service Manual
TM
Vector 8811MT
Multi-Temp Trailer and Rail Refrigeration Unit
62-12340 Rev A

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Summary of Contents for Carrier TRANSICOLD Vector 8811MT

  • Page 1 Operation and Service Manual Vector 8811MT Multi-Temp Trailer and Rail Refrigeration Unit 62-12340 Rev A...
  • Page 3 Operation and Service Manual VECTOR 8811MT Multi-Temp Trailer Refrigeration Units © Carrier Corporation, 2024 Printed in U. S. A. June 2024...
  • Page 4 Manual Revision History 62-12340 Rev. Date Reason for Release 4/10/2024 Initial Release 6/13/2024 Section 8.6.2: Replaced section with updated instructions for priming the fuel pump; Section 7 – Added alarm P00217; Section 10 – Updated wiring schematics...

  • Page 5: Table Of Contents

    SAFETY PRECAUTIONS ............. . . 1–1 SAFETY PRECAUTIONS .
  • Page 6 2.12 ELECTRICAL DATA ............2–24 2.13 COMPONENT RESISTANCE AND CURRENT DRAW .
  • Page 7 ENGINE/ELECTRIC OPERATION ..........4–2 4.3.1 Soft Start (Bump Start) .
  • Page 8 USB MEMORY DEVICES ............5–9 5.3.1 Data Transfer USB Memory Device .
  • Page 9 REFRIGERANT SYSTEM SERVICE ..........8–20 8.7.1 Refrigerant System Service Connections...
  • Page 10 REFRIGERATION / TEMPERATURE CONTROL ........9–4 9.4.1 Unit Will Not Cool .

  • Page 11: Safety Precautions

    Follow safe work practices and utilize the appropriate protective equipment at all times. Your Carrier Transicold refrigeration unit has been designed with the safety of the operator in mind. During normal operation, all moving parts are fully enclosed to help prevent injury. During all pre-trip inspections, daily inspec- tions, and problem troubleshooting, you may be exposed to moving parts.

  • Page 12: Specific Warning, Caution, And Notice Statements

    Figure 1.1 Lockout/Tagout Specific Warning, Caution, and Notice Statements To help identify the label hazards on the unit and explain the level of awareness each one carries, an explanation is given with the appropriate consequences: DANGER DANGER - warns against an immediate hazard which WILL result in severe personal injury or death.
  • Page 13 A service / shipping sleeve (Carrier Transicold P/N 54-00656-23) must be installed before removal of the generator from the engine. The generator MUST be removed as one piece, with the shim in place.
  • Page 14 Unit uses R-452A refrigerant and POE oil. The use of inert gas brazing procedures is mandatory for all Carrier Transicold refrigeration units; otherwise compressor failure will occur. For more information Refer to Technical Procedure 98-50553-00 Inert Gas Brazing.
  • Page 15 Do not bend tubing on the condenser coil when installing the new condenser. Bend the unit tub- ing if tubes do not align correctly. Under no circumstances should anyone attempt to repair sealed module internal components. Should a problem develop with these components, contact your nearest Carrier Transicold dealer for replacement. Refer to Table 8–5...

  • Page 16: Safety Decals

    Safety Decals 62-12340 1–6...
  • Page 17 1–7 62-12340...
  • Page 18 62-12340 1–8...
  • Page 19 1–9 62-12340...
  • Page 20 62-12340 1–10...
  • Page 21 62-12340 1–14...

  • Page 22: Unit Description

    WARNING The unit is charged with R- 452A refrigerant. General Description The Vector 8811MT incorporates two independent evaporators within the host unit to allow for providing treated air to a two-compartment trailer having a center wall divide. • Control of each compartment is similar to the control of a conventionally divided two-compartment trailer, the difference being the roadside compartment is designated as zone 1 (C1) and the curbside compartment is designated as zone 2 (C2).
  • Page 23 Figure 2.1 Front View - Refrigeration System Components MOUNT ATT AS SHOWN PARTITION 10,11,12 5,6,7 1. Condenser Fans and Motors (CDM1 and CDM2) 13. Compressor Suction Temperature Sensor (CST) 2. Ambient Air Temperature Sensor (AAT) 14. Economizer Outlet Temperature Sensor (ECOT) 3.
  • Page 24 Figure 2.2 Front View - Engine, Control System MOUNT ATT AS SHOWN PARTITION 17 16 19 18 1. Coolant Bottle 17. Mechanical Fuel Pump 2. Fuel Filter/Heater (FH)/Switch (FHTS) or Fuel 18. Engine Oil Fill and Dipstick Head Assembly 19. Rack Position Sensor (RPS) 3.
  • Page 25 Figure 2.3 Evaporator Section - Back Panel Removed Roadside (RS) Curbside (CS) 7, 8 1. Supply Air Temperature Sensor - SAT (RS and CS) 10. Evaporator Outlet Pressure Transducer - EVOP 2. Evaporator Fan and Motor Assembly (RS and CS) 11.
  • Page 26 Figure 2.4 Remote Evaporator, Single-Cover Removed 5, 6 Fan 2 Fan 1 1. Coil 6. Evaporator High Temperature Switch (HTA) 2. Heaters (RMT HTR1 and RMT HTR2) 7. Fan and Motor Assembly 3. Supply Air Temperature Sensor (RMT SAT) 8. Remote Control Box (option) 9.
  • Page 27 Figure 2.5 Remote Evaporator, Dual - Cover Removed 5, 6 Fan 2 Fan 1 1. Coil 8. Heater, RMT HTR2 2. Heater, RMT HTR1 9. Fan and Motor Assembly 3. Supply Air Temperature Sensor (RMT SAT) 10. Remote Control Box (option) 11.
  • Page 28 Figure 2.6 Power Module (PM) 1. K2 Diesel Engine Relay (DER) 10. Fuse (F7 = 20 amp), Fuel Heat 2. K1 Power Enable Relay (PER) 11. Fuse (F6 = 5 amp) 3. Buzzer Connection (BC) 12. Fuse (F5 = 5 amp) 4.
  • Page 29 Figure 2.7 Control Box 1. Fuse (F35) 13. Fuse (F41) 2. Fuse (F34) 14. Fuse (F40) 3. Fuse (F33) 15. Fuse (F39) 4. Fuse (F42) 16. Heat Contactor 1 (1HTCON1) 5. Fuse (F43) 17. Heat Contactor 2 (1HTCON2) 6. Fuse (F44) 18.
  • Page 30 Figure 2.8 Control Box 1. Generator Contactor (GENCON) 6. Power Supply Contactor 2 (PSCON2) 2. Compressor Contactor (CCON) 7. Overload Ground Fault (OGF) 3. AC Current Sensor (CT 2, 3, 4) 8. Phase Reversal Module (PRM) 4. Ground Plate (PE) 9.

  • Page 31: Condensing Section

    Figure 2.9 Electrical Component Identification 1. Power Module (PM) 3. Control Box Assembly 2. Main Stepper Module 1 (1MSM) 4. Main Stepper Module 2 (2MSM) Condensing Section The condensing section (see 2.2) consists of an engine-generator drive package, Figure 2.1 Figure compressor, condenser fans, condenser, radiator, economizer, refrigerant controls, defrost air switch, piping, wiring, and associated components.

  • Page 32: Engine Controls

    2.4.3 Engine Controls The ENSSN provides the control system with information on the speed at which the engine is running. The ENSSN is located in the gear case cov- Engine Speed Sensor (ENSSN) er above the engine oil filter. The RPS provides the control system with engine fuel rack (throttle) po- sition information to be used to control the engine and refrigeration sys- Rack Position Sensor (RPS) tem.

  • Page 33: Compressor Switches, Transducers And Sensors

    2.4.6 Compressor Switches, Transducers and Sensors The CDP provides a signal to the control system equivalent to pressure Compressor Discharge Pressure leaving the compressor. The reading is displayed, recorded in the Data- Transducer (CDP) Link data recorder and used to control the refrigeration system. It is locat- ed in the discharge line leaving the compressor.

  • Page 34: Evaporator Section, Compartment 1 And 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.5.1 Evaporator Coil

    2.4.10 Economizer Transducer and Sensor The ECOP is located in the vapor injection line leaving the economizer. Economizer Outlet Pressure It provides the control system with economizer outlet pressure informa- Transducer (ECOP) tion to be displayed, recorded in DataLink data, and used to determine the required position of the economizer expansion valve.

  • Page 35: Evaporator Switches, Transducers And Sensors

    2.5.3 Evaporator Switches, Transducers and Sensors The EVOP is located in the suction line near the evaporator expansion Evaporator Outlet Pressure Trans- valve. It provides the control system with evaporator outlet pressure in- ducer (EVOP) formation to be displayed, recorded in the DataLink data recorder and used to determine the required position of the evaporator expansion valve.

  • Page 36: Remote Evaporator

    Remote Evaporator The remote evaporator is mounted to the ceiling of compartment 3 (if equipped). The evaporator used is MJS (single discharge) or MJD (dual discharge). The MJD units has two coils. Each is fitted with an expansion valve. The evaporator assembly consists of the evaporator coil, evaporator fan motor, evaporator expansion valve(s), coil heaters, defrost termination temperature sensor, high temperature switch(es), 12 V drain line heater(s), control box, return air sensor and an optional supply air sensor.

  • Page 37: System Operating Controls And Components

    EVM2. System Operating Controls and Components Temperature control is provided by the Carrier Transicold APX™ Control System. Once the system is set at the desired temperature, the unit will operate automatically to maintain the desired temperature within very close limits.

  • Page 38: Special Features

    2.7.2 Special Features The following additional special features are incorporated into the Carrier Transicold APX control system: • An easy to read LCD display MessageCenter which clearly displays all required information • Unit Data and Advanced User selectable Functional Parameters •...
  • Page 39 2.7.3.1 Power Module (PM) The Power Module (PM) (see 2.6) is responsible for distribution of power from the battery to the Figure system components, when starting, and then from the battery charger to the system components and to the battery (for charging) once power is available. The module houses the system relays, low voltage fuses and the DC current transformer (CT1).
  • Page 40 2.7.3.9 Overload Ground Fault Module (OGF) The OGF, see 2.10, is located in the control box (Figure 2.8). The module has two Figure electrical safety features which are active in both Engine and Electric Operation: 1. Overload protection. For more information on the OGF, refer to Section 8.9.18.
  • Page 41 2.7.3.10 Display Module (DM) Display The APX Control System for multi-temp units will display one of two available options, Split Screen and Auto Scroll. Split Screen, shows each compartment Setpoint and Box Temperature in one view. Auto Scroll, which is similar to the standard APX Single Temp display, shows one compartment Setpoint and Box Temperature in each view;...

  • Page 42: Options

    Options 2.8.1 Light Bar The Light Bar is an external indicator light which can be seen in the driver’s rear view mirror from the cab of the tractor. The green LED indicates “STATUS OK”. The amber LED indicates “CHECK UNIT”. The amber light is illuminated when the APX Control System illuminates the alarm light.

  • Page 43: Remote Temperature Sensor

    2.8.3 Remote Temperature Sensor The unit is provisioned to connect remote temperature sensors (REMSN1, REMSN2 and REMSN3) through the REM connector to 1MSM. The system may be configured to display the sensor reading in the Unit Data and to record the sensor reading in the DataLink data recorder.

  • Page 44: Engine Data

    Engine Data Unit Specification Engine Model V2403-CR-E4 (26-00159-01) Rated Power 24.4 hp (18.2 KW) @1800 rpm Displacement 135 in (2.216 liters) No. Cylinders NOTE Refer to for engine speed settings Table 2–1 Coolant Capacity 16 U.S. gallons (5.86 liters) - 50/50 mix - never to exceed 60/40. Recommended to use Extended Life Coolant, Nitrite Free (ELC-NF), which is red in color and labeled for at least five years, 12,000 hours service life.

  • Page 45: Refrigeration System Data

    2.11 Refrigeration System Data Unit Specification Defrost Air Switch (DAS) Initiates Defrost: 1.40 +/- .07 inch (35 ± 1.8 mm) Defrost Timer 1.5h, 3h, 6h, or 12 hours Evaporator High Temperature Opens, on a temperature rise, at 130 +/- 5°F (55 ± 2.8°C) Switch, Includes Remote Closes, on a temperature fall, at 100 +/- 7°F (37.8 ±...
  • Page 46 Unit Specification Detail Compartment 1 or 2, Heater 1 Number of heaters Three elements (1 assembly) Resistance, cold (20°C) 196 ohms ± 10 ohms per phase Current, Low Speed 3.5 amps nominal Current, High Speed 4.7 amps nominal Compartment 1 or 2, Heater 2 Heaters Number of heaters Four elements (1 assembly)

  • Page 47: Component Resistance And Current Draw

    2.13 Component Resistance and Current Draw Component Ohms Amps Fuel Heater (FH) Standard 0.96 ohms ±10% 12.5 amps ± 10% Suction Side 1.3 ohms ±10% 10.7 amps ± 10% Fuel Heater Relay (FHR) and Power Enable 90 ohms between pins 85 and 86 Relay (PER) Fuel Pump (FP) 11.5 ohms ±...

  • Page 48: Refrigeration Circuit, Cooling

    2.15 Refrigeration Circuit, Cooling When cooling, the unit operates as a vapor compression refrigeration system. The main components of the system are: • Scroll compressor • Air-cooled condenser • Evaporator expansion valves • Direct expansion evaporators • Economizer circuit The refrigeration system will operate in one of three modes - Standard, Economized or Null. In addition, the system may also operate in Liquid Injection mode.

  • Page 49: Economized Mode

    2.15.2 Economized Mode In Economized mode the “main” refrigeration system operates the same as in the Standard mode except the control system operates (opens) the economizer expansion valve (ECXV). With the economizer expan- sion valve operating (see 2.14), the capacity of the unit is increased by subcooling the liquid refrig- Figure erant entering the evaporator expansion valve.
  • Page 50 Figure 2.13 Refrigeration Circuit Standard Mode EVOT/ EVXV EVOP Compartment 3 Evaporator 2MSM EVOT/ EVXV EVOP Compartment 2 Evaporator 1MSM EVOT/ EVXV EVOP Compartment 1 Evaporator Distributor Condensor Fusible Plug Subcooler Reciever Liquid Line Filter Drier Service Valve LIV N/C ECXV Compressor Discharge Service Valve...
  • Page 51 Figure 2.14 Refrigeration Circuit Economized Mode EVOT/ EVXV EVOP Compartment 3 Evaporator 2MSM EVOT/ EVXV EVOP Compartment 2 Evaporator 1MSM EVOT/ EVXV EVOP Compartment 1 Evaporator Distributor Condensor Fusible Plug Subcooler Reciever Liquid Line Filter Drier Service Valve LIV N/C ECXV Compressor Discharge Service Valve...
  • Page 52 2–31 62-12340...
  • Page 53 62-12340 2–32...

  • Page 54: Operation

    SECTION 3 Operation Display WARNING Unit may start automatically at any time even if the switch is in the OFF position. Use proper lockout/tagout procedures before inspection/servicing. All unit inspection/servicing by properly trained personnel only. Figure 3.1 Display Module 1. Display Screen 7.

  • Page 55: Display Screens

    Display Screens START/STOP DIESEL Split Screen -36. TEMP COOL COOL COOL SETPOINT C2 STATUS OK START/STOP DIESEL COOL Typical Menu Viewing Menu Soft Key Screen Selections Press Menu Key to Scroll INTELLISET PRETRIP HOUR UNIT METER DATA 1. Status Bar 2.

  • Page 56: Auto Scroll

    START/STOP DIESEL COOL Status Bar Setpoint .9 -10 Box Temperature BOX TEMP C1 STPT C1 MessageCenter Compartment STATUS OK (C1, C2, or C3) Auto Scroll There are two available display options, Split Screen (see previous page) and Auto Scroll (above). Split Screen shows each compartment Setpoint and Box Temperature in one view.

  • Page 57: Starting Unit

    The unit will automatically start in the operating state it was in (Engine or Electric) when stopped. 2. The system will display the Carrier Transicold logo, display the default screen, present language selection and the hour meter readings (if configured to do so) along with a test flash of the alarm light. The system will then perform a start sequence, energize the buzzer, and then start the unit automatically.

  • Page 58: Inspect Mode

    Inspect Mode Inspect mode provides an additional layer of safety for operators and technicians. Inspect mode should be used during all pretrip inspections of the unit. Inspect mode is a user activated feature that forces the unit to shutdown and remain in shutdown regardless of operating state.

  • Page 59: Switching Operating State

    Switching Operating State If DIESEL is displayed, the unit is in Engine Opera- DIESEL -36. TEMP COOL COOL SETPOINT WARNING Do not connect power plug to any electrical outlet without checking that it meets the 460/3/60 and 30 Amp electrical requirements of the unit. WARNING Ensure the power plug is clean and dry before connecting to any electrical outlet/receptacle.
  • Page 60 Engine to Electric 1. If the standby electric cable is not already in place, ensure the external power circuit breaker is OFF, and connect the cable to the unit receptacle. 2. Turn the external circuit breaker ON. 3. Press and release the “MENU” key until the “STANDBY” soft key is displayed. START/STOP DIESEL START/STOP...

  • Page 61: Intelliset

    NOTES • The above settings are examples of possible settings. Factory IntelliSets are available from your authorized Carrier Transicold Truck/Trailer dealer • IntelliSet may be pre-programmed as “IntelliSleep” which allows Sleep mode to be entered by simply changing to that IntelliSet.
  • Page 62 START/STOP DIESEL COOL Viewing Menu Soft Key Selections Press Menu Key to Scroll INTELLISET PRETRIP HOUR UNIT METER DATA 1. With the system powered up (START/RUN-OFF switch in the START/RUN position) or in PC mode and the default screen displayed, press the “=” key. If the screen shown just above step 3 below is displayed, pro- ceed to step 3.

  • Page 63: Pretrip

    Pretrip Pretrip is a set of tests run by the control system to check unit operation. It is recommended that a Pretrip is run prior to loading the refrigerated compartment. It will indicate a failure if one is detected. A Pretrip can be started at any box temperature. If Pretrip is started while the unit is in a Start-Stop off cycle the unit will start during the course of the test.
  • Page 64 3. If “Start Pretrip” is selected, Pretrip will begin and the Pretrip Status screen will be displayed. NOTE At any time during Pretrip, the UNIT DATA soft key may be pressed to allow the user to view the unit data screen (refer to Section 3.16).
  • Page 65 Test 2 - 12VDC Electrical Component Amperage Check - Test 2 will check the amperage (current) draw of the fol lowing components: Table 3–1 • Battery Amp Draw (All Components Turned Off) • Heater Contactor 1 Compartment 1 • Liquid Injection Valve •...
  • Page 66 Test 11 - Evaporator Expansion Valve (EVXV) - This test is an operational check of the EVXV. If evaporator out- let pressure doesn't change as expected with the EVXV closed then the P00177 Check EXV (EVXV) Superheat alarm will be displayed. Test 12 - Economizer Expansion Valve (ECXV) - This test is an operational check of the ECXV.

  • Page 67: Turning Compartments On/Off

    Turning Compartments On/Off DIESEL -36. TEMP COOL COOL SETPOINT Compartment 1 Compartment 2 Compartment 3 Temp -9.9° Temp 28.1 Temp -36.2 Cool Mode Cool Mode Cool Mode Setpoint -10 Setpoint 35 Setpoint 36 DIESEL -36. TEMP COOL COOL SETPOINT Individual compartment control status and temperature display boxes are configured in the trailer as follows: •...

  • Page 68: Changing Setpoint

    Changing Setpoint DIESEL -36. TEMP COOL COOL SETPOINT Compartment 1 Compartment 2 Compartment 3 Temp NA Temp 28.1 Temp 36.2 Cool Mode Cool Mode Setpoint -10 Setpoint 28 Setpoint 36 1. With the system powered up (START/RUN-OFF switch in the START/RUN position) and the default screen displayed (press the BACK or EXIT soft key if required), and the correct compartment highlighted 2.

  • Page 69: Start-Stop Operation

    3.10 Start-Stop Operation DIESEL -36. TEMP COOL COOL SETPOINT 1. With the system powered up (START/RUN-OFF switch in the START/RUN position) or in PC mode press the START-STOP/CONTINUOUS key until “START/STOP” is highlighted. 2. The message “START/STOP MODE SELECTED” will be displayed in the MessageCenter for 10 seconds. 3.

  • Page 70: Continuous Operation

    3.11 Continuous Operation DIESEL -36. TEMP COOL COOL SETPOINT 1. With the system powered up (START/RUN-OFF switch in the START/RUN position) or in PC mode press the START-STOP/CONTINUOUS key until “CONTINUOUS” is displayed and highlighted. 2. The message “CONTINUOUS RUN MODE SELECTED” will be displayed in the MessageCenter for 10 sec- onds.

  • Page 71: Data Recorder

    3.12 Data Recorder The APX Control System contains a built-in DataLink data recorder with 3 megabytes of memory. The recorded data can be downloaded from the DataLink data recorder using either the TRU-Tech/TRU-View program or a Data Transfer USB memory device. The DataLink data recorder reads the same input information as the control system (Functional Parameters, Con- figurations, and Unit Data) at all times.

  • Page 72: Data Downloading

    Event Occurrences This information is any additional data that is recorded on a “when it occurs” basis. Events are recorded by the recorder as they occur. An Event is defined as something that happens and may include: • Setpoint change •...
  • Page 73 2. Press the DATA RECORDER soft key to display the sub menus. DATA RECORDER MARK TRIP START PRINT TO SCREEN PRINT TO PRINTER SCREEN SETUP PRINTER SETUP BACK EXIT 3. The Data Recorder screen will display with a 15-second timeout. Press the ▲ or ▼ key to scroll through the available sub menus.

  • Page 74: Manual Defrost

    3.13 Manual Defrost START/STOP DIESEL DEFROST DEFROST SETPOINT DEFROST CYCLE STARTED 1. With the system powered up (START/RUN-OFF switch in the START/RUN position) and the default screen displayed (press the BACK or EXIT soft key if required), press the MANUAL DEFROST key. NOTE This procedure may be demonstrated in PC mode but the unit will not actually enter defrost.

  • Page 75: Language Selection

    3.14 Language Selection START/STOP DIESEL COOL Viewing Menu Soft Key Selections Press Menu Key to Scroll LANGUAGE DATA EXIT VIEW RECORDER NOTE Language Selection may not be available on early software revisions. 1. With the system powered up (START/RUN-OFF switch in the START/RUN position) or in PC mode press the MENU key until LANGUAGE is displayed.

  • Page 76: Advanced User

    3.15 Advanced User DIESEL -36. TEMP COOL COOL SETPOINT NOTES • As shipped from the factory, the system will operate in the Driver mode. In the Driver mode, some data and menu items covered in this publication will not be available. •...

  • Page 77: Unit Data

    3.16 Unit Data START/STOP DIESEL COOL Viewing Menu Soft Key Selections Press Menu Key to Scroll INTELLISET PRETRIP HOUR UNIT METER DATA 1. With the system powered up (START/RUN-OFF switch in the START/RUN position) or in PC mode, press the MENU key until UNIT DATA is displayed. 2.
  • Page 78 3.16 UNIT DATA - Continued UNIT DATA LIST ENGINE REMOTE SENSORS (Optional) SYSTEM INFORMATION* Fuel level Remote Sensor 1 Date* Battery: O.K. Remote Sensor 2 Time* Amp Draw (DC) Remote Sensor 3 Trailer/Asset/Car ID* Engine Coolant Temperature Unit Serial #* Unit AC Current #1 C1/C2REFRFRIGERATION SYSTEM Unit Model #*...

  • Page 79: Discharge Pressure

    Table 3–2 Unit Data DATA DEFINITION REFRIGERATION SYSTEM DISCHARGE PRESSURE Refrigerant pressure leaving the compressor COMPRESSOR DISCHARGE TEMP Refrigerant temperature leaving the compressor SUCTION PRESSURE Refrigerant pressure entering the compressor SUCTION LINE TEMP Refrigerant temperature entering the compressor EVAPORATOR PRESSURE C1/C2/ Refrigerant pressure leaving the evaporator EVAPORATOR OUTLET TEMP Refrigerant temperature leaving the evaporator...

  • Page 80: View Active Alarms

    3.17 View Active Alarms 1. With the system powered up (START/RUN-OFF switch in the START/RUN position) or in PC mode press the ALARM key. 2. If there are active alarms, the alarm number will be displayed preceded by the letter “A” (active alarm). The last alarm that occurred will be the first alarm displayed.

  • Page 81: View Hour Meters

    3.18 View Hour Meters START/STOP DIESEL COOL Viewing Menu Soft Key Selections Press Menu Key to Scroll INTELLISET PRETRIP HOUR UNIT METER DATA 1. With the system powered up (START/RUN-OFF switch in the START/RUN position) or in PC mode, press the MENU key until HOUR METERS is displayed.

  • Page 82: Functional Parameters

    3.19 Functional Parameters START/STOP DIESEL COOL Viewing Menu Soft Key Selections Press Menu Key to Scroll LANGUAGE DATA FUNCTIONS EXIT RECORDER 1. With the system powered up (START/RUN-OFF switch in the START/RUN position) or in PC mode, and in the Advanced User mode, press the MENU key until FUNCTIONS is displayed. 2.

  • Page 83: Temperature Settings

    Table 3–3 Functional Parameters FUNCTION PARAMETER SELECTIONS DESCRIPTION SPEED DELAY 0 MINS TO 255MINS Select the length of time the unit is to remain in low CONT: speed after starting, before transitioning to high (in one minute increments) speed, when in Continuous Operation. 0 MIN TEMPERATURE SETTINGS DEFROST...
  • Page 84 Table 3–3 Functional Parameters FUNCTION PARAMETER SELECTIONS DESCRIPTION START-STOP SETTINGS Time and Temperature values that control Start-Stop Operation are set in this section. The system may be config- ured so that: 1. the same settings apply to any setpoint = “Together” or 2.
  • Page 85 Table 3–3 Functional Parameters FUNCTION PARAMETER SELECTIONS DESCRIPTION OVERRIDES OVERRIDE DOOR If the switches are all configured “Switch Not In- SWITCH SHUTDOWN (DS) stalled”, this parameter will not display. NO = the system will respond to the switch as con- figured.

  • Page 86: Sleep Mode

    3.20 Sleep Mode START/STOP DIESEL COOL Viewing Menu Soft Key Selections Press Menu Key to Scroll LANGUAGE DATA FUNCTIONS EXIT RECORDER 1. With the system powered up (START/RUN-OFF switch in the START/RUN position) or in PC mode, and in the Advanced User mode, press the MENU key until FUNCTIONS is displayed. 2.
  • Page 87 Additional Sub-Menus: 1. “WAKE UP TIME” may be set to ON or OFF, the default setting is OFF. a. When “WAKE UP TIME” is set to OFF the unit will remain in Sleep mode until it is taken out manually (refer to the preceding “TO EXIT SLEEP MODE”...

  • Page 88: Stopping The Unit

    3.21 Stopping the Unit START/STOP DIESEL COOL .3 34 BOX TEMPERATURE SETPOINT STATUS OK SROS To stop the unit, place the START/RUN-OFF switch in the OFF position. The unit will shutdown immediately while the system completes a shutdown sequence and then the LCD display will go blank. The engine will stop and the display will turn off.

  • Page 89: Option - Datatrak

    Carrier Transicold has worked with approved communication providers with recommended installation locations, and wiring connections to Carrier units. Instructions for installing this equipment is supplied by each individual provider, and not by Carrier Transicold. Communications electrical harnesses are available from Carrier Transicold Perfor- mance Parts Group (PPG).

  • Page 90: Emergency Bypass Mode

    Enter Emergency Bypass Mode: 1. When the unit is in a shutdown state due to the display module alarm, press the MENU key until BYPASS MODE is displayed. 2. Press the BYPASS MODE soft key, the unit will resume operation until Emergency Bypass mode is disabled, or after 24 hours of unit operation in Emergency Bypass mode.
  • Page 91 The Remote Panel can be used to: • Turn the unit On/Off • Check compartment temperatures • Check and change setpoints • Initiate manual defrost • Check mode of operation • Initiate Pre-trip The Remote Panel cannot be used to: •...

  • Page 92: Engine And Temperature Control

    SECTION 4 Engine and Temperature Control NOTES 1. If the unit is in an alarm condition, the control system alarm response may override the operation described herein. If an alarm is displayed in the MessageCenter, refer to the specific alarm description in Section 7 Unit Control descriptions.

  • Page 93: Engine/Electric Operation

    Display module “LO” CAN 2 (CAN2L) connectivity is established from the first MSM (at 1-1MSM-8) to the display module at DM-6 (through SP-01, with TERM 2 connected to SP-01). Remote and second MSM “LO” CAN 2 (CAN2L) connectivity is established from the CCB (at CCB-28), to the main control board’s CAN1L in the second MSM (at terminal 2-1MSM-3) and to the stepper board in the second MSM (from 2-1MSM-6 to 2-2MSM-30).

  • Page 94: Soft Start (Bump Start)

    4.3.1 Soft Start (Bump Start) On command to start the compressor, the control system will determine if there is a need to perform a Soft Start. Soft Start is performed to clear refrigerant from the compressor and/or return oil; Soft Start will be activated if: •...
  • Page 95 Figure 4.1 Auto Start Sequence ENGINE 0 - 180 Seconds RUNNING following start (preheat) CRANK 3 to 10 (with preheat) Seconds SECOND 5 SEC. BUZZER THIRD 0 to 30 ATTEMPTS Seconds PREHEAT (If required) 15 Seconds STOP ENGINE 0 - 180 RUNNING Seconds following start...

  • Page 96: Engine Start-Up Sequence

    4.4.1 Engine Start-Up Sequence On command to perform a Start-up the main microprocessor will supply power from 3MM-10 to the fuel pump (FP) and from 3MM-9 to ENCU-44. This signals the ENCU that engine operation is required. The control system will then enter the engine start sequence. During the start sequence the engine is operated in low speed.

  • Page 97: Transition To High Speed

    4.4.2 Transition to High Speed After a successful start, the control system may call for the engine to transition to high speed. When high speed is required, the main microprocessor will provide a signal through the CAN system to the ENCU, calling for the speed change.

  • Page 98: Stop Parameters

    If SEPARATE is selected, then the following Functional Parameter values will be available for use: • PERISHABLE MINIMUM RUN TIME • PERISHABLE MINIMUM OFF TIME • PERISHABLE RESTART TEMPERATURE • PERISHABLE OVERRIDE TEMP • PERISHABLE MAXIMUM OFF TIME • FROZEN MINIMUM RUN TIME •...
  • Page 99 The status of the unit battery can be checked by reading the Battery Voltage in the Data List. If “OK.” appears after the voltage reading, battery voltage is sufficient to allow the unit to cycle off. If only one compartment is operating, and it is not in Pulldown or Pull-Up, that compartment will remain in operation with the compressor and heaters off.

  • Page 100: Re-Start Parameters

    4.5.3 Re-Start Parameters While the unit is in a Start-Stop OFF Cycle, restart will be initiated when one of the following conditions occurs: NOTE In Start-Stop Operation, when the setpoint is in the frozen range (refer to Section 4.7.1), the unit will not restart when temperature is below setpoint except as indicated in the following.

  • Page 101: Continuous Operation

    4.5.3.5 Compartment temperature has exceeded the Override Functional Parameter value During MINIMUM OFF TIME the control system continually monitors the refrigerated compartment tem- peratures and the override functional parameter value. During the Minimum Off Time, if the one of the refrigerated compartment temperatures drifts this far above or below setpoint in the Perishable Range, or above setpoint in the Frozen Range, the unit will override the Minimum Off Time, and restart.

  • Page 102: Cool/Heat/Null Mode Switching Logic

    4.7.4 Cool/Heat/Null mode Switching Logic When not in Pulldown and in Continuous Run mode, operation in cool, heat and null modes is determined in accordance with the calculated Controlling Temperature value (CT), the difference between this value and Setpoint (SP) and the FUEL SAVER (ECO) MODE Functional Parameter setting in accordance with the following table: Control Temperature with Fuel Saver OFF Cool Mode...
  • Page 103 4.7.5 Cool Mode When Cool mode is required the system will operate in Pulldown or CSMV Control. Pulldown operation will include periods of time in Economized mode and Standard mode. CSMV control will occur in Standard mode. For descriptions of operation when cooling, with flow diagrams, refer to Section 2.15.
  • Page 104 4.7.6 Heat Mode When Heat mode is required the system will operate with the evaporator fans energized. Operation of the heaters is determined in accordance with the calculated Controlling Temperature value (CT) and the differ- ence between this value and Setpoint (SP) in accordance with the following table: Control Temperature with Fuel Saver OFF HTCON1 Switch On when CT-SP is...

  • Page 105: Defrost

    Defrost Defrost is an independent cycle that overrides cooling and heating functions in order to de-ice the evaporator(s). When the unit enters defrost the MessageCenter will display DEFROST CYCLE STARTED for the first 10 seconds and then display the default message for the remainder of the cycle. DEFROST is displayed in the Operator Mes- sage Panel, along with the setpoint while the unit is in the defrost cycle.

  • Page 106: Defrost Modes

    4.8.2 Defrost Modes There are two Defrost modes available: NOTE When the unit is in Defrost mode and in engine operation: • The condenser fan will operate to supply air for the radiator • The engine will operate in low speed •...

  • Page 107: Priority Cooling

    4.9.1 Priority Cooling • Priority cooling applies when the unit is operating with more than one compartment enabled and if one compartment has a frozen setpoint and the other(s) a perishable setpoint (refer to Section 4.7.1). In pri- ority cooling, priority is assigned to the compartment with a frozen setpoint or the compartment with a perishable setpoint in accordance with four configuration settings.
  • Page 108 NOTE These values are all negative (except for 0), therefore, when the value is added to the setpoint, the result will be a temperature that is less than the setpoint. • When the Perish Sensitive Product Functional Parameter is set to OFF, the supply air temperature for either or both compartments will be the coldest temperature of 32°F (0°C) OR the calculated value of set- point minus the configured Supply Air Limit value.

  • Page 109: Temperature Range Lock 1 And 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Productshield

    4.9.3 Temperature Range Lock 1 and 2 Range Lock is a group of configurations which may be set to lock the unit into Start-Stop or Continuous Operation for various setpoint ranges. NOTE Range Lock is applicable to Compartment 1 only. When Compartment 1 is operating under Range Lock, all compartments will operate in Start/Stop Operation or Continuous Operation according to the setting for Compartment 1.
  • Page 110 Figure 4.3 Range Lock Settings - Overlapping Range 1 always has priority when Range overlap Range 1 is set for 32 to 42 F Range 2 is set for -22 to (0 to 5.6 C) 89.6 F (-30 to 32 C) Set for Continuous Set for Start-Stop Range 2...
  • Page 111 Continuous Operation when the return air temperature is more than the configured perishable restart tem- perature away from setpoint in the perishable range, or the configured frozen restart temperature above setpoint in the frozen range. When the unit restarts, it will return to Continuous Operation for a minimum of 15 minutes or the Minimum Run Time Functional Parameter setting, whichever time is longer.
  • Page 112 4.9.4.6 ProductShield High Air ProductShield High Air allows the microprocessor to automatically switch the engine from normal to forced high speed, and thereby provide high evaporator air flow. This allows maximum product protection when certain conditions are met while providing for power savings when High Air is not required. Operation in High Air is controlled by four configurations;...

  • Page 113: Preprogrammed Software Overrides

    Once the microprocessor detects that the ambient temperature has dropped below the pre-programmed temperature, the unit will switch into ProductShield Winter which will force the unit to operate in Continuous operation. The unit will continue to operate in Continuous operation for a minimum of 30 minutes. After 30 minutes, the unit will return to auto Start/Stop if the ambient temperature has risen above the pre-pro- grammed ProductShield Winter temperature.

  • Page 114: Csmv Control Overrides

    9. Frozen Setpoint Override: If the setpoint is in the frozen range and the temperature is below setpoint, the engine will operate in low speed. 10. Low Suction Pressure Override: If suction pressure is below -4 psig (-.27 bar) for > 20 seconds, inhibit high speed operation.
  • Page 115 62-12340 4–24...

  • Page 116: Control Systems Interface

    SECTION 5 Control Systems Interface Interface Methods There are four methods for interfacing with the APX Control System: Driver/Advanced User Interface Activities such as start, stop, Pretrip, reading alarms, reading data and changing Functional Parameters may all be performed using the display mounted keys (refer to Section 3).
  • Page 117 2. Press the TECH MODE key. Enter the master technician PIN code. The factory installed master technician PIN code is 7435. Enter this code by pressing the 3 and 4 keys simultaneously, then pressing the 4 key, then the 3 key, then the 1 and 4 keys simultaneously.

  • Page 118: Inactive Alarms

    2. Press the HOUR METER soft key to display the hour meter screen. HOUR METERS (1 OF 4) STANDARD HOUR METERS This line will only display if OTHER METERS AND COUNTERS one or more hour meters MAINTENANCE HOUR METERS has timed out and is ready RESET HOUR METERS to be reset.
  • Page 119 Figure 5.3 Inactive Alarms ACTIVE ALARMS NO ACTIVE ALARMS BACK CLEAR INACTIVE ALARMS ALARMS INACTIVE ALARMS I00093 CHECK START-UP BUZZER P00144 CHECK UL1 CIRCUIT P00141 PRETRIP STOPPED BY USER CLEAR CLEAR BACK EXIT INACTIVE 1. Enter the Technician mode, as described in Figure 5.1, then press the ALARM key.

  • Page 120: Configuration Settings

    5.2.3 Configuration Settings Configuration settings match the APX Control System to the unit and define APX Control System action under var- ious operational conditions. Instructions for working with Configurations are provided in Figure 5.4. 1. Enter the Technicians Menu, highlight CONFIGURATION SETTINGS and then press the “=” key as described Figure 5.1.
  • Page 121 11. To change a value selection screen, press the “=” key with the desired Configuration sub-menu highlighted as in Sample Screen A. The individual Configurations within the sub-menu will display as in Sample Screen B. Press the ▲ or ▼ key to scroll through the individual Configurations. The individual Configurations will highlight as the list is scrolled.
  • Page 122 5.2.4 Component Test Mode Component Test mode allows the technician to energize individual circuits for five minutes at a time. The unit is not allowed to start when the System is in Component Test mode. Instructions for entering the Component Test mode are provided in Figure 5.5.

  • Page 123: Service Mode

    4. When a component is energized in Component Test mode, the AMP DRAW display initially shows the current draw of the system, after a few seconds the display will change to reflect the current draw of the system plus the added component.

  • Page 124: Usb Memory Devices

    Instructions for using USB memory devices with the APX APX Control System are provided in the following sub- paragraphs. 5.3.1 Data Transfer USB Memory Device Carrier Transicold APX USB Flash Drive, CTD P/N 12-00734-00 must be used: • The device may be used to enter PC mode. •...

  • Page 125: Pc Mode

    1. With the START/RUN - OFF switch in the OFF position, remove protective cover from the USB interface port and insert a Data Transfer USB. The USB activity LED will flash, the Carrier Transicold logo will display and then the MessageCenter will display one or more USB soft key descriptions.

  • Page 126: Downloading Data Files

    2. Press the “PC MODE’ soft key. DO NOT remove USB or cable at this time. 3. The MessageCenter will display “PC MODE”. The System is now in PC mode. The purpose of PC mode is to allow demonstration of the System features and allow changes to the System while the unit is not actually run- ning.

  • Page 127: Installing Software

    2. The Message Center will then display the USB soft keys. ( The INSTALL SOFTWARE and INSTALL SETTINGS soft keys will not display if the applicable files are not loaded on the Data transfer USB memory device.) DATA EXTRACTION (1 OF 4) START/STOP DIESEL EXTRACT: All Data...
  • Page 128 Whenever installing new software, it is always a good idea to start the unit and give it a quick check over prior to performing the operation. All units should have the software upgraded to the latest ver- sion, provided for Carrier Transicold dealers on the TransCentral web site. Figure 5.8 Installing Software...
  • Page 129 NOTE If Configured to do so, the System will prompt for entry of the data protect PIN code (refer to “PRO- TECT DATA WITH PIN”, Table 5–1). 3. In less than two minutes time, the MessageCenter will display the USB soft keys. (The INSTALL SETTINGS soft key will not display if files are not loaded in the CONFIG folder and DOWNLOAD DATA does not display if the DOWNLOAD folder is not present).

  • Page 130: Transferring Configuration Files

    5.3.5 Transferring Configuration Files Instructions for installing configuration files into the APX Control System from a Data Transfer USB memory device are provided below. Configuration (*.set) files consist of one of the following types of files. A “Configuration” file contains a complete set of Configuration, Functional Parameter and Data Recorder settings for the system. An “IntelliSet”...

  • Page 131: Tru-Tech And Tru-View

    TRU-Tech and TRU-View The TRU-Tech and TRU-View program allows the user to access and download data using a computer, when the unit is not running and without starting the eight-hour DataLink data recorder timer. The application interface will provide additional programming and configuring capabilities that will not be available using the display mounted keys.
  • Page 132 CURRENT SOFTWARE VERSION: ##.##.01 SOFTW ARE ON USB: ##.##.02 PRESS = TO LOAD, OTHER TO EXIT PC–USB Service Cable. Carrier Transicold Part number: 22–04253–01 = 20 foot/6.1 meter long) 22–04253–00 = 6 foot/1.8 meter long) NOTE: An “off the shelf” USB to USB cable will not provide the required communication.

  • Page 133: Main Stepper Module (Msm) Replacement And Setup

    When field diagnosis of a Carrier Transicold refrigeration unit determines that an APX MSM is not performing properly and must be replaced the replacement microprocessor must be setup for this unit and customer by entering the required Configurations, Functional Parameters and DataLink data recorder settings.

  • Page 134: Pre-Replacement Steps

    5.5.1 Pre-Replacement Steps Before the unit can be started using the replacement MSM certain unit specific and time sensitive data must be known. Print this page and fill out the following for use when entering the data. That information includes: •...
  • Page 135 3. Power up the system by placing the START/RUN - OFF switch in the START/RUN position. The display will immediately go into the Unit Identification Configuration screen. The unit model information must be entered before the System can display the correct screens for this unit. 4.

  • Page 136: Configurations Via Display Mounted Keys

    NOTES 1. If a Data Transfer USB memory device will be used to setup the remainder of the MSM settings, proceed to Section 5.5.6 after the settings are entered. 2. After the unit specific and time sensitive configuration settings are complete use the ▲ or ▼ key until “CON- FIGS COMPLETE, = TO EXIT”...
  • Page 137 Table 5–1 Configuration Settings Configuration Selections Description Configuration Settings Press the ▲ or ▼ keys to display configurations: UNIT IDENTIFICATION CONFIGURATION SETTINGS (1 OF 11) SETPOINT(S) and RANGE LOCK UN IT IDENTIFICATION START-STOP SETTINGS SETPOINT(S) AND RANGE LOCK INTELLISET and PRODUCT SHIELD ENGINE ALARMS START-STOP SETTINGS ALARM SETTINGS...
  • Page 138 Table 5–1 Configuration Settings (Continued) Configuration Selections Description Setpoint (s) and Range Lock DECIMAL DISPLAYED DISPLAYED = setpoint will be shown with a decimal and temperatures may be selected to a tenth of a degree. NOT DISPLAYED NOT DISPLAYED = setpoint will not be shown with a decimal.
  • Page 139 Table 5–1 Configuration Settings (Continued) Configuration Selections Description S/S PARAMETERS TOGETHER TOGETHER = When the Minimum Run Time, Minimum Off Time, Restart Temperature, Maximum Off Time, and SEPARATE Override Temperatures are set in the Functional Param- eter List, the same values will be used for both Frozen and Perishable setpoints.
  • Page 140 Table 5–1 Configuration Settings (Continued) Configuration Selections Description PRODUCTSHIELD: OFF = ProductShield Econo is OFF ECONO GO TO S/S GO TO START/STOP = Allows unit to be set for and op- erate in Continuous Run until ambient temperature falls GO TO CONT within a user-defined range when unit will go to START/ STOP.
  • Page 141 Table 5–1 Configuration Settings (Continued) Configuration Selections Description HIGH AIR MAX. TEMP OFF = There is no upper limit for this parameter. -19°F to +119°F Select the upper limit of the ambient range desired for (-28.3°C - +48.3°C) this parameter. Refer to Section 4.9.4 for more informa- in 0.5°F - °C increments...
  • Page 142 Table 5–1 Configuration Settings (Continued) Configuration Selections Description FUEL HEATER NOT INSTALLED NOT INSTALLED = A Fuel Heater is not installed. INSTALLED INSTALLED = A Fuel Heater is installed. MAX THROTTLE 80% - 125% IF THIS CONFIGURATION IS AVAILABLE, USE FAC- POSITION TORY DEFAULT ONLY, DO NOT OPERATE WITH A 95% default...
  • Page 143 Table 5–1 Configuration Settings (Continued) Configuration Selections Description COMPRESSOR ALARM YES / NO If the “Compressor Alarm Shutdown” option has been in- stalled (refer to Unit Data), this setting will be available. SHUTDOWN YES = The unit will shutdown and not restart when alarm 00013 High Discharge Pressure, 00017 High Com-...

  • Page 144: Door Switch

    Table 5–1 Configuration Settings (Continued) Configuration Selections Description (METER NUMBER) OFF = This selection will turn this meter OFF (will not dis- CONFIGS play). ENGINE HOURS Meters available are PM-1 ENGINE HOURS = this meter will count the engine SWITCH ON HOURS thorough PM-5.
  • Page 145 Table 5–1 Configuration Settings (Continued) Configuration Selections Description DOOR SWITCH ALARM ONLY ALARM ONLY = When Door switch indicates that the SHUTDOWN door is open, a warning alarm will be displayed in the UNIT SHUTDOWN MessageCenter. LOW ENGINE SPEED UNIT SHUTDOWN = When Door switch indicates that DATA the door is open, a warning alarm will be displayed in the RECORDER ONLY...
  • Page 146 Table 5–1 Configuration Settings (Continued) Configuration Selections Description REMOTE SWITCH SHUT- ALARM ONLY ALARM ONLY = When the switch is activated, a warning DOWN 1, 2, 3, or 4 alarm will be displayed in the Message- Center. UNIT SHUTDOWN UNIT SHUTDOWN = When the switch is activated, a LOW ENGINE SPEED warning alarm will be displayed in the Message- Center, DATA...
  • Page 147 Table 5–1 Configuration Settings (Continued) Configuration Selections Description LIGHT BAR NOT INSTALLED NOT INSTALLED = a remote light bar is not installed 2 light = a two light bar is installed. 2 LIGHT NATURAL DEFROST YES / NO YES = Natural defrost will be allowed NO = Natural defrost will not be allowed Refer to Section 4.8 for more information on natural defrost) BATT CHARGER...
  • Page 148 Table 5–1 Configuration Settings (Continued) Configuration Selections Description HIGH SPEED PULLDOWN YES / NO When active, this logic indicates if temperature limits reg- ulating the exit of pulldown mode are modified or not. YES = Unit will continue in High Speed until it reaches setpoint.
  • Page 149 Table 5–1 Configuration Settings (Continued) Configuration Selections Description Rail Settings UNIT OPERATION STANDARD RAIL = The system is set to control Rail refrigeration op- eration. When this Configuration is set to “RAIL” the fol- RAIL lowing “VEHICLE ID”, “RAIL SHUTDOWN OVERRIDE” and “RAIL OVERRIDE RESTARTS”...

  • Page 150: Messagecenter Messages

    SECTION 6 MessageCenter Messages MessageCenter Messages The following table lists common messages which do not appear in other lists in this manual and a description of their meaning. Refer to Section 9 for a list of Alarm messages. Refer to Section 3.16 for a list of Unit Data mes- sages.
  • Page 151 Table 6–1 MessageCenter Messages Message Description DOOR OPEN A refrigerated compartment door is open. DOOR OPEN - LOW SPEED A refrigerated compartment door is open forcing the unit to run in low speed. EES SERVICE REQUIRED The EES requires service. ENTERING SERVICE MODE The initial message for Service mode.
  • Page 152 Table 6–1 MessageCenter Messages Message Description PRESTRIP STOPPED BY USER Pretrip has been stopped by user. PRODUCTSHIELD: ECONO ON The unit is operating in ProductShield Econo which overrides normal unit Start-Stop or Continuous Run operation. Refer to Section 4.9.4. PRODUCTSHIELD: HIGH AIR ON The unit is operating in ProductShield High Air which overrides normal unit speed operation.
  • Page 153 Table 6–1 MessageCenter Messages Message Description TECHNICIAN RESET REQUIRED Alarm AL00011 or AL00012 has been activated three times in the last (AL00021) two hours and the unit has been locked out. Refer to Section 7 for fur- ther information. TIME SELECTION NOT CHANGED A time change was started but not entered (saved) in Configuration List.

  • Page 154: Alarm Troubleshooting

    SECTION 7 Alarm Troubleshooting WARNING APX Control System equipped units may start automatically at any time the START/ RUN-OFF switch is in the START/RUN position. Also, the unit may be fitted with two-way communication equipment that will allow starting of the unit from a remote location even though the switch is in the OFF position.

  • Page 155: Notes

    • In high or low ambient it may be necessary to ing that the compartment is not loaded with cool or warm the refrigerated compartment tem- temperature sensitive product. perature before performing specific tests provid- WARNING The alarm related troubleshooting procedures in this section are to be performed by properly trained personnel only.

  • Page 156: Alarms

    Alarms 00001 Low Fuel Level Warning NOTE This is an optional alarm which will only occur when a fuel level sensor is present and configured “YES”. • ACTIVATION: The ENCU circuit is energized and fuel level is 15% or less for more than 30 seconds. •...
  • Page 157 00012 High Coolant Temperature • ACTIVATION: Condition 1: Ambient temperature is below 120°F (48.9°C) and engine coolant temperature is above 230°F (110°C). Condition 2: Ambient temperature is above 120°F (48.9°C) and, engine coolant temp is above 241°F (116°C). Condition 3: Ambient temperature is below 120°F (48.9°C) and the engine coolant temperature has remained between 230 and 241°F (110 and 116°C) for more than five minutes.
  • Page 158 00012 High Coolant Temperature (continued) 6. Check Engine Coolant Temperature Sensor Wiring a. Inspect harness and control box connector pins and terminals. (See wiring schematic Section 10.3). Verify no physical damage to harness and no damage or corrosion in connectors. b.
  • Page 159 00013 High Discharge Pressure • ACTIVATION: Compressor discharge pressure switch (HPS) contacts are open. HPS contacts open when the discharge pressure rises. Refer to Section 2.10. • UNIT CONTROL: Engine Operation: Engine and unit shutdown and alarm. Electric Operation: Refrigeration system shutdown and alarm with PSCON still ener- gized.

  • Page 160: Check Wiring

    00014 High A/C Amps • ACTIVATION: AC Current Sensor 1, 2, or 3 is greater than 28.5A for three seconds. • UNIT CONTROL: Engine Operation: Engine and unit shutdown and alarm. Electric Operation: Refrigeration system shutdown and alarm with PSCON still energized.
  • Page 161 00015 Battery Voltage Too High • ACTIVATION: Voltage at the main microprocessor is greater than 17 VDC. • UNIT CONTROL: Engine Operation: Engine and unit shutdown and alarm. Electric Operation: Refrigeration system shutdown and alarm with PSCON still energized. • RESET CONDITION: Auto reset after 15 minutes when the voltage at the main microprocessor is between 11 and 14 VDC, or alarm may be manually reset using the display mounted keys or by turning the unit off, then back on again.
  • Page 162 00016 Battery Voltage Too Low • ACTIVATION: Voltage at the main microprocessor is less than 10 VDC (except when the engine starter is engaged). • UNIT CONTROL: Engine and Electric Operation: Shutdown and alarm. Alarm only if activated while start- ing unit.
  • Page 163 00017 High Compressor Discharge Temp • ACTIVATION: “Check Compressor Discharge Sensor” alarm not active (if alarm is active, refer to 00125 Check Compressor Discharge Sensor first) and: discharge temp rises above 285.1°F (140.6°C) for 30 seconds, or discharge temp rises above 295.0°F (146.1°C). •...
  • Page 164 00018 Low Refrigerant Pressure • ACTIVATION: Suction pressure has been less than -6.3 psig (-0.43 bar) for the Low Suction Pressure Configuration time or 10 seconds (whichever is less). • UNIT CONTROL: Engine Operation: Engine and unit shutdown and alarm. Electric Operation: Alarm only or (if configured for shutdown) refrigeration system shutdown and alarm with PSCON still energized.
  • Page 165 00019 Low Fuel Shutdown NOTE This is an optional alarm. This alarm will only occur if the Fuel Level Sensor Configuration is YES. • ACTIVATION: The fuel level is 10% or less for more than 60 seconds AND Alarm 000126 - “Check Fuel Sensor Circuit”...
  • Page 166 00021 Technician Reset Required • ACTIVATION: The High Engine Temp Shutdown Configuration and/or Engine Oil Pressure Shutdown Configuration is/are set to YES, and either Alarm 00011 - Low Engine Oil Pressure, or Alarm 00012 - High Coolant Temperature has become active and shut the unit down three times within the past two hours.
  • Page 167 00022 Low Suction Superheat • ACTIVATION: “Check Suction Temperature Sensor” and/or “Check Evaporator Temperature Sensor” alarms are not active (refer to Alarm 000127 and/or 000131 first) and: Compressor suction superheat (Compressor Suction Temperature (CST) minus saturated tempera- ture for Compressor Suction Pressure (CSP) is less than 8°F (4.4°C) for more than 3-4 minutes. •...
  • Page 168 00023 A/C Current Over Limit • ACTIVATION: The high voltage amp draw is over the limit shown in the following table for more than 10 sec- onds. CONDITION DRAW Engine High / Low Speed, Standby Cool or Pretrip / Engine Off Any two compartments or three compartments enabled: Engine Off Engine High Speed Heat Engine Low Speed or Standby Heat...
  • Page 169 00023 A/C Current Over Limit (continued) WARNING Caution and good electrical practices must be used when working around and with high volt- age circuits. Verify that all three actual amperage readings for each component are within 10% of each other, and are within the values shown in Section 2.11.
  • Page 170 00024 Compression Ratio Exceeded • ACTIVATION: If the compressor compression ratio is greater than 21 for 20 seconds. • UNIT CONTROL: Engine Operation: Engine and unit shutdown and alarm. Electric Operation: Refrigeration system shutdown and alarm with PSCON still ener- gized.
  • Page 171 00027 High Suction Pressure • ACTIVATION: The refrigeration system is running and the suction pressure has been greater than 98 psig (6.7 bar) for more than 10 minutes. • UNIT CONTROL: Engine Operation: Alarm only or (if configured for shutdown) engine and unit shutdown and alarm.
  • Page 172 00028 Check Refrigeration System • ACTIVATION: The refrigeration system is running and the discharge pressure is less than 5 psig (0.34 bar) higher than suction pressure for more than 30 seconds. • UNIT CONTROL: Engine Operation: Alarm only or (if configured for shutdown) engine and unit shutdown and alarm.
  • Page 173 00031 Failed to Start - Auto Mode • ACTIVATION: Engine has tried to start three times unsuccessfully in the auto start mode. • UNIT CONTROL: Engine Operation: Shutdown and alarm. Electric Operation: Alarm condition only. • RESET CONDITION: Alarm may be manually reset using the display mounted keys or by turning the unit off, then back on again.
  • Page 174 00034 Engine Failed to Stop • ACTIVATION: When in Engine Operation, engine is turning more than 500 RPM for 20 seconds after unit shutdown or cycled off. Or, Oil Pressure switch is closed longer than 20 seconds after unit shutdown or cycle off.

  • Page 175: Check Starter

    00035 Check Starter Circuit • ACTIVATION: Engine speed fails to reach 50 rpm during two start attempts. • UNIT CONTROL: Engine Operation: Engine and unit shutdown and alarm. Electric Operation: This alarm will not activate in Electric Operation. • RESET CONDITION: Alarm may be manually reset using the display mounted keys or by turning the unit off, then back on again.
  • Page 176 00036 Check Coolant Temperature • ACTIVATION: Coolant temperature is below 32°F (0°C) after the engine has been running for five min- utes. • UNIT CONTROL: Engine Operation: Alarm only. Electric Operation: This alarm will not activate in Electric Operation. • RESET CONDITION: Auto reset when coolant temperature is higher than 36°F (2.2°C) or alarm may be manually reset using the display mounted keys or by turning the unit off, then back on again.
  • Page 177 00037 Check Low Speed RPM • ACTIVATION: The APX Control System is calling for low engine speed operation, and engine speed is less than 1200 rpm or greater than 1500 rpm for more than 60 seconds (120 seconds when the APX Con- trol System calls for a change from high to low speed, or when unit first starts).
  • Page 178 00038 Check High Speed RPM • ACTIVATION: The APX Control System is calling for high speed operation, and engine speed is less than 1650 rpm, or greater than 2075 rpm for more than 60 seconds (120 seconds when the APX Control Sys- tem calls for a change from low to high speed, or when unit first starts).
  • Page 179 00039 Check Engine RPM • ACTIVATION: In Engine Operation and Alarm 00130 is not active and Engine speed is greater than 1300 rpm for three seconds and: Engine speed is greater than 2100 rpm for five minutes or Engine speed is less than 1250 rpm for five minutes or Engine speed is less than 1200 rpm for 10 seconds •...
  • Page 180 00040 Check Engine Preheat Circuit • ACTIVATION: Engine Operation: Intake Air Heater amperage is less than 25 amps, or greater than 70 amps after 14 seconds of glow time NOTE This can only occur when the Engine Coolant Temperature is below 50°F (11°C) due to pre-heat time allowed.
  • Page 181 00041 Engine Stalled • ACTIVATION: The APX Control System is calling for the engine to run, Engine speed sensor is good, and engine speed is less than 10 rpm; or the A00130 (Check Engine RPM Sensor) alarm is ON, and the Oil Pressure switch contacts are open, and AL00013 (High Discharge Pressure) is not active.

  • Page 182: Check Engine

    00041 Engine Stalled (continued) 5. Check Engine Speed Sensor (ENSSN) - Inspect harness, connector pins and terminals. (See wiring schematic Section 10.) Verify no physical damage to harness, and no damage, moisture, or corrosion in connectors. 6. Check Engine Air-Intake System a.
  • Page 183 00051 Alternator (Battery Charger) Not Charging • ACTIVATION: Unit is running and the current flow is less than -1.0 amps between the alternator and the battery for three continuous minutes. • UNIT CONTROL: Engine Operation: Alarm only or (if Alternator Check Shutdown configuration is set to YES (configured for shutdown) engine and unit shutdown and alarm.
  • Page 184 00053 Box Temp Out-of-Range NOTE Corresponding alarm for Compartment 2 is AL00062, for Compartment 3 AL00063. • ACTIVATION: Condition One: If the unit is running in Pulldown and the SAT is not greater than 1°F (0.56°C) below the RAT or if the unit is running in Pull-Up and the SAT is not above the RAT, the configured action (Alarm only after 30 minutes or Alarm and Shutdown after 45 minutes) will be activated.

  • Page 185: Corrective Actions

    00053 Box Temp Out-of-Range (continued) NOTE Follow the steps below until a problem is found. Once a repair or correction has been made, clear the alarm(s). Refer to Note 1 in Notes section. Operate the unit through the appropriate modes to see if any active alarm occurs.
  • Page 186 00055 Check Air Defrost Switch • ACTIVATION: The defrost air switch has called for a defrost cycle within eight minutes of a defrost termi- nation for two consecutive defrost cycles. (The air switch contacts were closed continuously for 15 sec- onds before the defrost cycle was started.) •...

  • Page 187: Check Wiring

    00057 Check Remote Switch 1 (REMS1) • ACTIVATION: REMS1 is set to trigger an alarm if the switch is activated (opened or closed, depending on switch type) for more than five seconds. • UNIT CONTROL: Engine and Electric Operation: May be configured as alarm only, alarm and force low engine speed, or alarm and shutdown.
  • Page 188 00058 Check Remote Switch 2 (REMS2) • ACTIVATION: Remote Switch 2 is set to activate an alarm if the switch is activated (opened or closed, depending on switch type) for more than five seconds. • UNIT CONTROL: Engine and Electric Operation: May be configured as alarm only, alarm and force low engine speed, or alarm and shutdown.
  • Page 189 OK. b. Replace and setup main microprocessor. Refer to Section 5.4. NOTE Specific Configurations may be found on the TransCentral Website (Authorized Carrier Transicold Dealers only). 00060 Data Logger (DataLink Data Recorder) Time Wrong • ACTIVATION: The real time clock in the DataLink data recorder does not contain a valid date.
  • Page 190 00061 Door Open (DS1) • ACTIVATION: DS1 is set to trigger an alarm if the switch is activated (opened or closed, depending on switch type) for more than five seconds. • UNIT CONTROL: Engine and Electric Operation: May be configured as alarm only, alarm and force low engine speed, or alarm and shutdown.

  • Page 191: Out Of Range

    00062 C2 Box Temp Out-of-Range Refer to procedure for alarm 00053 Box Temp Out-of-Range. 00063 C3 Box Temp Out-of-Range Refer to procedure for alarm 00053 Box Temp Out-of-Range. 00073 No Power-Check Power Cord • ACTIVATION: The unit is set to operate in electric AND no AC power; incoming voltage at the High Volt- age Transformer (HVT) is less than 300VAC.
  • Page 192 00074 Phase Reversed • ACTIVATION: If the system is in electric mode and the START/RUNSTART/RUN Switch is ON and the system cannot properly detect the phase. • UNIT CONTROL: Engine Operation: Alarm only. Electric Operation: Required Shutdown. • RESET CONDITION: Auto reset when and the phase reversed switch = phase reverse okay for two sec- onds, or switch to diesel mode.
  • Page 193 00075 Compressor Motor Overload • ACTIVATION: If alarm 00022 Low Suction Superheat, 00027 High Suction Pressure and/or 00028 Check Refrigeration System was triggered with current below 5.5 amps, this alarm will also trigger or on restart from alarm 00022, 00027 and/or 00028 trigger on if compressor current does not rise above 1 amp, and alarm 00013 High Discharge Pressure (High Discharge Pressure) is not active.
  • Page 194 00076 Condenser Motor Overheated • ACTIVATION: The condenser fan motor Internal Protectors (IP-CDM1) circuit is open and alarm 00013 High Discharge Pressure is not active. • UNIT CONTROL: Engine Operation: Engine and unit shutdown and alarm. Electric Operation: Refrigeration system shutdown and alarm with PSCON still ener- gized.
  • Page 195 00076 Condenser Motor Overheated (continued) 7. Check IPC circuit a. Use Component Test mode to energize CDCON1 circuit. (Refer to Section 5.2.4.) Output will come on. b. Verify 12 VDC at CDCON1 A1 and A2. Inspect wiring between condenser and CCB. c.
  • Page 196 00077 Evaporator Motor Overheated • ACTIVATION: The evaporator fan motor Internal Protector (IP-EVM) is open and alarm 00013 High Dis- charge Pressure is not active. • UNIT CONTROL: Engine and Electric Operation: Shutdown (Main compartment outputs only) and alarm. • RESET CONDITION: Alarm 00109 Check 1EVCON Coil is active.
  • Page 197 00093 Check Startup Buzzer • ACTIVATION: The Buzzer (B) circuit is shorted or open. • UNIT CONTROL: Engine and Electric Operation: Alarm only. • RESET CONDITION: Auto reset when Buzzer amp draw is normal, or alarm may be manually reset using the display mounted keys or by turning the unit off, then back on again.

  • Page 198: Corrective Actions

    00094 Check Compressor Contactor 1 • ACTIVATION: Compressor motor contactor (CCON) circuit is shorted or open. • UNIT CONTROL: Engine and Electric Operation: Shutdown and alarm. • RESET CONDITION: Auto Reset or alarm may be manually reset via keypad or by turning the unit off, then back on again.
  • Page 199 00096 Check GENCOIL Coil • ACTIVATION: Generator contactor (GENCON) circuit is shorted or open. • UNIT CONTROL: Engine Operation: Engine and unit shutdown and alarm. Electric Operation: Alarm only. • RESET CONDITION: Auto Reset or alarm may be manually reset via keypad or by turning the unit off, then back on again.
  • Page 200 00098 Check High Temp Thermostat • ACTIVATION: With the Main Power switch toggled out of the OFF position, the EVHTS circuit is open. • UNIT CONTROL: Engine and Electric Operation: Alarm AND no heat allowed. • RESET CONDITION: Auto Reset when the EVHTS circuit is okay for 15 minutes, or alarm may be manu- ally reset via keypad or by turning the unit off, then back on again.
  • Page 201 00100 Overload / Ground Fault • ACTIVATION: Engine or Electric Operation is being called for and the overload ground fault module is reading more than 40 amps on any A/C current leg OR there is A/C voltage leaking to ground of more than 150 Milli-amps.
  • Page 202 00101 C2 Evap Motor Overheated • ACTIVATION: The 2nd compartment evaporator fan motor Internal Protector (IP-EVM) is open. • UNIT CONTROL: Engine and Electric Operation: Shutdown compartment 2 only. • RESET CONDITION: Alarm 00110 Check 2EVCON Coil is not active. Auto Reset after a 5 minute off time when motor overload input is within limits or alarm may be manually reset via keypad or by turning the unit off, then back on again.
  • Page 203 00102 C3 Evap Motor Overheated • ACTIVATION: The third compartment evaporator fan motor Internal Protector (IP-EVM) is open. • UNIT CONTROL: Engine and Electric Operation: Shutdown compartment 3 only. • RESET CONDITION: Alarm 00111 Check 3EVCON Coil is not active. Auto Reset after a five minute off time when motor overload input is within limits or alarm may be manually reset via keypad or by turning the unit off, then back on again.
  • Page 204 00103 Check 2HTCON1 Coil • ACTIVATION: Heater Contactor 1 in Compartment 2 (2HTCON1) circuit is shorted or open. • UNIT CONTROL: Engine and Electric Operation: Alarm only. • RESET CONDITION: Auto Reset or alarm may be manually reset via keypad or by turning the unit off, then back on again.
  • Page 205 00104 Check 2HTCON2 Coil • ACTIVATION: Heater Contactor 2 in Compartment 2 (2HTCON2) circuit is shorted or open. • UNIT CONTROL: Engine and Electric Operation: Alarm only. • RESET CONDITION: Auto Reset or alarm may be manually reset via keypad or by turning the unit off, then back on again.
  • Page 206 00105 Check 3HTCON1 Coil • ACTIVATION: Heater Contactor 1 in Compartment 3 (3HTCON1) circuit is shorted or open. • UNIT CONTROL: Engine and Electric Operation: Alarm only. • RESET CONDITION: Auto Reset or alarm may be manually reset via keypad or by turning the unit off, then back on again.
  • Page 207 00106 Check 3HTCON2 Coil • ACTIVATION: Heater Contactor 2 in Compartment 3 (3HTCON2) circuit is shorted or open. • UNIT CONTROL: Engine and Electric Operation: Alarm only. • RESET CONDITION: Auto Reset or alarm may be manually reset via keypad or by turning the unit off, then back on again.
  • Page 208 00109 Check 1EVCON Coil • ACTIVATION: Evaporator fan motor contactor (1EVCON) circuit is shorted or open. • UNIT CONTROL: Engine and Electric Operation: Alarm only. • RESET CONDITION: Auto Reset or alarm may be manually reset via keypad or by turning the unit off, then back on again.
  • Page 209 00111 Check 3EVCON Coil • ACTIVATION: Evaporator fan motor contactor (3EVCON) circuit in compartment 1 is shorted or open. • UNIT CONTROL: Engine and Electric Operation: Alarm only. • RESET CONDITION: Auto Reset or alarm may be manually reset via keypad or by turning the unit off, then back on again.
  • Page 210 00121 Check Ambient Air Sensor • ACTIVATION: Ambient Air Temperature Sensor (AAT) is not within range of -53 to +158°F (-47° to +70° C). • UNIT CONTROL: Engine and Electric Operation: A value of 122°F (50°C) will be used for any calculations. •...

  • Page 211: Check Sensor

    00122 Check Return Air Sensor • ACTIVATION: Return Air Temperature Sensor (RAT) is not within range of -53 to +158°F (-47 to +70° C). • UNIT CONTROL: Engine and Electric Operation: If Alarm 00123 Check Supply Air Sensor is not active: Alarm and switch to supply air control. If Alarm 00123 Check Supply Air Sensor is active: Alarm and the System will enter Cargo Protect...
  • Page 212 00123 Check Supply Air Sensor • ACTIVATION: Supply Air Temperature Sensor (SAT) is not within range of -53 to +158°F (-47 to +70° C). • UNIT CONTROL: Engine and Electric Operation: If Alarm 00022 Low Suction Superheat is not active: Functional Parameter Temperature Control is set for Supply Air and the setpoint is in the perishable range: Alarm and switch to return air control.
  • Page 213 00124 Check Defrost TERM 1 Sensor • ACTIVATION: Defrost Termination Temperature Sensor (1DTT) is not within the range of -53° to +158°F (-47° to +70° C.) • UNIT CONTROL: Engine and Electric Operation: If Alarm 00022 Low Suction Superheat is not active: Alarm and initiate defrost if 1RAT is below 45°F (7.2°C).
  • Page 214 00125 Check Compressor Discharge Sensor • ACTIVATION: Compressor Discharge Temperature Sensor (CDT) is not within the range of -40° to +392°F (-40° to +200°C). • UNIT CONTROL: Engine and Electric Operation: Alarm Only. • RESET CONDITION: Auto reset when sensor is in range or, alarm may be manually reset using the dis- play mounted keys or by turning the unit off, then back on again.
  • Page 215 00128 Low / Unbalanced A/C Amps • ACTIVATION: The compressor is on and AC Current Sensor 1, 2 or 3 is less than 5 amps for 10 seconds. OR, if the difference between AC Current 1 and AC Current 2, 2-3 and 1-3 is greater than 10 amps for 10 seconds.
  • Page 216 00129 Check Engine Coolant Sensor • ACTIVATION: Engine Coolant Temperature Sensor (ENCT) is not within the range of -58 to +266°F (-50 to +130°C). • UNIT CONTROL: Engine Operation: Alarm Only. Electric Operation: This alarm does not activate in electric operation. •...
  • Page 217 00130 Check Engine RPM Sensor • ACTIVATION: If ambient temperature is above 32°F (0°C), and this is the second or third start attempt, and the engine oil pressure switch is closed (oil pressure good), and engine speed is sensed at less than 1000;...
  • Page 218 00131 Check Evap Temp Sensor • ACTIVATION: Evaporator Outlet Temperature Sensor (EVOT) is not within the range of -53 to +158°F (-47 to +70°C) • UNIT CONTROL: Engine and Electric Operation: Alarm only and superheat for EVXV will be calculated using SAT or DTT if alarm 00123 (Check Supply Air Sensor) is active.
  • Page 219 00133 Check Remote Temp Sensor 1 00134 Check Remote Temp Sensor 2 00135 Check Remote Temp Sensor 3 • ACTIVATION: Remote Temperature Sensor (REMSN1, REMSN2 or REMSN3) is not within the range of -53 to +158°F (-47 to +70°C.) • UNIT CONTROL: Engine and Electric Operation: Alarm only.
  • Page 220 00136 C2 Check Supply Air Sensor • ACTIVATION: Compartment 2 Supply Air Temperature Sensor (SAT) is not within the range of -53 to +158°F (-47 to +70° C). NOTE Compartment 2 Supply Air Temperature Sensor (SAT) is optional and may not be present. If the configuration is set to INSTALLED and the sensor is not connected, this alarm will be active.
  • Page 221 00137 C2 Check Return Air Sensor • ACTIVATION: Compartment 2 Return Temperature Sensor (RAT) is not within the range of -53 to +158°F (-47 to +70° C). • UNIT CONTROL: Engine and Electric Operation: If setpoint is in the perishable range, compartment 2 will shutdown.
  • Page 222 00138 C3 Check Return Air Sensor • ACTIVATION: Compartment 3 Return Temperature Sensor (RAT) is not within the range of -53 to +158°F (- 47 to +70° C). • UNIT CONTROL: Engine and Electric Operation: If setpoint is in the perishable range, compartment 3 will shutdown.
  • Page 223 00139 C2 Check Defrost TERM 1 Sensor • ACTIVATION: Defrost Termination Temperature Sensor for Compartment 2, (2DTT) is not within the range of -53° to +158°F (-47° to +70° C.) • UNIT CONTROL: Engine and Electric Operation: If Alarm 00137 C2 Check Return Air Sensor C2 CHECK RETURN AIR SENSOR is not active: alarm and initiate defrost if 1RAT is below 455F (7.25C).
  • Page 224 00140 C3 Check Defrost TERM 1 Sensor • ACTIVATION: Defrost Termination Temperature Sensor for Compartment 3, (3DTT) is not within the range of -53° to +158°F (-47° to +70° C.) • UNIT CONTROL: Engine and Electric Operation: If Alarm 138 C3 CHECK RETURN AIR SENSOR is not active: alarm and initiate defrost if 1RAT is below 455F (7.25C).
  • Page 225 P00146 C2 Check Heater 1 Circuit This device is checked twice in Pretrip - once in Test 2 and again in Test 7. • ACTIVATION TEST 2: (unit not running): Normal draw for the 2HTCON1 coil is 0.05 to 1.0 amps (12 VDC).
  • Page 226 P00146 C2 Check Heater 1 Circuit (continued) 6. Check Heater Element Connections a. Inspect high voltage heater connections at evaporator. Check for corrosion, water damage or burning / discoloration. Remove, repair, or replace if required. b. Disconnect heater element plug. Heater resistance per Section 2.11.
  • Page 227 P00147 C2 Check Heater 2 Circuit (continued) 460 VAC Circuit: 4. Check Amp Draw of 2HTCON2 Heater Circuit a. With the unit running and calling for Heat, use a clamp on ammeter to check the current draw of all three legs. Must be within range shown in Section 2.11 for all three legs.
  • Page 228 P00152 Check Fuel / Speed Actuator Circuit • ACTIVATION: The circuit current draw is outside the normal range. • UNIT CONTROL: Engine and Electric Operation: Pretrip will fail in test 2 and display “PRETRIP FAIL AND COMPLETED”. • RESET CONDITION: Auto reset if Pretrip is started again or alarm may be manually reset using the dis- play mounted keys or by turning the unit off then back on again.
  • Page 229 P00155 Check Coolant Temp Sensor • ACTIVATION: Engine Coolant Temperature Sensor (ENCT) is not within the range of -58 to +266°F (-50 to +130°C). • UNIT CONTROL: Engine and Electric Operation: Pretrip will fail and display “PRETRIP FAIL AND COM- PLETED”.
  • Page 230 P00158 Check Ambient Air Sensor • ACTIVATION: Ambient Air Temperature Sensor (AAT) is not within the range of -53 to +158°F (-47 to +70°C). • UNIT CONTROL: Pretrip will fail and display “PRETRIP FAIL AND COMPLETED”. • RESET CONDITION: Auto reset if Pretrip is started again, or alarm may be manually reset using the dis- play mounted keys or by turning the unit off, then back on again.
  • Page 231 P00163 C3 Check Heater 1 Circuit This device is checked twice in Pretrip - once in Test 2 and again in Test 7. • ACTIVATION TEST 2: (unit not running): Normal draw for the 3HTCON1 coil is 0.05 to 1.0 amps (12 VDC).
  • Page 232 P00163 C3 Check Heater 1 Circuit (continued) 460 VAC Circuit: 6. Check Amp Draw of 3HTCON1 Heater Circuit a. With the unit running and calling for Heat, use a clamp on ammeter to check the current draw of all three legs. Must be within range shown in Section 2.11 for all three legs.
  • Page 233 P00167 C3 Check Heater 2 Circuit This device is checked twice in Pretrip - once in Test 2 and again in Test 7. • ACTIVATION TEST 2: (unit not running): Normal draw for the 3HTCON2 contactor coil is 0.05 to 2.0 Amps (12 VDC).
  • Page 234 P00167 C3 Check Heater 2 Circuit (continued) 460 VAC Circuit: 6. Check Amp Draw of 3HTCON2 Heater Circuit a. With the unit running and calling for pull up in, use a clamp on ammeter to check the current draw of all three legs. Must be within range shown in Section 2.11 for all three legs.
  • Page 235 P00173 Check Economizer • ACTIVATION: Test #12, Check Economizer Expansion Valve fails. • UNIT CONTROL: Engine and Electric Operation: Alarm Only. • RESET CONDITION: Auto reset if Pretrip is started again or alarm may be manually reset using the dis- play mounted keys or by turning the unit off then back on again.
  • Page 236 P00177 Check EXV (EVXV) Superheat • ACTIVATION: With the unit running in Test 11, after the control system closes the EVXV to 0%, evapora- tor pressure fails to drop by 20 psig (1.36 bar) or fails to go below 0 psig / bar OR the EVXV appears not to be opening to the full capacity position.
  • Page 237 P00180 Check Suction Mod Valve • ACTIVATION: With the unit running in Pretrip Test #10, after the microprocessor attempts to close CSMV, the suction pressure fails to drop below 0 psig (0 bar). • UNIT CONTROL: Engine and Electric Operation: Pretrip will fail and display “PRETRIP FAIL IN TEST 10”. •...
  • Page 238 P00184 C2 Check Evaporator Fan Motor This device is checked twice in Pretrip - once in Test 2 and again in Test 8. • ACTIVATION TEST 2: (unit not running): Normal draw for the 2EVCON contactor coil is 0.05 to 2.0 amps (12 VDC).
  • Page 239 P00184 C2 Check Evaporator Fan Motor (continued) 460 VAC Circuit: 5. Check Amp Draw of 2EVCON Evaporator Fan Motor Circuit a. With the unit running in either HEAT or COOL use a clamp on ammeter to check the current draw of all three legs.
  • Page 240 P00185 C3 Check Evaporator Fan Motor This device is checked twice in Pretrip - once in Test 2 and again in Test 8. • ACTIVATION TEST 2: (unit not running): Normal draw for the 2EVCON contactor coil is 0.05 to 2.0 amps (12 VDC).
  • Page 241 P00185 C3 Check Evaporator Fan Motor (continued) 460 VAC Circuit: 5. Check Amp Draw of 3EVCON Evaporator Fan Motor Circuit a. With the unit running in either HEAT or COOL use a clamp on ammeter to check the current draw of all three legs.
  • Page 242 P00187 Check Heater 1 Circuit This device is checked twice in Pretrip - once in Test 2 and again in Test 7. • ACTIVATION TEST 2: (unit not running): Normal draw for the 1HTCON1 coil is 0.05 to 1.0 amps (12 VDC).
  • Page 243 P00187 Check Heater 1 Circuit (continued) 460 VAC Circuit Check Amp Draw of 1HTCON1 Heater Circuit a. With the unit running and calling for Heat, use a clamp on ammeter to check the current draw of all three legs. Must be within range shown in Section 2.11 for all three legs.
  • Page 244 P00188 Check Heater 2 Circuit This device is checked twice in Pretrip - once in Test 2 and again in Test 8. • ACTIVATION TEST 2: (unit not running): Normal draw for the 1HTCON2 contactor coil is 0.05 to 2.0 amps (12 VDC).
  • Page 245 P00188 Check Heater 2 Circuit (continued) 460 VAC Circuit 5. Check Amp Draw of 1HTCON2 Heater Circuit a. With the unit running and calling for Heat, use a clamp on ammeter to check the current draw of all three legs. Must be within range shown in Section 2.11 for all three legs.
  • Page 246 P00189 Check Evaporator Fan Motor This device is checked twice in Pretrip - once in Test 2 and again in Test 9. • ACTIVATION TEST 2: (unit not running): Normal draw for the 1EVCON contactor coil is 0.05 to 2.0 amps (12 VDC).
  • Page 247 P00189 Check Evaporator Fan Motor (continued) 460 VAC Circuit 5. Check Amp Draw of 1EVCON Evaporator Fan Motor Circuit a. With the unit running in either HEAT or COOL, use a clamp on ammeter to check the current draw of all three legs. Must be within range shown in Section 2.11 for all three legs.
  • Page 248 P00190 Check Evaporator Fan Motor • ACTIVATION: Normal draw for the condenser fan motors is 0.8 to 3.5 amps (460 VAC). The circuit tests outside this range. • UNIT CONTROL: Engine and Electric Operation: Pretrip will fail and display “PRETRIP FAIL AND COM- PLETED”.

  • Page 249: Corrective Actions

    P00199 C2 Check Return Air Sensor • ACTIVATION: Compartment 2 Return Air Temperature Sensor (RAT) is not within the range of -53 to +158°F (-47 to +70°C). • UNIT CONTROL: Engine and Electric Operation: Pretrip will fail and display “PRETRIP FAIL AND COM- PLETED”.
  • Page 250 P00207 Check Compressor Contact Circuit • ACTIVATION: Normal draw for the CCON contactor coil is 0.0 to 1.0 amps (12 VDC). The circuit tests outside this range. • UNIT CONTROL: Engine and Electric Operation: Pretrip will fail and display “PRETRIP FAIL AND COM- PLETED”.
  • Page 251 P00208 Check Generator Cont • ACTIVATION: Normal draw for the GENCON coil is 0.0 to 1.0 amps (12 VDC). The circuit tests outside this range. • UNIT CONTROL: Engine and Electric Operation: Pretrip will fail and display “PRETRIP FAIL AND COM- PLETED”.
  • Page 252 P00209 Check Standby Cont Circuit • ACTIVATION: Normal amps for the PSCON or PSCON2 contactor coils 0.0 to 1.0 amps (12 VDC). The circuit(s) test outside this range. (During this test either PSCON or PSCON2 will be tested depending on the phase reversal module.) •...
  • Page 253 00210 C3 Check Return Air Sensor • ACTIVATION: Compartment 3 Return Air Temperature Sensor is not within the range of -53 to +158°F (- 47 to +70°C). • UNIT CONTROL: Engine and Electric Operation: Pretrip will fail and display “PRETRIP FAIL AND COM- PLETED”.
  • Page 254 P00217 Check Fuel Pump • ACTIVATION: Normal draw for the fuel pump is 0.9 to 2.0 Amps (12 VDC). The circuit tests outside this range. • UNIT CONTROL: Engine and Electric Operation: Pretrip will fail and display “PRETRIP FAIL AND COMPLETED”.
  • Page 255 00223 Engine Maintenance Due • ACTIVATION: The Engine Maintenance Hour Meter time has expired. • UNIT CONTROL: Engine and Electric Operation: Alarm Only. Alarm Light will NOT be turned on. • RESET CONDITION: Alarm may be manually reset using the display mounted keys. Corrective Actions: 1.
  • Page 256 00224 Standby Maintenance Due • ACTIVATION: The Standby Hour Meter time has expired. • UNIT CONTROL: Engine and Electric Operation: Alarm Only. Alarm Light will NOT be turned on. • RESET CONDITION: Alarm may be manually reset via keypad. Corrective Actions: 1.
  • Page 257 00226 Service Soon - PM #1 Due • ACTIVATION: The Maintenance Hour Meter #1 time has expired. • UNIT CONTROL: Engine and Electric Operation: Alarm Only. Alarm Light will NOT be turned on. • RESET CONDITION: Alarm may be manually reset via keypad. Corrective Actions: 1.
  • Page 258 00228 Service Soon - PM #3 Due • ACTIVATION: The Maintenance Hour Meter #3 time has expired. • UNIT CONTROL: Engine and Electric Operation: Alarm Only. Alarm Light will NOT be turned on. • RESET CONDITION: Alarm may be manually reset via keypad. Corrective Actions: 1.

  • Page 259: Perform Maintenance

    00230 Service Soon - PM #5 Due • ACTIVATION: The Maintenance Hour Meter #4 time has expired. • UNIT CONTROL: Engine and Electric Operation: Alarm Only. Alarm Light will NOT be turned on. • RESET CONDITION: Alarm may be manually reset via keypad. Corrective Actions: 1.
  • Page 260 Check Model # in microprocessor. Check model number on nameplate. b. Enter correct model number. Select the correct model number in the “MODEL NUMBER” configuration. If correct model number is not found, install (or have Carrier Transicold dealer install) latest software revision.
  • Page 261 00237 Function Parameters Error • ACTIVATION: There is an error in one or more of the Functional Parameters that are stored in the main microprocessor memory. • UNIT CONTROL: Engine and Electric Operation: Incorrect Functional Parameter(s) will be automatically set for default value. •...
  • Page 262 00238 Configuration Error • ACTIVATION: There is an error in the Configuration settings that are stored in the main microprocessor memory. • UNIT CONTROL: Engine and Electric Operation: Incorrect Configuration(s) will be automatically set for default value. • RESET CONDITION: Auto reset when valid Configuration(s) are entered, or alarm may be manually reset by turning the unit off, then back on again.
  • Page 263 Corrective Actions: 1. Check Microprocessor Software Revision: Check microprocessor software. The unit should have the software upgraded to the latest version, provided for Carrier Transicold dealers on the TransCentral site. 2. Reset Microprocessor a. Place the START/RUN-OFF switch in the OFF position. Disconnect positive battery cable or remove F1 (80 amp) fuse.
  • Page 264 00248 Config Mode / HP2 Error • ACTIVATION: EEPROM Configuration is out of range. • UNIT CONTROL: Engine and Electric Operation: Shutdown and alarm. • RESET CONDITION: Auto reset only when valid info is entered. NOTE Follow the steps below until a problem is found. Once a repair or correction has been made, clear the alarm(s).
  • Page 265 Corrective Actions: 1. Check Software Revision: Check microprocessor software. The unit should have the software upgraded to the latest version, provided for Carrier Transicold dealers on the TransCentral site. 2. Reset Microprocessor a. Place the START/RUN-OFF switch in the OFF position. Disconnect positive battery cable or remove F1 (80 amp) fuse.
  • Page 266 02001 Rear Panel Shutdown • ACTIVATION: 'UNIT OFF' soft key is pressed from Remote Panel. • UNIT CONTROL: Engine and Electric Operation: Shutdown and alarm. • RESET CONDITION: Auto reset when all module software versions are compatible. Or alarm may be manually reset using the display mounted keys or by turning the unit off, then back on again.
  • Page 267 02002 Low Discharge Superheat • ACTIVATION: Compressor discharge superheat is less than 68°F (20°C) after three minutes of engaging the Econ SH offset logic, the compressor is on, and Evaporator Flood back control hasn’t been active in the last three minutes and suction superheat is greater than 40°F (4.4°C) NOTE This alarm can be caused by a stuck open ECXV or LIV, causing too much liquid to be sent into the compressor at the economizer connection.
  • Page 268 Once Emergency Bypass mode has been activated, the unit will operate normally for 24 hours, a countdown timer will be shown on the display. This 24-hour window of operation will keep the load safe, and provide enough time to contact the nearest Carrier Transicold Service Center for repair of the unit.
  • Page 269 03001 Engine Load Calibration • ACTIVATION: Activate alarm if: • Condition 1 = At engine start if the engine throttle sensor (Rack Position Sensor) value is less than 90%. • Condition 2 = After start if the sensor value does not drop below 90% within five seconds. •...

  • Page 270: Check Wiring

    04000 Check Remote Switch 3 (REMS3) • ACTIVATION: REMS3 is set to trigger an alarm if the switch is activated (opened or closed, depending on switch type) for more than five seconds. • UNIT CONTROL: Engine and Electric Operation: May be configured as alarm only, alarm and force low engine speed or alarm and shutdown.
  • Page 271 04001 Check Remote Switch 4 (REMS4) • ACTIVATION: REMS4 is set to trigger an alarm if the switch is activated (opened or closed, depending on switch type) for more than five seconds. • UNIT CONTROL: Engine and Electric Operation: May be configured as alarm only, alarm and force low engine speed or alarm and shutdown.
  • Page 272 04002 High Economizer Superheat • ACTIVATION: With unit running in economized mode for 15 minutes, ECXV open greater than 99% for five minutes, and a box temperature less than 14°F (-10°C); economizer superheat is above 74°F (23°C) for five minutes. NOTE This alarm can be caused by a stuck ECXV, not letting enough liquid into the economizer circuit.
  • Page 273 04004 No Setpoint Change 04005 No Setpoint Change C2 04006 No Setpoint Change C3 • ACTIVATION: Operator failed to press '=' key after entering a setpoint change • UNIT CONTROL: Alarm only. • RESET CONDITION: Setpoint change entered correctly. NOTE Follow the steps below until a problem is found.
  • Page 274 05009 Check Standby Contactor One (PSCON) • ACTIVATION: Standby contactor one (PSCON) circuit is shorted or open. • UNIT CONTROL: Engine Operation: Alarm condition only. Electric Operation: Required Shutdown • RESET CONDITION: 15 Minutes have elapsed since activation or alarm may be manually reset via key- pad or by turning the unit off, then back on again.
  • Page 275 05010 Check Standby Contactor Two (PSCON2) • ACTIVATION: Standby contactor one (PSCON2) circuit is shorted or open. • UNIT CONTROL: Engine Operation: Alarm condition only. Electric Operation: Required Shutdown • RESET CONDITION: 15 Minutes have elapsed since activation or alarm may be manually reset via key- pad or by turning the unit off, then back on again.
  • Page 276 05012 Check ENCU Power Circuit NOTE When operation of the engine is required the main microprocessor will provide a signal from terminal 3MM-9. This signal has been referred to as the “run relay”, based on pre-APX control systems that had an actual relay in place. Whenever the term “run relay” is used in APX control system discussion, it is referring to the engine run output from 3MM-9 to the ENCU at terminal ENCU-44.
  • Page 277 05014 Check Starter Solenoid Circuit • ACTIVATION: A problem has been detected in the starter solenoid coil (SS) circuit. If this alarm is acti- vated while the control system is calling for SS to be energized, the circuit is detected shorted. If this alarm occurs at any other time, the circuit is detected open.
  • Page 278 05016 Check Remote Amber Light • ACTIVATION: A problem has been detected in the alarm (amber) light circuit (LB). If this alarm is acti- vated while the circuit is energized, the circuit is detected shorted. If this alarm is activated at any other time, the circuit is detected open.
  • Page 279 05019 Check CDCON2 Coil • ACTIVATION: Condenser fan motor contactor (CDCON2) circuit is shorted or open. • UNIT CONTROL: Engine and Electric Operation: Alarm only. • RESET CONDITION: Auto Reset or alarm may be manually reset via keypad or by turning the unit off, then back on again.
  • Page 280 05020 Check HTR CNTR One • ACTIVATION: Heater Contactor 1 (1HTCON1) circuit is shorted or open. • UNIT CONTROL: Engine and Electric Operation: Alarm only. • RESET CONDITION: Auto Reset or alarm may be manually reset via keypad or by turning the unit off, then back on again.
  • Page 281 05021 Check HTR CNTR Two • ACTIVATION: Heater Contactor 2 (1HTCON2) circuit is shorted or open. • UNIT CONTROL: Engine and Electric Operation: Alarm only. • RESET CONDITION: Auto Reset or alarm may be manually reset via keypad or by turning the unit off, then back on again.
  • Page 282 05022 C2 Check High Temp Thermostat • ACTIVATION: With the Main Power switch toggled out of the OFF position, the EVHTS circuit is open. • UNIT CONTROL: Engine and Electric Operation: Alarm AND no heat allowed. • RESET CONDITION: Auto Reset when the EVHTS circuit is okay for 15 minutes, or alarm may be manu- ally reset via keypad or by turning the unit off, then back on again.
  • Page 283 05023 C3 Check High Temp Thermostat • ACTIVATION: With the Main Power switch toggled out of the OFF position, the EVHTS circuit is open. • UNIT CONTROL: Engine and Electric Operation: Alarm AND no heat allowed. • RESET CONDITION: Auto Reset when the EVHTS circuit is okay for 15 minutes, or alarm may be manu- ally reset via keypad or by turning the unit off, then back on again.
  • Page 284 05029 PM Fuse 3/5/7 Alarm • Trigger-on Condition: PM Reports Fuse Status Bad. • Control Response: Alarm condition only. • Trigger-off Condition: Activate conditions not true for two seconds. NOTE Follow the steps below as necessary until a problem is found. Once a repair or correction has been made, the active alarm should clear itself (refer to reset condition above).
  • Page 285 05032 PM Fuse 11 Alarm • Trigger-on Condition: Output Power and Power Enable Power detected at PM AND F11 Output Power not detected at TPC for six seconds. • Control Response: Alarm condition only. • Trigger-off Condition: Activate conditions not true for two seconds. NOTE Follow the steps below as necessary until a problem is found.
  • Page 286 05034 Power Enable Contact Fail Alarm • Trigger-on Condition: Power Enable Control is ordered ON and Power Enable Power not detected at PM for six seconds. • Control Response: Alarm condition only. • Trigger-off Condition: Activate conditions not true for two seconds. NOTE Follow the steps below as necessary until a problem is found.
  • Page 287 05038 Compartment 2 EXVX 1 Fault • ACTIVATION: EVXV has detected an over current failing condition five times at least one minute apart in the last 12 minutes. Stepper must be configured and not disabled for fault to be detected. •...
  • Page 288 05039 Compartment 2 EXVX 2 Fault • ACTIVATION: EVXV has detected an over current failing condition five times at least one minute apart in the last 12 minutes. Stepper must be configured and not disabled for fault to be detected. •...
  • Page 289 05040 Compartment 3 EXVX 1 Fault • ACTIVATION: EVXV has detected an over current failing condition five times at least one minute apart in the last 12 minutes. Stepper must be configured and not disabled for fault to be detected. •...
  • Page 290 05041 Compartment 3 EXVX 2 Fault • ACTIVATION: EVXV has detected an over current failing condition five times at least one minute apart in the last 12 minutes. Stepper must be configured and not disabled for fault to be detected. •...
  • Page 291 06000 Condenser Motor2 Overheated • ACTIVATION: The condenser fan motor Internal Protectors (IP-CDM2) circuit is open. • UNIT CONTROL: Engine Operation: Engine and unit shutdown and alarm. Electric Operation: Refrigeration system shutdown and alarm with PSCON still ener- gized. • RESET CONDITION: Auto Reset when motor overload input is within limits, or change to engine Opera- tion, or alarm may be manually reset via keypad or by turning the unit off, then back on again.
  • Page 292 06001 Check Light Bar • ACTIVATION: A problem has been detected in the light circuit (LB). If this alarm is activated while the cir- cuit is energized, the circuit is detected shorted. If this alarm is activated at any other time, the circuit is detected open.
  • Page 293 07001 Economizer Press Sensor • ACTIVATION: Economizer Pressure (ECOP) sensor is out of range. • UNIT CONTROL: Engine and Electric: Alarm only. Economizer forced to STANDARD mode when alarm is active. • RESET CONDITION: Economizer Pressure sensor is in range or alarm may be manually reset using the display mounted keys or by turning the unit off, then back on again.

  • Page 294: Check Sensor

    07002 C3 Check Supply Air Sensor • ACTIVATION: Supply Air Temperature Sensor (SAT) is not within the range of -53 to +158°F (-47 to +70° C). • UNIT CONTROL: Engine and Electric: If Alarm 00122 is not active: functional Parameter Temperature Control is set for Supply Air and the set- point is in the perishable range: alarm and switch to return air control.
  • Page 295 07003 C2 Check Evap Temp Sensor • ACTIVATION: Evaporator Outlet Temperature Sensor (EVOT) in compartment 2 is not within the range of - 53 to +158°F (-47 to +70°C) • UNIT CONTROL: Engine and Electric: Alarm only and superheat for EVXV will be calculated using SAT or DTT if alarm 00123 (Check Supply Air Sensor) is active.
  • Page 296 07004 C3 Check Evap Temp Sensor • ACTIVATION: Evaporator Outlet Temperature Sensor (EVOT) in compartment 3 is not within the range of - 53 to +158°F (-47 to +70°C) • UNIT CONTROL: Engine and Electric: Alarm only and superheat for EVXV will be calculated using SAT or DTT if alarm 00123 (Check Supply Air Sensor) is active.
  • Page 297 07006 Suction Pressure Sensor • Trigger-on Condition: Suction Pressure Sensor is out of range. • Control Response: Alarm condition only. • Trigger-off Condition: Suction Pressure Sensor is in range. Alarm may be manually reset via keypad or by cycling power. NOTE Follow the steps below until a problem is found.
  • Page 298 07012 Check Econ Pressure Sensor • Trigger-on Condition: An open or shorted Econ Pressure Sensor transducer • Control Response: Alarm only unless condition is present for > two minutes, after two minutes it becomes a shutdown alarm • Reset Condition: Valid response received by controlling MSM or alarm manual reset or power cycle. NOTE Follow the steps below until a problem is found.
  • Page 299 07014 Check C2 Redundant RAT Sensor • Trigger-on Condition: An open or shorted C2 Redundant RAT Sensor transducer • Control Response: Alarm only unless condition is present for > two minutes, after two minutes it becomes a shutdown alarm • Reset Condition: Valid response received by controlling MSM or alarm manual reset or power cycle.
  • Page 300 07015 C2 RAT Temp Sensors Out of Range • Trigger-on Condition: An open or shorted C RAT Temp Sensor Out of Range transducer • Control Response: Alarm only unless condition is present for > two minutes, after two minutes it becomes a shutdown alarm •...
  • Page 301 P11000 Check Condenser Fan Motor 2 • ACTIVATION: Normal draw for the condenser fan motors is 0.8 to 3.5 amps (460 VAC). The circuit tests outside this range. • UNIT CONTROL: Engine and Electric Operation: Pretrip will fail and display “PRETRIP FAIL AND COM- PLETED”.
  • Page 302 P12001 C2 Check Evap Outlet Temp • ACTIVATION: Evaporator Outlet Temperature Sensor (EVOT) is not within the range of -53 to +158°F (- 47 to +70°C.) • UNIT CONTROL: Engine and Electric Operation: Pretrip will fail and display “PRETRIP FAIL AND COM- PLETED”.
  • Page 303 12003 Economizer Temperature Sensor Check • ACTIVATION: Economizer Temperature Sensor (EVOT) in compartment 3 is not within the range of -53 to +158°F (-47 to +70°C) • UNIT CONTROL: Engine and Electric: Alarm only and superheat for EVXV will be calculated using SAT or DTT if alarm 00123 (Check Supply Air Sensor) is active.
  • Page 304 P13000 Check Condenser Fan 2 Circuit • ACTIVATION: Normal draw for the CDCON2 contactor coil is 0.05 to 2.0 amps (12 VDC). The circuit tests outside this range. • UNIT CONTROL: Engine and Electric Operation: Pretrip will fail and display “PRETRIP FAIL AND COM- PLETED”.
  • Page 305 P14002 C3 Check EVAP1 Superheat P14003 C3 Check EVAP2 Superheat • ACTIVATION: Compartment 3 evaporator (1 or 2) superheat and/or Compartment 3 evaporator pressure out of range activates this alarm. • UNIT CONTROL: Engine and Electric Operation: Pretrip will fail and display “PRETRIP FAIL AND COM- PLETED”.
  • Page 306 22400 MSM1-IN-CAN Fail • ACTIVATION: Alarm 21100 No Comm From Any Board to Main Micro is not active and the main micro- processor cannot communicate internally. • UNIT CONTROL: Engine and Electric Operation: Shutdown all modules except the display and alarm. (The alarm will only display if the display module is communicating.) MSM1 status LED will illuminate steady green (not pulsing).
  • Page 307 22402 MSM1-IN-High Sensor Voltage NOTE This alarm is an indication that there is a short in the DC current transformer wiring from another (nominal 12 VDC) circuit into the transducer or CT sensor circuit. • ACTIVATION: Voltage from main microprocessor to the sensors is greater than 5.5 VDC •...
  • Page 308 22403 MSM1-IN-Lost Configuration • ACTIVATION: Input Board reports an invalid configuration • UNIT CONTROL: Engine and Electric Operation: Required Shutdown. • RESET CONDITION: Auto reset when communication is restored, or alarm may be manually reset by turning the unit off, then back on again. Corrective Actions: 1.
  • Page 309 22500 MSM-2-IN-CAN Fail • ACTIVATION: Alarm 21100 No Comm From Any Board to Main Micro is not active and the main micro- processor cannot communicate internally. • UNIT CONTROL: Engine and Electric Operation: Shutdown all modules except the display and alarm. (The alarm will only display if the display module is communicating.) MSM1 status LED will illuminate steady green (not pulsing).
  • Page 310 22502 MSM2-IN-High Sensor Voltage NOTE This alarm is an indication that there is a short in the DC current transformer wiring from another (nominal 12 VDC) circuit into the transducer or CT sensor circuit. • ACTIVATION: Voltage from main microprocessor to the sensors is greater than 5.5 VDC •...
  • Page 311 22503 MSM2-IN-Lost Configuration • ACTIVATION: Input Board reports an invalid configuration • UNIT CONTROL: Engine and Electric Operation: Required Shutdown. • RESET CONDITION: Auto reset when communication is restored, or alarm may be manually reset by turning the unit off, then back on again. Corrective Actions: 1.
  • Page 312 23800 PM - CAN Fail • ACTIVATION: No communications from TPC. NOTE Follow the steps below as necessary until a problem is found. Once a repair or correction has been made, the active alarm should clear itself (refer to reset condition above). Operate the unit through the appropriate modes to see if any active alarm occurs.
  • Page 313 24200 No Comm from Micro to CCB2 • ACTIVATION: If Alarm 21100 is not active, and Unit is not starting in diesel. No sync responses have been received from the CCB2 Module for 10 seconds. • UNIT CONTROL: Engine and Electric Operation: Required Shutdown. If alarm remains active for two minutes issue a shutdown command to all modules except the display.
  • Page 314 24201 Sensor Input Voltage Low CCB2 • ACTIVATION: The Voltage Supply for the Sensors on the CCB2 is below the low voltage limit 4.5V • UNIT CONTROL: Engine and Electric Operation: Alarm Only. • RESET CONDITION: The Voltage Supply for Sensors on the CCB2 is above low voltage limit 4.5V NOTE Follow the steps below until a problem is found.
  • Page 315 24300 No Comm from Micro to CCB3 • ACTIVATION: Alarm 21100 is not active, and Unit is not starting in diesel. No communication from the CCB3 Module for 10 seconds. • UNIT CONTROL: Engine and Electric Operation: Required Shutdown. If alarm remains active for two minutes issue a shutdown command to all modules except the display.
  • Page 316 24302 Sensor Input Voltage High CCB3 • ACTIVATION: The Voltage Supply for the Sensors on the CCB3 is above the high voltage limit 5.5V. • UNIT CONTROL: Engine and Electric Operation: Alarm Only. • RESET CONDITION: The Voltage Supply for Sensors on CCB3 is below the High voltage limit 5.5V. NOTE Follow the steps below until a problem is found.
  • Page 317 25300 No Comm from Micro to STP3 • ACTIVATION: Alarm 21100 is not active and No sync responses have been received from the Stepper 3 Module for 10 seconds. • UNIT CONTROL: Engine and Electric Operation: Required Shutdown. If alarm remains active for two minutes issue a shutdown command to all modules except the display.
  • Page 318 25301 Over Current STP3 • ACTIVATION: The stepper current is reported to be too high by stepper board 3 (Indicated by Stepper Output Voltage < 5V) for three seconds as timed at stepper board. • UNIT CONTROL: Engine and Electric Operation: Alarm only. Steppers on board with problem disabled (Powered OFF) until good power reported from Stepper Board at which point they are re-enabled.
  • Page 319 25302 Check Input Voltage STP3 • ACTIVATION: The stepper input voltage is reported out of valid range (9V to 17V) by stepper board 3 for three seconds. • UNIT CONTROL: Engine and Electric Operation: Alarm only. Steppers on board with problem disabled (Powered OFF) until good power reported from Stepper Board at which point they are re-enabled.
  • Page 320 26100 No Comm from Micro to ENCU • ACTIVATION: Main microprocessor cannot communicate with the engine control unit over the CAN bus and AL00013 (High Discharge Pressure) is not active. • UNIT CONTROL: Engine Operation: Shutdown and alarm. Electric Operation: This alarm will not activate in Electric Operation. •...
  • Page 321 62-12340 7–168...
  • Page 322 Removing Charge R-452A. Unit uses R-452A refrigerant and POE oil. The use of inert gas brazing procedures is mandatory for all Carrier Transicold refrigeration units; otherwise compressor failure will occur. For more information, refer to Technical Procedure 98-50553-00 Inert Gas Brazing.
  • Page 323 Section Layout Service procedures are presented herein under the following major sections: • Scheduled Maintenance - Section 8.2 • Pre-trip Inspection - Section 8.3 • External Surface Service (grille, surround, doors and display module) - Section 8.5 • Engine And Engine Related Systems Service - Section 8.6 •...
  • Page 324 Table 8–1 Maintenance Schedule System Operation Reference Section Cooling System 1. Check coolant change interval (refer to Section c. of this table). If Section 8.6.12 replacement is not required, check antifreeze concentration using a refractometer (CTD P/N 07-00435-00) 2. Clean condenser/radiator surfaces Section 8.6.12 3.

  • Page 325: Oil Viscosity

    d. Oil Change Intervals Oil Type Oil Change / ESI Filter Change Petroleum 3000 hours or 2 years (Maximum oil drain interval is two years) These maintenance schedules are based on the use of approved oils and regular pre-trip inspections of the unit. Failure to follow the recommended maintenance schedule may affect the life and reliability of the refrigeration unit.

  • Page 326: Mounting Bolts

    8.5.2 Surround Removal NOTE It is not necessary to remove the grille before removing the surround. 1. Ensure the unit will not start automatically by placing the START/RUN-OFF switch in the OFF position and disabling the starter. Disconnect the high voltage source and lockout/tagout the receptacle. 2.
  • Page 327 8.5.3 Door Latch Maintenance and Cable Replacement 8.5.3.1 Door Latch Maintenance Proper maintenance is important for smooth operation of the latch assemblies and the latch pins that are mounted on the unit’s frame (See Figure 8.1). In order to keep the movable parts clean and lubricated, CTD recommends the use of a de-greasing cleaner and LPS 2 lubricant.
  • Page 328 Engine and Engine Related Systems Service Procedures for servicing the engine, fuel system, engine cooling system and air cleaner are provided in the following sub-paragraphs. 8.6.1 Fuel System The fuel system consists of the fuel tank, mechanical fuel pump, fuel filter, fuel injection pump, the injectors and interconnecting tubing.
  • Page 329 8.6.2 Priming the Fuel Pump System 1. Turn on the SROS switch and make sure the electric fuel pump bowl is full of fuel. NOTE If the fuel bowl on the electric pump is not full, turn off the SROS switch to turn off fuel pump, remove electric fuel pump bowl and fill (from clean fuel source) as needed 2.
  • Page 330 8.6.3 Electric Fuel Pump Screen, Check/Replace 1. Ensure the unit will not start automatically by placing the START/RUN-OFF switch in the OFF position and disabling the starter. 2. Remove bowl (Figure 8.6). 3. Remove gasket and screen. WARNING Use the required protective eye wear and clothing when working with solvents. 4.
  • Page 331 8.6.5 Suction Side Fuel Filter Replacement 1. Ensure the unit will not start automatically by placing the START/RUN-OFF switch in the OFF position and disabling the starter. Disconnect the high voltage source and lockout/tagout the receptacle. 2. Place a shallow pan under filter (Figure 8.7).
  • Page 332 8.6.6 Fuel Level Sensor (FLS) An optional fuel level sensor (item1, Figure 8.8) supplies an input signal to the control system as to the percent of fuel remaining in the fuel tank. The control system will activate alarm A00001 - “LOW FUEL LEVEL WARNING”...
  • Page 333 5. Using new gaskets, reinstall fuel level sensor components. Mounting holes are not symmetrical. There is an alignment hole in the sensor, alignment holes and index dimples in the gaskets and an alignment notch in the focus tube flange to assist in aligning the components. Install mounting screws and washers in all mounting holes finger tight.
  • Page 334 8.6.8 Engine Oil and Oil Filter 8.6.8.1 Checking the Engine Oil Level: 1. Warm up the engine and then stop it by placing the START/RUN-OFF switch in the OFF position. Disconnect the high voltage source and lockout/tagout the receptacle. 2. Unscrew the cap/dipstick see Figure 8.9.
  • Page 335 8.6.8.3 Changing Engine Oil Filter 1. If not continuing from preceding, warm up the engine and then stop it by placing the START/ RUN-OFF switch in the OFF position. Ensure the unit will not start automatically by disabling the starter. Disconnect the high voltage source and lockout/tagout the receptacle.

  • Page 336: Cooling System

    8.6.10 Engine Control System The engine is controlled by the engine control unit (ENCU), crankshaft position sensor, the engine speed sensor (ENSSN), the engine oil pressure switch (ENOPS) and the engine coolant temperature sensor (ENCT). Refer to Figure 8.11. • The ENCU provides oil pressure, coolant temperature, engine load and speed signals to the APX Control System over the CAN.
  • Page 337 NOTE Draining the coolant from the engine petcock will leave approximately one quart (.9 liters) of coolant in the block. 3. Drain coolant into a suitable container by removing coolant bottle cap and then the engine drain plug. NEVER POUR COLD WATER INTO A HOT ENGINE, however hot water can always be added to a cold engine.
  • Page 338 Figure 8.12 Radiator Assembly 1. Screw, Captive Washer M6 x 20MM 2. Bracket 3. Bracket 4. Bracket 5. Bracket 6. Engine Drain 8–17 62-12340...
  • Page 339 8.6.13 Replace Water Pump V-Belt WARNING Beware of moving belts and belt-driven components. When working with belts, beware of pinch points. The water pump v-belt is driven by a sheave on the engine crankshaft. Frayed, cracked or worn belts must be replaced.
  • Page 340 8.6.14 Crankcase Breather The engine uses a closed type breather with the breather line attached to the cylinder head cover. (See Figure 8.14). The breather assembly should be cleaned once a year or at every oil change interval (which- ever comes first). See Table 8–1.
  • Page 341 Refrigerant System Service Service of the refrigerant system includes connection of refrigerant system equipment, servicing the refrigerant charge, leak checking and evacuation. Procedures for refrigerant system service are provided in the following sub paragraphs. Figure 8.15 Refrigerant System Service Vacuum Pump Vacuum Indicator Refrigerant Cylinder Refrigerant Recovery Unit...
  • Page 342 8.7.2 Servicing Refrigerant Charge Servicing of the refrigerant charge includes: • Checking charge level • Checking for noncondensibles • Removing the charge • Pumping down the low side • Pumping down the compressor • Adjusting the charge level • Adding a complete charge Procedures for charge service are provided in the following sub-paragraphs.
  • Page 343 8.7.2.3 Removing Charge (R-452A) WARNING R-452A refrigerant is an A1 non-flammable refrigerant blend which includes some mildly flammable constituents. As such, please follow all proper service and maintenance procedures.Ensure that proper evacuation procedure is strictly followed before performing any “hot work,” including, but not limited to brazing or welding, on these units to prevent flare- up of residual refrigerant.
  • Page 344 8.7.2.3.1 Unit Connection Figure 8.17 Unit Connection Connect the manifold gauge set to the unit (refer to Figure 8.17) • Hose A to low-pressure compressor service valve • Hose B to vacuum pump • Hose C to high-pressure compressor service valve •...
  • Page 345 8.7.2.3.2 Recovery System Installation Figure 8.18 Recovery System 1. Connect recovery machine to hose (B). 2. Place the R-452A recovery bottle onto the scale and note the weight. 3. Check the admissible charge indicated in the R-452A recovery bottle information. 4.
  • Page 346 10. Disconnect the recovery machine and dispose of the R-452A recovery bottle according to local regulation. End of recovery procedure 11. Purge with Nitrogen. For more information about nitrogen instruction, refer to Carrier Transicold document #98-60068-00 (Brazing Instructions). 8.7.2.5 Pumping Down the Low Side Components on the low side of the refrigeration system (the filter drier, EVXV, ECXV, evaporator coil, CSMV, heat exchanger, suction line etc.) may be serviced or replaced without having to completely...
  • Page 347 6. Ensure the unit will not start automatically by placing the START/RUN-OFF switch in the OFF position and disabling the starter. Disconnect the high voltage source and lockout/tagout the receptacle. 7. Frontseat (close by turning clockwise) the discharge service valve and the refrigerant will be trapped between the compressor discharge service valve and the liquid line service valve.
  • Page 348 4. When approximately 5 lbs. (2.3 kg) have been added, close the cylinder valve, and backseat the liquid line service valve. 5. Recheck for the correct refrigerant charge. (Refer to preceding step a.) Repeat preceding steps as required. When charge level adjustment is complete, remove refrigerant service equipment. 8.7.2.8 Adding a Complete Charge 1.
  • Page 349 8.7.3.2 Leak Checking System without Charge The refrigeration system must be leak checked once it is closed and all repairs complete. 1. Ensure the unit will not start automatically by placing the START/RUN-OFF switch in the OFF position and disabling the starter. Disconnect the high voltage source and lockout/tagout the receptacle. 2.
  • Page 350 8.7.3.3 Leak Checking with Low Side Pumped Down The low side of the system must be leak checked once it is closed and all repairs complete. 1. Ensure the unit will not start automatically by placing the START/RUN-OFF switch in the OFF position and disabling the starter.
  • Page 351 8.7.3.4 Leak Checking Compressor The compressor connections, suction, discharge, and economizer, must be leak checked once the com- pressor is closed and all repairs complete. 1. Ensure the unit will not start automatically by placing the START/RUN-OFF switch in the OFF position and disabling the starter.

  • Page 352: Evacuation And Dehydration

    8.7.4 Evacuation And Dehydration Moisture is detrimental to refrigerant systems. The presence of moisture in a refrigeration system can have many undesirable effects such as: • Copper plating • Acid sludge formation • “Freeze-up” of the expansion valve • Formation of acids resulting in metal corrosion. Proper evacuation of the system will remove any moisture from inside the system.
  • Page 353 13. Repeat steps 8 through 11 until the vacuum stays below 2000 microns. 14. Once the system holds a good vacuum, it is ready to be charged with refrigerant. Refer to Section 8.7.2. 8.7.4.2 Evacuation of the Low Side 1. Evacuate only after a low side leak check. (Refer to Section 8.7.3) 2.
  • Page 354 Compressor Service WARNING Before removal of the compressor, relieve the internal pressure by very carefully loosening the couplings to break the seal. The scroll compressor achieves low suction pressure very quickly. Do not use the compressor to evacuate the system below 0 psig. Never operate the compressor with the suction or discharge service valves closed (frontseated).
  • Page 355 8.8.1 Remove and Replace the Compressor 1. Remove refrigerant charge. Refer to Section 8.7.2. 2. To ensure the unit will not start automatically, place the START/RUN-OFF switch in the OFF position and remove the negative battery cable. Disconnect the high voltage source and lockout/tagout the receptacle. 3.
  • Page 356 11. Inject a small amount of lubricant (shipped with the compressor) into each pin connection in the power plug. For ease of installation and to prevent the “D” ring from rolling, use a small amount of lubricant to lubricate the outside radius of the “D” ring. 12.
  • Page 357 4. Remove hoses from radiator. Unit uses R-452A and POE oil. The use of inert gas brazing procedures is mandatory for all Carrier Transicold refrigeration units; otherwise compressor failure will occur. For more information Refer to Technical Procedure 98-50553-00 Inert Gas Brazing.
  • Page 358 5. Unbraze refrigerant lines from condenser coil. 6. Disconnect the hail and bug screen sufficient to reach the ambient sensor (6) and wiring. Remove sensor and wiring from radiator frame (5). 7. Remove the eight bolts (7) securing the condenser/ radiator assembly to the unit. 8.
  • Page 359 Figure 8.21 Condenser/Radiator Assembly 1. Bracket 13. Gasket (Subcooler) 2. Bracket 14. Bracket 3. Condenser Coil 15. Bracket 4. Gasket 16. Bracket 5. Gasket 17. Bracket 6. Gasket 18. Radiator Coil 7. Gasket 19. Bracket 8. Gasket 20. Bracket 9. Screw, Captive Washer 21.
  • Page 360 8.9.2.5 Replacing Receiver Sight Glass or Fusible Plug 1. Remove the refrigerant charge. Refer to Section 8.7.2. 2. Loosen the sight glass or fusible plug to relieve any remaining pressure. Remove and discard glass or plug. 3. Using new o-ring, install component. Torque the sight glass to 15 to 25 ft/lbs (20.3 to 33.9 Nm). Torque the fusible plug to 48 to 96 inch/lbs (5.4 to 10.8 Nm).
  • Page 361 Figure 8.22 Economizer Section 1. Liquid Outlet Line (To EVXV) 2. Liquid Inlet Line (From Drier) 3. Economizer Heat Exchanger 4. Economizer Outlet Pressure Transducer (ECOP) 5. Economizer Expansion Valve (ECXV) 6. Economizer Outlet Temperature Sensor (ECOT) 7. Compressor Economizer Connection 8.
  • Page 362 8.9.4 Stepper Test Harness A stepper test harness (CTD P/N 07-00515) is Figure 8.23 Stepper Test Harness available for testing the compressor suction modulation valves (CSMV) and evaporator expansion valve (EVXV). The test harness is installed by disconnecting the 1- 2MSM connector at the 1MSM, and plugging the C1 connector (see Figure...
  • Page 363 8.9.5.1 Diagnostics - Control System or Wiring Voltage Test 1. Place the START/RUN-OFF switch in the OFF position and disconnect the starter motor wire at the weather tight connector. 2. Disconnect the CSVM connector. The stepper test harness can also be used, refer to Section 8.9.4 3.
  • Page 364 8.9.5.4 Replacing the Internal Motor/Piston Assembly 1. Pump down the low side. Refer to Section 8.7.2. 2. Remove internal motor/piston assembly, and replace with a new assembly and gaskets. The motor/piston assembly should be set to 100% open when received from the warehouse. This is to ensure the valve seal is not damaged when it is installed.
  • Page 365 Figure 8.26 Evaporator Expansion Valve Coil Coil Electronic Expansion Valve Connector Strainer 8.9.6.1 Diagnostics - Microprocessor or Wiring Voltage Check At startup, the APX Control System moves the EVXV and ECXV to known positions. During this time (about six seconds after the PER is energized) the voltage sent to the valves can be measured. 1.
  • Page 366 5. To test the ECXV, start the unit and measure the voltage between pins E and A and then between E and B, E and C and E and D. A voltage should be read by the digital voltmeter for each pair of wires. If voltage is measured on all of the wire pairs there is a good signal.
  • Page 367 8.9.6.3 Diagnostics - Valve If the valve failed Pretrip and passed the preceding diagnostic testing, the valve internal mechanism is damaged, and the piston and motor assembly is to be replaced. Testing the EVXV valve internal mechanism 1. Install a manifold gauge set on the suction service valve and a stepper motor drive tester. Refer to Section 8.7.1.
  • Page 368 8.9.7 Liquid Injection Solenoid Valve 8.9.7.1 Replacing the Coil NOTE The coil may be replaced without removing the refrigerant. 1. To ensure the unit will not start automatically, place the START/RUN-OFF switch in the OFF position and remove the negative battery cable. Disconnect the high voltage source and lockout/tagout the receptacle. 2.
  • Page 369 Figure 8.28 Solenoid Valve (LIV) 1.Locking Nut 2.Upper O-Ring 3.Threaded Collar 4.Coil 5.Lower O-Ring 6.Armature Tube 7.Internal O-Ring 8.Spring 9.Armature 8.9.8 High Pressure Switch 8.9.8.1 Checking High Pressure Switch WARNING Do not use a nitrogen cylinder without a pressure regulator. Cylinder pressure is approximately 2350 PSIG (160 bar).

  • Page 370: Pressure Transducers

    3. Connect switch to a cylinder of dry nitrogen, see Figure 8.29 4. Set nitrogen pressure regulator higher than open setting for switch being tested. For pressure switch set- tings refer to Section 2.11. 5. Close valve on cylinder and open bleed-off valve. 6.
  • Page 371 Test Transducer Wiring: 1. Verify that the wiring to the transducer is correct. NOTE CDP connector is identified with a red tape band. The CSP connector is identified with a blue band. 2. If required, power the transducer circuit by placing the unit in PC mode, refer to Section 5.3.2.
  • Page 372 Figure 8.30 Power Module 1. Mounting Fasteners 2. 35-pin Connector 3. Engine Preheat Terminal (EPH) 4. Plastic Bushings 5. Alternator Positive Terminal (ALT +) 6. Battery Negative Terminal (BAT-) 7. Battery Positive Terminal (BAT +) 8. Door Mounted Legend Sticker 6 6 6 8.
  • Page 373 When a module is replaced, software should be upgraded before switching the unit on. This will ensure software compatibility of all modules. 6. Reinstall the battery cables, start unit and run Pretrip to check operation. 8.9.14 Contactor Control Board (CCB) The Contactor Control Board (CCB) is located in the control box.
  • Page 374 4. Remove cover and set it off to the side. Figure 8.33 Control Box Internal View Figure 8.32 Removing the Cover 5. Remove the seven screws that hold down the fuse panel. Refer to Figure 8.34. 6. Disconnect L1, L2, and L3 (on CCON). Refer to 7.
  • Page 375 Disconnect the connector from the top of the CCB.Refer to Figure 8.37. Figure 8.36 Removing Connector NOTE At this point the CCB may start to swing out of the box. It is best to hold it in while removing the last bolt.
  • Page 376 When a module is replaced, software should be upgraded before switching the unit on. This will ensure software compatibility of all modules. 18. Reinstall the negative battery cable. 19. Make sure the latest software has been loaded to ensure all modules are compatible, refer to Section 5.3.4.
  • Page 377 Figure 8.37 Faceplate Figure 8.38 CAN/Stepper Boards 10. To remove the CCB, remove the four screws that secure the CCB to the faceplate and then remove the CCB and back plate. 11. Remove the four screws that secure the CCB to the back plate. Be careful not to drop or lose the four loose spacers underneath.
  • Page 378 Figure 8.40 CCB Board Spacers 13. Secure the CCB to the back plate by reinstalling four CCB mounting screws (LONG screws) along with new nylon washers (P/N 58-00900-02) under the screw heads. Snug all four screws, then torque to 18+/- 3 in-lb. Figure 8.41 CCB Board Mounting Screws 14.
  • Page 379 Figure 8.43 CAN/Stepper Boards Installed 16. Reinsert the CAN and Stepper boards connectors through the faceplate and secure each connector to the faceplate with the four #4 screws. Snug all screws, then torque to 6+/-1 in-lb. DO NOT over tighten. 17.
  • Page 380 8.9.16 Megohmmeter Test Procedure Check of the electrical insulation integrity and connections using a resistance tester such as CTD part number 07-00481-00, that can be set to 1000V. CAUTION Before connecting a megohmmeter, place the Main Power switch in the OFF position. Disconnect the high voltage source, lockout/ tagout the receptacle and disconnect the negative battery connection.
  • Page 381 8.9.17 Light Bar The light bar may be tested using a 12 VDC source. To test the light bar: 1. To ensure the unit will not start automatically, place the START/RUN-OFF switch in the OFF position and remove the negative battery cable. Disconnect the high voltage source and lockout/tagout the receptacle. 2.

  • Page 382: Operation

    8.9.18 Overload Ground Fault (OGF) 8.9.18.1 Operation The OGF is designed to detect current overload and fault to ground in the AC voltage circuits. The function of the OGF is to shut down the power supply (generator or standby) when current is over 40 amp for 2 sec- onds, or leakage to ground is more than 150mA.
  • Page 383 8.9.18.2 OGF Checkout Procedure: 1. Check the FAULT LED on the module. If the LED is illuminated the module has activated and 12 VDC power supply is correct. Perform a megohm test (refer to Section ) to determine if a fault to ground exists. This test will also help determine if an excessive current condition exists due to leakage to ground.
  • Page 384 8.9.20 Evaporator Blower and Motor NOTE Blower motor bearings are factory sealed and do not require additional grease. 1. To ensure the unit will not start automatically, place the START/RUN-OFF switch in the OFF position and remove the negative battery cable. Disconnect the high voltage source and lockout/tagout the receptacle. 2.
  • Page 385 Figure 8.49 Evaporator Blower Assembly 1.Motor 5.Nozzle 2.Evaporator Fan Bracket Assembly 6.Nozzle Cover 3.Dual Evaporator Fan Assembly 7.Blower Assembly 4.Stator Bracket 8.Supply Air Sensor 62-12340 8–64...
  • Page 386 8.9.21 Condenser Fan Assemblies 1. To ensure the unit will not start automatically, place the START/RUN-OFF switch in the OFF position and remove the negative battery cable. Disconnect the high voltage source and lockout/tagout the receptacle. 2. Disconnect the motor electrical connector. Note motor is assembled to allow routing of the wiring down the lower right hand leg of the welded support.
  • Page 387 Figure 8.50 Condenser Fan Assembly 4 PLCS. 1. Condenser Fan Assembly 6. Fan 2. Divider 7. Motor 3. Shroud 8. Welded Support 4. Frame 9. Wire Routing 5. Fan and Motor Assembly 8.9.22 Battery Charger (BTYC) NOTE A battery of known good condition must be connected to the charger before doing the following test. The charger operates only when the input voltage is between 275 VAC and 640 VAC.
  • Page 388 8.9.23 Generator 8.9.23.1 Preventive Maintenance and Operating Precautions WARNING Be aware of HIGH VOLTAGE supplied at the power plug or from the generator. When performing service or maintenance procedures, ensure any two-way communication is disabled in accordance with the manufacturer’s instruction, ensure the main power switch is in the OFF position, and whenever practical, disconnect the high voltage source, lockout/tagout the receptacle and disconnect the negative battery connection.
  • Page 389 8.9.23.2 Generator Replacement Service procedures for replacement of the generator (see Figure 8.56) involve removal of components as required to swing the unidrive assembly out from the generator end sufficient to allow removal of the gen- erator from the back of the engine. The procedures that follow cover the general steps required. Minor modifications of the procedures may be required depending on the routing of wires within the unit being serviced.
  • Page 390 8.9.23.3 Generator Removal 1. To ensure the unit will not start automatically, place the START/RUN-OFF switch in the OFF position and remove the negative battery cable. Disconnect the high voltage source and lockout/tagout the receptacle. 2. Remove the front roadside and curbside doors. 3.
  • Page 391 16. To prepare for removal of the rotor bolts, install Figure 8.54 Flywheel Locking Tool the flywheel locking tool (Carrier P/N 07-60083- 00, see Figure 8.52, Figure 8.55). 17. Swing the unidrive assembly out sufficient to remove the generator. 18. Remove the tape from the generator splice con- nections.
  • Page 392 WARNING Never disassemble the generator rotor from the stator due to the high force required to do so and the high magnetic field that will result. The field present when the rotor is disassembled from the stator may interfere with cardiac implants such as pacemakers and defibrillators. 24.
  • Page 393 6. Install the fan (with the blades facing away from the engine) and torque the fan bolt 12 to 14 ft/lbs (16.3 to 19 Nm). 7. Remove the flywheel locking tool. 8. Prepare the replacement generator power wires by installing four crimp splices (see Figure 8.59), one on each wire, and then route the wires through the cover grommet.

  • Page 394: Sensor Checkout

    21. Reinstall the battery cable connections at the battery. 22. Reinstall the doors. 23. Remove the lockout/tagout equipment, start unit and run Pretrip. 8.9.24 Compressor Discharge Temperature Sensor In accordance with standard procedures, values for testing the sensor are provided in Table 8–4.
  • Page 395 Table 8–3 Sensor Resistance Sensors AAT, RAT, SAT, ENCT, DTT, CST, EVOT, REMSN 1, 2, and 3 °F °C Ohms °F °C Ohms °F °C Ohms °F °C Ohms 336,500 -7.8 49,060 24.4 10,250 56.7 2,809 -38.9 312,600 -6.7 46,230 25.6 9,760 57.8...
  • Page 396 Table 8–4 Sensor Resistance (CDTS) °C °F Ohms °C °F Ohms °C °F Ohms °C °F Ohms 2,889,600 64.4 117,656 168.8 12,306 273.2 2,335 -36.4 2,532,872 68.0 107,439 172.4 11,524 276.8 2,223 -32.8 2,225,078 71.6 98,194 176.0 10,793 280.4 2,119 -29.2 1,957,446 75.2...
  • Page 397 Refer to the following two tables for Temperature Pressure Charts for R-452A refrigerant. Note that the liquid state pressure value and the vapor state pressure value of the R-452A refrigerant are different and more variable than those of the R-404A refrigerant. Table 8–5 R-452A Temperature Pressure Chart Temperature Liquid...
  • Page 398 Table 8–6 Compressor Discharge Table 8–7 Compressor Suction Pressure Transducer Pressure/Voltage Pressure Transducer Pressure/Voltage PSIG Voltage PSIG Voltage -0.7 -5.0 -0.3 10.0 15.0 20.0 25.0 10.2 11.9 13.6 15.3 17.0 18.7 20.4 22.1 23.8 25.5 27.2 30.6 Table 8–8 Current Sensor Millivolt Output vs Current Sensed Amps MV Output Amps...
  • Page 399 62-12340 8–78...

  • Page 400: Unit Troubleshooting

    SECTION 9 Unit Troubleshooting Under no circumstances should anyone attempt to repair sealed module internal components. Should a problem develop with these components, contact your nearest Carrier Transicold dealer for replacement. NOTE Run a Pretrip and check all active alarms before continuing with troubleshooting.
  • Page 401 Indication/Trouble Possible Causes Action/Reference Section 9.1.2 Engine Starts Then Stops Fuel supply restricted Check No fuel in tank Check Leak in fuel system Check Faulty fuel control operation Engine Manual Plugged fuel filter 8.6.5 Plugged inlet screen to mechanical pump 8.6.3 Plugged inlet screen to electric pump 8.6.4...
  • Page 402 Indication/Trouble Possible Causes Action/Reference Section 9.1.6 Miscellaneous Engine Troubleshooting Air cleaner or hose restricted 8.6.10 Air in fuel system 8.6.2 Air vent restricted in fuel tank cap Clean Restricted fuel lines Engine Manual Loss of power Defective fuel injection pump Engine Manual Defective injector(s) or incorrect type Engine Manual...
  • Page 403 Generator Indication/Trouble Possible Causes Action/Reference Section Damaged harness Check No voltage with engine running GENCON damaged Check Open or short in stator windings Check Low engine speed Correct Low voltage Excessive load Check High resistance connections - connections warm or hot Clean and Tighten Fluctuating speed 8.6.11...
  • Page 404 Indication/Trouble Possible Causes Action/Reference Section 9.4.3 Unit Operates Long Or Continuously In Cooling Hot Load Allow time to pull down Refrigerated Compartment Defective or insufficient refrigerated compartment insula- Correct tion or air leak Abnormal pressure 9.4.8 Refrigeration system Temperature sensor malfunction 8.10.15 Check system for noncondensibles 8.7.2...

  • Page 405: Abnormal Noise

    Indication/Trouble Possible Causes Action/Reference Section Does not terminate or cycles on DTT malfunction 8.10.15 defrost Hot Load Allow time to pull down Refrigerated Compartment Defective or insufficient refrigerated compartment insula- Correct tion or air leak 9.4.8 Abnormal Pressure - Cooling Condenser coil dirty 8.9.2 Condenser fans rotating backwards...
  • Page 406 Indication/Trouble Possible Causes Action/Reference Section Evaporator fan rotating backwards 8.10.10 No or partial evaporator Evaporator fan defective 8.10.10 air flow Evaporator air flow blocked Check 9.4.11 Expansion Valve (EVXV) Malfunction Low refrigerant charge 8.7.2 EVOT defective 8.10.15 Coil not seated properly on valve 8.9.9 Valve / Valve Coil defective 8.9.6...
  • Page 407 SECTION 10 Wiring 10.1 Harness Connector Wiring All illustrations provided in this Section are looking at the connector connection end (with the wires in the back). Table 10–1 HVB1A Table 10–2 HVB2A From Terminal From Terminal SP40 SP41 SP42 2-1MSM-3 SP46 2-1MSM-12 2-2MSM-20...
  • Page 408 Table 10–4 1DP12 Table 10–3 1DP10 From Terminal From Terminal 1 – 3MSM – 3 1 – 2MSM – 7 1 – 3MSM – 26 1 – 3MSM – 15 1 – 2MSM – 8 1 – 3MSM – 27 1 –...
  • Page 409 Table 10–5 2DP10 Table 10–6 2DP12 From Terminal From Terminal 2 – 2MSM – 2 2 – 3MSM – 3 2 – 2MSM – 3 2 – 3MSM – 26 2 – 2MSM – 4 2 – 3MSM – 15 2 –...
  • Page 410 Table 10–8 1-2MSM Table 10–7 MTVL-RMT From Terminal SP30 Component Terminal SP13 CSMV – A SP27 CSMV – B PM – 2 CSMV – C SP27 CSMV – D SP10 1DP12 – E 1DP12 – A 1DP12 – B 1DP12 – C 1DP12 –...
  • Page 411 Table 10–9 1-3MSM Component Terminal Component Terminal FLS – B AAT – A SP31 CST – A 1DP10 – A 1DP10 – E 1DP10 – G ECOT – A OPT – E OPT – J SP44 ECOP – 3 DP12 – F FLS –...
  • Page 412 Table 10–10 DM Table 10–11 1-1MSM From Terminal From Terminal SP11 PM – 24 SP10 1 – 2MSM – 29 PM – 12 J1 – A SATCOM2 – A 1 – 2MSM – 30 SP21 SP21 SATCOM – A Unused Terminals: 4, 5, 9, 11, 13, & 14 SATCOM2 –...
  • Page 413 Table 10–12 2-1MSM Table 10–13 2-2MSM From Terminal 2DP12 – E 2DP12 – A 2DP12 – B 2DP12 – C From Terminal 2DP12 – D SP13 2 – 1MSM – 11 2 – 2MSM – 29 1DAS – A HVB1A – C OPT –...
  • Page 414 Table 10–14 2-3MSM Table 10–15 OPT From Terminal From Terminal 1 – 2MSM – 13 2DP10 – A 1 – 2MSM – 25 2DP10 – E 1 – 2MSM – 14 2DP10 – G 1 – 2MSM – 15 2DP12 – G 1 –...
  • Page 415 Table 10–17 PM Table 10–16 ENCU From Terminal 1 – 1MSM – 10 MTLV – RMT – F SP20 SP30 DP12 – J SS – 1 From Terminal FP – 2 ENCT – B FHR – S ENSSN – 2 SP41 ENCT –...
  • Page 416 Table 10–18 Splice Points Splice Point # Component Splice Point # Component 1 – 1MSM – 11 1 – 1MSM – 4 CANCOM – C DM – 2 DM – 1 TERM3 – A HVB1A - F 1 – 1MSM – 8 SP13 DM –...
  • Page 425 Central America and Mexico Carrier Carrier Transicold Transicold 700 Olympic Drive Ejercito Nacional 253-A Piso 5 Colonia Anahuac 11320 Mexico D.F. Athens, GA 30601 USA ©2024 Carrier Corporation. Printed in USA 6/'24. Carrier, Carrier Transicold is a registered trademark of Carrier Corporation.