Carrier AquaSnap 30MPA Series Controls, Start-Up, Operation, Service, And Troubleshooting
Liquid chillers with scroll compressors and comfortlink controls
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Also See for AquaSnap 30MPA Series:
- User manual (16 pages) ,
- Operation and service manual (80 pages) ,
- Installation instructions manual (20 pages)
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Controls, Start-Up, Operation,
Service, and Troubleshooting
CONTENTS
SAFETY CONSIDERATIONS. . . . . . . . . . . . . . . . . . . . .2,3
GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7
Conventions Used in this Manual . . . . . . . . . . . . . . . . 3
Basic Controls Usage . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
CONTROLS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-36
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Main Base Board (MBB) . . . . . . . . . . . . . . . . . . . . . . . . . . 7
AUX Board (AUX) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Energy Management Module (EMM) . . . . . . . . . . . . . . 7
Current Sensor Board (CSB) . . . . . . . . . . . . . . . . . . . . . 7
Expansion Valve (EXV) Board . . . . . . . . . . . . . . . . . . . . 7
Enable/Off/Remote Control Switch . . . . . . . . . . . . . . . 7
Emergency On/Off Switch . . . . . . . . . . . . . . . . . . . . . . . . 7
Board Addresses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Control Module Communication . . . . . . . . . . . . . . . . . 7
Carrier Comfort Network
Sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
• COOLER LEAVING FLUID SENSOR
• COOLER ENTERING FLUID SENSOR
• CONDENSER LEAVING FLUID SENSOR
• CONDENSER ENTERING FLUID SENSOR
• COMPRESSOR RETURN GAS
TEMPERATURE SENSOR
• OUTDOOR-AIR TEMPERATURE SENSOR
• DUAL LEAVING WATER TEMPERATURE SENSOR
• DISCHARGE TEMPERATURE THERMISTOR
• SPACE TEMPERATURE SENSOR
Energy Management Module . . . . . . . . . . . . . . . . . . . . 16
Loss-of-Cooler Flow Protection . . . . . . . . . . . . . . . . . 16
Condenser Flow Protection . . . . . . . . . . . . . . . . . . . . . 16
Thermostatic Expansion Valves (TXV) . . . . . . . . . . 16
Electronic Expansion Valves (EXV) . . . . . . . . . . . . . 17
Capacity Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
• MINUTES LEFT FOR START
• MINUTES OFF TIME
• CAPACITY CONTROL OVERRIDES
Time, Day, and Date . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Cooling Set Point Select . . . . . . . . . . . . . . . . . . . . . . . . 25
Ice Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Cooler Pump Control. . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Alarm Routing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Cooler Pump Sequence of Operation . . . . . . . . . . . 27
Condenser Pump/Condenser Fan Output
Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Temperature Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Demand Limit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
• DEMAND LIMIT (2-Stage Switch Controlled)
• EXTERNALLY POWERED DEMAND LIMIT
(4 to 20 mA Controlled)
• DEMAND LIMIT (CCN Loadshed Controlled)
Cooling Set Point (4 to 20 mA) . . . . . . . . . . . . . . . . . . 34
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Catalog No. 04-53300170-01
Page
Interface . . . . . . . . . . . . . 13
®
Printed in U.S.A.
Liquid Chillers with Scroll Compressors
and ComfortLink Controls
Digital Scroll Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
PRE-START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36,37
System Check. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
START-UP AND OPERATION. . . . . . . . . . . . . . . . . 37-40
Actual Start-Up. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Check Refrigerant Charge. . . . . . . . . . . . . . . . . . . . . . . 38
Check Compressor Oil Level . . . . . . . . . . . . . . . . . . . . 39
Adjust Oil Charge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Operating Limitations . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
• TEMPERATURES
• VOLTAGE — ALL UNITS
OPERATION SEQUENCE. . . . . . . . . . . . . . . . . . . . . . . . 40
SERVICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40-52
Service Test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Charging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Electronic Components . . . . . . . . . . . . . . . . . . . . . . . . . 41
• CONTROL COMPONENTS
Electronic Expansion Valve (EXV). . . . . . . . . . . . . . . 41
EXV Troubleshooting Procedure . . . . . . . . . . . . . . . . 42
Compressor Replacement . . . . . . . . . . . . . . . . . . . . . . 44
30MP Cooler and 30MPW Condenser . . . . . . . . . . . 44
• BRAZED-PLATE COOLER AND CONDENSER
HEAT EXCHANGER REPLACEMENT
• BRAZED-PLATE COOLER AND CONDENSER
HEAT EXCHANGER CLEANING
Water Treatment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Oil Charge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Check Refrigerant Feed Components . . . . . . . . . . . 45
• FILTER DRIER
• MOISTURE-LIQUID INDICATOR
• THERMOSTATIC EXPANSION VALVE (TXV)
• MINIMUM LOAD VALVE
• PRESSURE RELIEF DEVICES
Check Unit Safeties . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Thermistors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Pressure Transducers . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Chilled Water Flow Switch . . . . . . . . . . . . . . . . . . . . . . 47
Strainer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
Replacing Defective Modules . . . . . . . . . . . . . . . . . . . 52
MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
Recommended Maintenance Schedule . . . . . . . . . . 52
TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . 52-71
Complete Unit Stoppage and Restart. . . . . . . . . . . . 52
• GENERAL POWER FAILURE
• UNIT ENABLE-OFF-REMOTE CONTROL SWITCH
IS OFF
• CHILLED FLUID PROOF-OF-FLOW SWITCH OPEN
• OPEN 24-V CONTROL CIRCUIT BREAKER(S)
• COOLING LOAD SATISFIED
• THERMISTOR FAILURE
• ENABLING AND DISABLING COMPRESSORS
• COMPRESSOR DISCHARGE CHECK VALVE
• LOW SATURATED SUCTION
• COMPRESSOR SAFETIES
Form 30MP-4T
AquaSnap
30MPA,MPW015-071
Pg 1
8-17
Replaces: 30MP-3T
®
Page
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Related Manuals for Carrier AquaSnap 30MPA Series
Summary of Contents for Carrier AquaSnap 30MPA Series
- Page 1 ® Carrier Comfort Network Sensors ......... 15 Electronic Expansion Valve (EXV).
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Page 2: Safety Considerations
CONTENTS (cont) WARNING Page Motor Overload Protection ..... . 54 DO NOT USE TORCH to remove any component. System • COPELAND COMPRESSOR MODELS WITH contains oil and refrigerant under pressure. -
Page 3: General
R-22 systems. Do not use R-22 ser- names in text. vice equipment or components on Puron refrigerant equip- ment. If service equipment is not rated for Puron The CCN (Carrier Comfort Network ) point names are also ® refrigerant, equipment damage or personal injury may referenced in the local display tables for users configuring the result. - Page 4 Table 2 — Scrolling Marquee Display Menu Structure* SERVICE TIME OPERATING MODE TEMPERATURES PRESSURES INPUTS OUTPUTS CONFIGURATION ALARMS STATUS TEST POINTS CLOCK MODES Auto Service Pressures Cooling General General Display Time of View of Unit Temperatures Modes Current Test Mode Circuit A Setpoints Inputs...
- Page 5 Timed override is in effect. This is a 1 to 4 hour temporary override of the programmed schedule, forcing unit to Occupied mode. Override can be implemented with unit under Local (Enable) or CCN (Carrier Comfort Network ® ) control. Override expires after each use.
- Page 6 ACCESSORY NAVIGATOR™ DISPLAY MODULE — allows the user to adjust the display contrast. Use the up or The Navigator module provides a mobile user interface to the down arrows to adjust the contrast. The screen’s contrast will ComfortLink control system. The display has up and down change with the adjustment.
- Page 7 YELLOW LED — The MBB has one yellow LED. The module is available as a factory-installed option or as a field- Carrier Comfort Network (CCN) LED will blink during times installed accessory. The EMM module receives 4 to 20 mA of network communication.
- Page 8 Table 6 — Component, Power, and Control Drawings 30MPA,MPW UNIT DESCRIPTION LOCATION Component Arrangement Fig. 2, page 9 Power Wiring Schematic Fig. 3, page 10 Control Wiring Schematic Fig. 4, page 11 Component Arrangement Fig. 2, page 9 Power Wiring Schematic Fig.
- Page 9 a30-5984...
- Page 11 ONLY, NOT TO REPRESENT WIRING ACCSY ACCESSORY ALMR ALARM RELAY AUXILIARY CONTACTOR, COMPRESSOR CIRCUIT BREAKER COMPRESSOR CIRCUIT BREAKER CARRIER COMFORT NETWORK CRANKCASE HEATER CRANKCASE HEATER RELAY CEFT COOLER ENTERING FLUID TEMP CLFT COOLER LEAVING FLUID TEMP CNFS CONDENSER FLOW SWITCH...
- Page 12 RED LED - STATUS GREEN LED - YELLOW LED - LEN (LOCAL EQUIPMENT NETWORK) CCN (CARRIER COMFORT NETWORK) INSTANCE JUMPER CEPL130346-01 STATUS NOTE: Not to scale. Fig. 5 — Main Base Board DIP SWITCH LOCATION OF SERIAL NUMBER STATUS SIO (LEN)
- Page 13 ® Carrier Comfort Network (CCN) Interface — for the signal ground. Use a similar scheme for cables contain- The 30MP chiller units can be connected to the CCN if ing different colored wires.
- Page 14 See Table 11 for switch details. LWT — Leaving Water Temperature MBB — Main Base Board Table 11 — High Pressure Switch Table 8 — Status Inputs CARRIER PART OPENS AT CLOSES AT NUMBER STATUS SWITCH PIN CONNECTION POINT 650 ±...
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Page 15: Sensors
COMPRESSOR RETURN GAS TEMPERATURE SEN- BLK(-) SOR (RGT.A) — This accessory thermistor can be installed in a well located in the suction line. Use Carrier part number TIMED OVERRIDE HH79NZ029. This thermistor is standard for unit sizes 050- BUTTON (SW1) 071. -
Page 16: Energy Management Module
All of the above sensors are 10,000 ohms at 77 F (25 C), Type II thermistors and are connected to the low voltage termi- T-55 SPACE SENSOR nal (LVT). The sensor should be mounted approximately 5 ft (1.5 m) from the floor in an area representing the average tem- perature in the space. -
Page 17: Electronic Expansion Valves (Exv)
SENSOR 1 SENSOR 2 SENSOR 3 SENSOR 4 SPACE TEMPERATURE AVERAGING — 4 SENSOR APPLICATION SENSOR 3 SENSOR 1 SENSOR 2 SENSOR 6 SENSOR 4 SENSOR 5 LEGEND Factory Wiring Field Wiring SENSOR 8 SENSOR 9 SENSOR 7 SPACE TEMPERATURE AVERAGING — 9 SENSOR APPLICATION Fig. -
Page 18: Minutes Off Time
represents the amount of time to elapse before the unit will start If Minutes Off Time is active, the control will indicate Op- its initialization routine. This value can be zero without the erating Mode, Minutes Off Time Active (Operating ... - Page 19 Table 14 — Part Load Data Percent Displacement, Standard Units CAPACITY CAPACITY CONTROL STAGE 30MP UNIT SIZE (% Displacement) (% Displacement) (Run StatusVIEWSTGE) WITHOUT MINIMUM LOAD VALVE WITH MINIMUM LOAD VALVE 50/18* 50/25* 50/34* 33/21* 33/22* 50/40* 44/35* 42/33* 38/31* 44/33* *Minimum Load Valve energized.
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Page 20: Time, Day, And Date
circuit’s capacity is limited and that eventually the circuit may Table 16 lists the required configurations for these settings. shut down. TIME/DATE BROADCAST — The 30MP unit controls have the ability to broadcast the time and date on the network. Many features of the 30MP Time, Day, and Date —... - Page 21 Table 18 — Daylight Savings Required Configurations TIME CLOCK MODE SUBMODE ITEM DISPLAY ITEM DESCRIPTION COMMENT Daylight Savings Start Month Default: 4 (April) STR.M Month Range: 1 to 12 (1=January, 2=February, etc.) Daylight Savings Start Week STR.W Week Default: 1 Range: 1 to 5 Daylight Savings Start Day Default: 7 (Sunday)
- Page 22 Table 19 — Holiday Required Configurations TIME CLOCK MODE SUB- SUBMODE ITEM DISPLAY ITEM DESCRIPTION COMMENT SUBMODE Default: 0 Range: 0 to 12 Holiday Start Month (0=Not Used, 1=January, 2=February, etc.) Example = 1 Default: 0 Range: 0-31 HD.01 Start Day (0=Not Used) Example = 1 Default: 0...
- Page 23 Table 20 — Occupancy Schedule Required Configurations TIME CLOCK MODE SUB- SUBMODE ITEM DISPLAY ITEM DESCRIPTION COMMENT SUBMODE Default: 0 SCH.N Schedule Number XX Range: 0 to 99 Example = 1 Default: 00.00 OCC.1 XX.XX Period Occupied Time Range: 00.00 to 23.59 Example = 06.00 Default: 00.00 UNC.1...
- Page 24 MONDAY TUESDAY WEDNESDAY THURSDAY FRIDAY SATURDAY SUNDAY HOLIDAY 12:00 AM 3:00 AM 6:00 AM 9:00 AM 12:00 PM 3:00 PM 6:00 PM 9:00 PM 12:00 AM LEGEND — Occupied Fig. 15 — Example Schedule CCN Global Schedule — Schedule Numbers, Time Clock interface device, the number of hours requested must be set in ...
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Page 25: Cooling Set Point Select
will be displayed in Time Clock OVR.T (Timed Point switch contacts are open and Cooling Set Point 2 (Set Override Hours) and will count down as the time period pro- Points COOL CSP.2) when they are closed. gresses. - Page 26 Table 24 — Control Methods and Cooling Set Points Occupancy Active Set Control Type CCN Chiller Set Point Select Ice Mode Ice Done Status Dual Set Point State Point (CTRL) CHIL_S_S (CLSP) (ICE.M)* (ICED)* Switch (DUAL) (OCC) (SETP) 0 (Single) —...
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Page 27: Cooler Pump Sequence Of Operation
Navigator must be connected between the two chillers. Connections can be display. made to the CCN screw terminals on LVT. Refer to Carrier ALARM SYSTEM NAME — This variable specifies the Comfort Network ®... - Page 28 Table 25 — Dual Chiller Configuration (Master Chiller Example) SUB-MODE ITEM KEYPAD ENTRY DISPLAY ITEM EXPANSION COMMENTS DISP UNIT OPT1 CTRL CONTROL METHOD ENTER OPT2 CTRL SWITCH DEFAULT 0 ENTER OPT2 ESCAPE CCNA CCN ADDRESS DEFAULT 1 ENTER CCNB CCNB CCN BUS NUMBER DEFAULT 0 ENTER...
- Page 29 Table 25 — Dual Chiller Configuration (Master Chiller Example) (cont) SUB-MODE ITEM KEYPAD ENTRY DISPLAY ITEM EXPANSION COMMENTS RSET LLBL LEAD/LAG BALANCE SELECT CHANGE ACCEPTED ENTER LLBL ESCAPE LLBD LEAD/LAG BALANCE DELTA LLBD LEAD/LAG BALANCE DELTA DEFAULT 168 ENTER LLBD ESCAPE LLDY LAG START DELAY...
- Page 30 Table 26 — Dual Chiller Configuration (Slave Chiller Example) SUB-MODE ITEM KEYPAD ENTRY DISPLAY ITEM EXPANSION COMMENTS DISP UNIT OPT1 CTRL CONTROL METHOD ENTER OPT2 CTRL SWITCH DEFAULT 0 OPT2 ESCAPE CCNA CCNA CCN ADDRESS SCROLLING STOPS ENTER VALUE FLASHES ENTER SELECT 2 (SEE NOTE 2)
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Page 31: Temperature Reset
Both chillers will stop if the Master chiller Enable/Off/ IMPORTANT: Care should be taken when interfacing with Remote Control switch is in the Off position. If the Emergency other control systems due to possible power supply differ- Stop switch is turned off or an alarm is generated on the Master ences: full wave bridge versus half wave rectification. - Page 32 Table 27 — Menu Configuration of 4 to 20 mA Cooling Set Point Control MODE KEYPAD SUB-MODE KEYPAD ITEM ITEM DISPLAY COMMENT (RED LED) ENTRY ENTRY EXPANSION DISP ENTER UNIT OPT1 OPT2 EXV.A CONFIGURATION RSET SLCT ENTER CLSP COOLING SETPOINT SELECT Scrolling Stops ENTER Flashing ‘0’...
- Page 33 Table 30 — Configuring Return Temperature Reset MODE KEYPAD SUB-MODE KEYPAD ITEM ITEM DISPLAY COMMENT (RED LED) ENTRY ENTRY EXPANSION DISP TEST ON/OFF TEST DISPLAY LEDs ENTER ENTER UNIT TYPE UNIT TYPE ENTER OPT1 FLUD COOLER FLUID ENTER OPT2 CTRL CONTROL METHOD ENTER EXV.A...
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Page 34: Demand Limit
EXTERNALLY POWERED DEMAND LIMIT (4 to Demand limit is a feature that allows Demand Limit — 20 mA Controlled) — To configure demand limit for 4 to 20 the unit capacity to be limited during periods of peak energy us- mA control, set the Demand Limit Select (Configura- age. - Page 35 Table 31 — Configuring Demand Limit KEYPAD KEYPAD MODE SUB-MODE ITEM DISPLAY ITEM EXPANSION COMMENT ENTRY ENTRY CONFIGURATION DISP TEST ON/OFF Test Display LEDs ENTER ENTER UNIT TYPE Unit Type ENTER OPT1 FLUD Cooler Fluid ENTER OPT2 CTRL Control Method ENTER CCNA CCN Address...
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Page 36: Digital Scroll Option
A1.TY=YES). To enable the Adjust the oil level as required. See Oil Charge section on minimum load valve, confirm that the digital compressor op- page 45 for Carrier approved oils. tion is disabled and set Minimum Load Valve Select to YES, ... -
Page 37: Pre-Start-Up
Table 34 — Minimum Flow Rates and Minimum Loop Volume — English FLOW RATE PROCESS COOLING OR LOW AMBIENT NORMAL AIR CONDITIONING APPLICATION OPERATION APPLICATION Gal./Ton UNIT SIZE EVAPORATOR CONDENSER Gal./Ton Gal./Min Gal./Min Std Unit HGBP Digital Std Unit HGBP Digital 30MP015 30MP020... -
Page 38: Actual Start-Up
ture agrees with leaving set point (Set Points COOL Table 36 — Preliminary Puron Refrigerant (R-410A) CSP.1) or (Set Points COOL CSP.2), or if reset is Charge, lb (kg) used, with the control point (Run Status VIEW OPERATING CHARGE AMOUNT ... -
Page 39: Check Compressor Oil Level
Values listed are esti- operating at full capacity. mates only. See Add Oil section for Carrier-approved oils. After operating the compressor for a period of time, the oil a. The 30MPA condenserless units are shipped level should be between of the oil sight glass. -
Page 40: Operating Limitations
(below 32 F [0° C] LCWT) for chiller normally requires reduces. If demand limit is used, the unit may temporarily be factory modification. Contact your Carrier representative unable to maintain the desired leaving-fluid temperature be- for applicable LCWT range for standard water-cooled cause of imposed power limitations. -
Page 41: Charging
valve solenoid (if installed), cooler pump, EXV, and remote alarm relay. To use the Service Test mode, the Enable/Off/Re- mote Control switch must be in the OFF position. Use the dis- play keys to enter the mode and display TEST. Press ENTER twice so that OFF flashes. -
Page 42: Exv Troubleshooting Procedure
6 vdc. If it remains constant at a voltage other than 6 vdc or Follow steps EXV Troubleshooting Procedure — shows 0 volts, remove the connector to the valve and recheck. below to diagnose and correct EXV problems. Press and select 0% to close the valve. Check the 4- Check EXV motor operation first. - Page 43 6. Manually depress the valve piston before installing the 36 ft-lb (50 N-m) and then tighten an additional 30 de- motor assembly. This will allow for the lead screw to en- grees as indicated in Fig. 28. gage the piston as the motor is installed. 8.
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Page 44: Compressor Replacement
All models contain Compressor Replacement — Table 41 — Unit Torque Specification, scroll compressors and have two or three compressors. A com- 30MP015-045 pressor is most easily removed from the side of the unit or above, depending on where clearance space was allowed FASTENER RECOMMENDED TORQUE during unit installation. -
Page 45: Water Treatment
PVE FVC32D For sizes 015 and 020, torque is 7 to 10 ft-lb. For sizes Use only Carrier approved compressor oil. Oil should be 030-045, torque is 35 to 50 ft-lb. For sizes 050-071, visible in compressor oil sight glass. An acceptable oil level is torque is 10 to 11 ft-lb. -
Page 46: Check Unit Safeties
Table 14. freeze solution mixture is considered abuse and may impair or otherwise negatively impact the Carrier warranty. PRESSURE RELIEF DEVICES — All units have one pres- sure relief device per circuit located in the liquid line which re- The main base board (MBB) monitors cooler leaving fluid lieves at 210 F (100 C). -
Page 47: Chilled Water Flow Switch
The transducers operate on a 5 vdc supply, which is generated 4. Check for wrong pump motor rotation. Pump must rotate by the main base board (MBB). See Fig. 31 for transducer con- clockwise when viewed from motor end of pump. nections to the J8 connector on the MBB. - Page 48 Table 45 — 5K Thermistor Temperatures (°F) vs. Resistance/Voltage Drop (Voltage Drop for EWT, LWT, RGT, CNDE, CNDL, Dual Chiller, and OAT) VOLTAGE VOLTAGE VOLTAGE TEMP RESISTANCE TEMP RESISTANCE TEMP RESISTANCE DROP DROP DROP (Ohms) (Ohms) (Ohms) 1.982 7,686 0.511 1,190 –25 3.699...
- Page 49 Table 46 — 5K Thermistor Temperatures (°C) vs. Resistance/Voltage Drop (Voltage Drop for EWT, LWT, RGT, CNDE, CNDL, Dual Chiller, and OAT) VOLTAGE VOLTAGE VOLTAGE TEMP RESISTANCE TEMP RESISTANCE TEMP RESISTANCE DROP DROP DROP (Ohms) (Ohms) (Ohms) 1.982 7,855 0.506 1,158 –32 3.705...
- Page 50 Table 47 — 10K Thermistor Temperature (°F) vs. Resistance/Voltage Drop (For SPT) VOLTAGE VOLTAGE VOLTAGE TEMP RESISTANCE TEMP RESISTANCE TEMP RESISTANCE DROP DROP DROP (Ohms) (Ohms) (Ohms) –25 4.758 196,453 2.994 14,925 0.890 2,166 –24 4.750 189,692 2.963 14,549 0.876 2,124 –23 4.741...
- Page 51 Table 48 — 10K Thermistor Temperature (°C) vs. Resistance/Voltage Drop (For SPT) VOLTAGE VOLTAGE VOLTAGE TEMP RESISTANCE TEMP RESISTANCE TEMP RESISTANCE DROP DROP DROP (Ohms) (Ohms) (Ohms) –32 4.762 200,510 3.056 15,714 0.940 2,315 –31 4.748 188,340 3.000 15,000 0.913 2,235 –30 4.733...
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Page 52: Service
4. Package the defective module in the carton of the new • Check chilled water and condenser strainers, clean as module for return to Carrier. necessary. 5. Mount the new module in the unit’s control box using a •... -
Page 53: Troubleshooting
Table 51 — Troubleshooting SYMPTOMS CAUSE REMEDY Compressor Cycles Loss of charge control. Acting erratically. Repair leak and recharge. Off on Loss of Charge Replace control. Low refrigerant charge Add refrigerant. Low suction temperature Raise cooler leaving fluid temperature set point. Compressor Cycles Off on Out Thermistor failure Replace thermistor. -
Page 54: Motor Overload Protection
If there is a command for a compressor to run and there is automatically before the motor protector resets, which may no current, then one of the following safeties or conditions take up to 2 hours. have turned the compressor off: High Discharge Gas Temperature Protection —... - Page 55 Kriwan Motor Protection Module Troubleshooting — Co- reconnected, then the control circuit relay in the module peland models with a “TW” in the electrical code (i.e., is open. Remove the temporary jumper installed in Step ZP182KCE-TWD), have a motor overload system that con- sists of an external Kriwan electronic control module.
- Page 56 Removing the Kriwan motor protection module: 2. Review the DIP switch settings on the CoreSense mod- ule. DIP switch no. 1 should be ON (up position) and all 1. Disconnect and lock out the high voltage and control other DIP switches should be OFF (down position). See voltage supply to the unit.
- Page 57 PTC circuit has exceeded 4500 .. A Code 1 Alert will The CoreSense communications module has field configu- rable DIP switches for addressing and configuring the module. open the M2-M1 contacts. The Alert will reset after 30 The DIP switches should be addressed as shown in Table 52. minutes and the M2-M1 contacts will close if the resis- tance of the motor PTC circuit is below 2750 ..
- Page 58 Table 52 —CoreSense Communication Module DIP Switch Settings COPELAND DIP SWITCH ELECTRICAL CODE “TE” “TW”* *Settings for Kriwan retrofit. See “CoreSense Replacement of Kriwan Motor Protection Module” on page 55. Table 53 — CoreSense Communication Module LED Flash Codes FAULT CODE TROUBLESHOOTING LED STATUS FAULT CONDITION...
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Page 59: Alarms And Alerts
Troubleshooting procedures described for the Kriwan mod- 2. Check the thermistor protection chain located in the com- ule section (page 55) are applicable to the CoreSense commu- pressor as follows: nication module. a. De-energize control circuit and module power. BITZER PROTECTION MODULE —... - Page 60 Table 54 — Alarm and Alert Codes ALARM/ ALARM WHY WAS THIS ACTION TAKEN RESET PROBABLE ALERT DESCRIPTION ALARM BY CONTROL METHOD CAUSE CODE ALERT GENERATED? Circuit A Compressor Two compressors on circuit See applicable compressor A048 Alarm Circuit shut down Manual Availability Alarm failed...
- Page 61 Table 54 — Alarm and Alert Codes (cont) ALARM/ ALARM WHY WAS THIS ACTION TAKEN RESET PROBABLE ALERT DESCRIPTION ALARM BY CONTROL METHOD CAUSE CODE ALERT GENERATED? Mode 7 caused the com- Faulty expansion valve, low pressor to unload 3 consecu- refrigerant charge, plugged Circuit A Low Cooler A116...
- Page 62 Table 54 — Alarm and Alert Codes (cont) ALARM/ ALARM WHY WAS THIS ACTION TAKEN RESET PROBABLE ALERT DESCRIPTION ALARM BY CONTROL METHOD CAUSE CODE ALERT GENERATED? Demand limit function If configured with EMM and disabled. Chiller Faulty signal 4 to 20 mA Demand T177 Alert input less than 2 mA or...
- Page 63 LEGEND — Carrier Comfort Network — Current Sensor Board — Chiller System Manager EEPROM — Electronic Eraseable Programmable Read Only Memory — Energy Management Module — Entering Fluid Temperature — Electronic Expansion Valve —...
- Page 64 T063 (Condenser Entering Thermistor Failure) — If the sen- sor reading is outside the range of –40 to 240 F (–40 to 116 C) IMPORTANT: Prolonged operation in the wrong direction then the alert will occur. The cause of the alert is usually a can damage the compressor.
- Page 65 A114 (Circuit A Low Superheat) — Alarm code 114 occurs For all 30MPW050-071 standard units: The normally when the superheat of a circuit is less than 5 F (2.8 C) for 5 closed contacts in the switches are calibrated to open at 558 ± continuous minutes.
- Page 66 SST (F) LEGEND a30-4969 Saturated Condensing Temperature SCT — Saturated Suction Temperature — Fig. 43 — Operating Envelope for R-410A Compressor, 30MP015-045 Units SST (F) a30-5978 LEGEND Saturated Condensing Temperature SCT — Saturated Suction Temperature — Fig. 44 — Operating Envelope for R410-A Compressor, 30MPA,MPW050-071 High Condensing Units...
- Page 67 SST (F) a30-5979 LEGEND Saturated Condensing Temperature SCT — Saturated Suction Temperature — Fig. 45 — Operating Envelope for R410-A Compressor, 30MPW050-071 Units The example below lists sample suction pressures of a starting circuit. Figures 46 and 47 show reverse rotation detection for A133 (Circuit A Low Suction Pressure) —...
- Page 68 A151 — Illegal Configuration Alarm Criteria for Trip: This alarm is indicated when an illegal con- figuration has been entered. There are several different configuration alarms. When expanding the alarm, the control will indicate which configuration is incorrect. For example, if the wrong size is configured, the A151 expansion will indicate “ILLEGAL CONFIG - INVALID UNIT SIZE.”...
- Page 69 MUST BE 3 OR HIGHER The -03 indicates Revision 03. Check the part number of the AUX Board. It should have the Carrier Part Number 32GB500442EE (UTEC Part Number CEPL130567-03). This board is required for the digital AUX BOARD SHOULD BE AUX1, NOT AUX2 compressor output as well as the Motormaster drive signal.
- Page 70 T203 (Loss of Communication with the Slave Chiller Alert) higher than it was 1 minute before the current reading. The — This alert will be generated if Dual Chiller Control is en- LCWT is a delta temperature, not an absolute value. The alert abled, LLEN=ENBL Lead/Lag Chiller Enable (Configura- will automatically reset when the leaving water temperature is tion...
- Page 71 P221 (Condenser Pump Interlock Opened During Normal T302 (Strainer Blowdown Scheduled Maintenance Due) — Operation Pre-alarm) This alert is generated when the S.T.DN Strainer Service Countdown (Run Status PM) has expired. Be sure date is A221 (Condenser Pump Interlock Opened During Normal →...
- Page 72 APPENDIX A — LOCAL DISPLAY TABLES Run Status Mode and Sub-Mode Directory ITEM EXPANSION RANGE UNITS CCN POINT COMMENT VIEW AUTO VIEW OF RUN STATUS Entering Fluid Temp xxx.x °F Leaving Fluid Temp xxx.x °F SETP Active Setpoint xxx.x °F ...
- Page 73 APPENDIX A — LOCAL DISPLAY TABLES (cont) Service Test Mode and Sub-Mode Directory ITEM EXPANSION RANGE UNITS CCN POINT COMMENT TEST SERVICE TEST MODE OFF/ON MAN_CTRL To enable Service Test mode, move Enable/Off/ Remote control switch to OFF. Change TEST to ON.
- Page 74 APPENDIX A — LOCAL DISPLAY TABLES (cont) Temperature Mode and Sub-Mode Directory ITEM EXPANSION UNITS CCN POINT COMMENT UNIT ENT AND LEAVE UNIT TEMPS CEWT Cooler Entering Fluid xxx.x °F COOL_EWT CLWT Cooler Leaving Fluid xxx.x °F COOL_LWT ...
- Page 75 APPENDIX A — LOCAL DISPLAY TABLES (cont) Outputs Mode and Sub-Mode Directory (cont) ITEM EXPANSION UNITS CCN POINT COMMENT CIR.A OUTPUTS CIRCUIT A CC.A1 Compressor A1 Relay OFF/ON K_A1_RLY D.PER Compressor A1 Load Percent OFF/ON DIGITALP CC.A2 Compressor A2 Relay OFF/ON K_A2_RLY...
- Page 76 APPENDIX A — LOCAL DISPLAY TABLES (cont) Configuration Mode and Sub-Mode Directory (cont) ITEM EXPANSION RANGE UNITS CCN POINT DEFAULT EXV.A CIR A EXV CONFIGURATION EXV.L EXV Opening at Low LWT 0 to 50% LWT.L LWT for EXV Min Opening 20 to 40 F XX°...
- Page 77 APPENDIX A — LOCAL DISPLAY TABLES (cont) Configuration Mode and Sub-Mode Directory (cont) ITEM EXPANSION RANGE UNITS CCN POINT DEFAULT SLCT SETPOINT AND RAMP LOAD CLSP 0 = Single CLSP_TYP 0 = Single Cooling Set Point Select 1 = Dual Switch 2 = Dual CCN Occupied 3 = 4 to 20 mA Input...
- Page 78 APPENDIX A — LOCAL DISPLAY TABLES (cont) Time Clock Mode and Sub-Mode Directory (cont) ITEM EXPANSION RANGE UNITS CCN POINT DEFAULT HOL.L LOCAL HOLIDAY SCHEDULES HD.11 HOLIDAY SCHEDULE 11 HD.11 Holiday Start Month 0 to 12 HOLMON11 ...
- Page 79 APPENDIX A — LOCAL DISPLAY TABLES (cont) Time Clock Mode and Sub-Mode Directory (cont) ITEM EXPANSION RANGE UNITS CCN POINT DEFAULT SCH.L LOCAL OCCUPANCY SCHEDULE PER.1 OCCUPANCY PERIOD 1 PER.1 OCC.1 Period Occupied Time 0 to 6144 XX:XX PER1OCC ...
- Page 80 APPENDIX A — LOCAL DISPLAY TABLES (cont) Time Clock Mode and Sub-Mode Directory (cont) ITEM EXPANSION RANGE UNITS CCN POINT DEFAULT SCH.L (cont) LOCAL OCCUPANCY SCHEDULE PER.8 OCCUPANCY PERIOD 8 PER.8 OCC.8 Period Occupied Time 0 to 6144 XX:XX PER8OCC ...
- Page 81 APPENDIX A — LOCAL DISPLAY TABLES (cont) Alarms Mode and Sub-Mode Directory ITEM EXPANSION RANGE UNITS CCN POINT COMMENT CRNT CURRENTLY ACTIVE ALARMS AA01 AA02 AA03 AA04 AA05 AA06 AA07 AA08 AA09 ...
- Page 82 APPENDIX B — CCN TABLES CCN DISPLAY TABLES TABLE DISPLAY NAME RANGE UNITS POINT NAME WRITE STATUS A-UNIT GENERAL UNIT PARAMETERS Control Mode 10-char ASCII STAT Occupied No/Yes CCN Chiller Stop/Start CHIL_S_S forcible Alarm State 6-char ASCII Active Demand Limit DEM_LIM forcible Override Modes in Effect...
- Page 83 APPENDIX B — CCN TABLES (cont) CCN MAINTENANCE TABLES TABLE DISPLAY NAME RANGE UNITS POINT NAME WRITE STATUS EXVA_TAB EXVA Position in Steps NNNNNN steps EXVAPOSS EXVA Position in Percent NNNN.nn EXVAPOSP EXVA Commanded Steps NNNNNN steps EXVACMDS EXVA Run Status EXVASTAT EXVA Write Command Off/On...
- Page 84 APPENDIX B — CCN TABLES (cont) CCN MAINTENANCE TABLES (cont) TABLE DISPLAY NAME RANGE UNITS POINT NAME WRITE STATUS ALARMS Active Alarm #1 4-char ASCII ALARM01C Active Alarm #2 4-char ASCII ALARM02C Active Alarm #3 4-char ASCII ALARM03C Active Alarm #4 4-char ASCII ALARM04C Active Alarm #5...
- Page 85 APPENDIX B — CCN TABLES (cont) CCN MAINTENANCE TABLES (cont) TABLE DISPLAY NAME RANGE UNITS POINT NAME WRITE STATUS RUNTEST Percent Total Capacity CAPA_T Percent Available Cap. CAPA_A Discharge Pressure NNN.n PSIG DP_A Suction Pressure NNN.n PSIG SP_A Saturated Condensing Tmp NNN.n degF TMP_SCTA...
- Page 86 APPENDIX B — CCN TABLES (cont) CCN CONFIGURATION TABLES (cont) TABLE DISPLAY NAME RANGE UNITS POINT NAME DEFAULT OPTIONS2 OPTIONS 2 CONFIGURATION Control Method CONTROL Loading Sequence Select SEQ_TYPE Lead/Lag Circuit Select LEAD_TYP Cooling Setpoint Select CLSP_TYP Ramp Load Select Disable/Enable RAMP_EBL Enable...
- Page 87 APPENDIX B — CCN TABLES (cont) CCN SERVICE TABLES TABLE DISPLAY NAME RANGE UNITS POINT NAME DEFAULT SERVICE SERVICE Brine Freeze Point NNN.n degF BRN_FRZ 34.0 COMPRESSOR ENABLE Enable Compressor A1 Disable/Enable ENABLEA1 Unit Dependent Enable Compressor A2 Disable/Enable ENABLEA2 Unit Dependent Enable Compressor A3 Disable/Enable...
- Page 88 APPENDIX C — BACNET COMMUNICATION OPTION The following section is used to configure the UPC Open con- troller which is used when the BACnet* communication option is selected. The UPC Open controller is mounted in the 10's main control box per unit components arrangement diagrams. TO ADDRESS THE UPC OPEN CONTROLLER —...
- Page 89 Controller on a network segment to add bias and prevent signal The example in Fig. C shows the BAS Port DIP Switches set for 76.8k (Carrier default) and MS/TP. distortions due to echoing. See Fig. A, D, and E. For Multi- Chiller Controller only need BT485 on the end.
- Page 90 APPENDIX C — BACNET COMMUNICATION OPTION (cont) Fig. E — BT485 Terminator Installation To install a BT485 terminator, push the BT485 terminator temperature rating specifications list two acceptable alterna- on to the BT485 connector located near the BACnet connector. tives. The Halar* specification has a higher temperature rating and a tougher outer jacket than the SmokeGard†...
- Page 91 APPENDIX C — BACNET COMMUNICATION OPTION (cont) Table D — Open System Wiring Specifications and Recommended Vendors WIRING SPECIFICATIONS RECOMMENDED VENDORS AND PART NUMBERS Connect Air Contractors Wire Type Description Belden RMCORP International Wire and Cable 22 AWG, single twisted shielded pair, low capacitance, CL2P, TC foam FEP, plenum rated.
- Page 92 Open defaults to CCN Acknowledger. If a Chiller Lead/Lag/ IMPORTANT: Power must be ON to the UPC Open con- Standby application is being used, then the Carrier technician troller when replacing the battery, or the date, time, and must change the configuration to only one CCN Acknowledger trend data will be lost.
- Page 93 APPENDIX C — BACNET COMMUNICATION OPTION (cont) Table G — Network Points List CCN POINT READ/ DEFAULT BACNET BACNET POINT DESCRIPTION UNITS RANGE NAME WRITE VALUE OBJECT ID OBJECT NAME 4-20 ma Demand Signal LMT_MA 0-20 AV:36 lmt_ma_1 4-20 ma Reset Signal RST_MA 0-20 AV:33...
- Page 94 APPENDIX C — BACNET COMMUNICATION OPTION (cont) Table G — Network Points List (cont) CCN POINT READ/ DEFAULT BACNET BACNET POINT DESCRIPTION UNITS RANGE NAME WRITE VALUE OBJECT ID OBJECT NAME Dual Setpoint MODE_13 On/Off BV:39 mode_13_1 Dual Setpoint Switch DUAL_IN On/Off BV:29...
- Page 95 APPENDIX D — MAINTENANCE SUMMARY AND LOG SHEETS 30MP Weekly Maintenance Log Plant ___________________________ Unit ID ______________________ Machine Model No. ________________ CHECK ALARMS OPERATOR DATE OIL LEVEL REMARKS / FAULTS INITIALS...
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Page 97: Index
93, 94 Measure of units, changing display, Capacity control, Designations (MBB), Minimum load control, Overrides, Performance Check, Minutes left for start, Carrier Comfort Network (CCN), Replacing, Minutes off time, Tables, Temperature vs. resistance/voltage Motor overload protection, Wiring, drop (5K), 48, 49... - Page 100 Carrier Corporation 2017 Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations. Catalog No. 04-53300170-01 Printed in U.S.A. Form 30MP-4T Pg 100 8-17 Replaces: 30MP-3T...
- Page 101 START-UP CHECKLIST FOR 30MP LIQUID CHILLER (Remove and use for job file.) NOTE: To avoid injury to personnel and damage to equipment or property when completing the procedures listed in this start-up checklist, use good judgment, follow safe practices, and adhere to the safety considerations/information as outlined in preceding sections of this Controls, Start-Up, Operation, Service and Trou- bleshooting document.
- Page 102 C. Cooler Loop Freeze Protection (if required) Gallons (liters) added:________________ Piping includes electric tape heaters if piping is exposed to temperatures below freezing? On brine units, has the cooler fluid been properly protected from freezing to at least 15 F ...
- Page 103 (psig difference) x 2.31 = ft of fluid pressure drop =____________ Plot cooler pressure drop on performance data chart (located in Installation Instructions literature) to determine total gpm (l/s) for fresh water systems. For glycol, contact your Carrier representative. Total gpm (l/s) =______________ Unit's rated min gpm (l/s) =___________________...
- Page 104 C. Unit Start-Up (cont) Use arrow/escape keys to illuminate configuration LED. Press ENTER key. Record information below. UNIT (Configuration Settings) SUBMODE ITEM ITEM EXPANSION DISPLAY ENTRY UNIT CONFIGURATION TYPE UNIT TYPE SIZE UNIT SIZE SZA.1 COMPRESSOR A1 SIZE SZA.2 COMPRESSOR A2 SIZE UNIT SZA.3 COMPRESSOR A3 SIZE...
- Page 105 C. Unit Start-Up (cont) Press ESCAPE key to display ‘OPT2’. Press down arrow key to display ‘EXV.A’. Press ENTER key. Record configuration information below. EXV.A (Circuit A EXV Configuration) SUB-MODE ITEM ITEM EXPANSION DISPLAY ENTRY EXV OPENING AT LOW LWT EXV.L LWT FOR EXV MIN OPENING XX°...
- Page 106 C. Unit Start-Up (cont) COMPONENT TEST Use escape/arrow keys to illuminate configuration LED. Press enter to display 'DISP'. press enter again to display 'TEST' followed by 'OFF'. Press enter to stop display at 'OFF' and enter again so 'OFF' display flashes. 'PASS' and 'WORD' will flash if password needs to be entered.
- Page 107 C. Unit Start-Up (cont) ALL UNITS: Measure the following (measure while machine is in a stable operating condition): Check and adjust superheat as required. CIRCUIT A DISCHARGE PRESSURE (DP.A) SUCTION PRESSURE (SP.A) SATURATED CONDENSING TEMPERATURE (SCT.A) SATURATED SUCTION TEMPERATURE (SST.A) DISCHARGE LINE TEMP (D.GAS) SUCTION LINE TEMP E (RGT.A) COOLER ENTERING FLUID (C.EWT)
- Page 108 Carrier Corporation 2017 Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations. Catalog No. 04-53300170-01 Printed in U.S.A. Form 30MP-4T Pg CL-8 8-17 Replaces: 30MP-3T...
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Questions and answers
How to set strainer countdown after finish clean the strainer
To set the strainer countdown after cleaning the strainer on a Carrier AquaSnap 30MPA Series, enter "YES" for the parameter STRN→S.T.MN (Strainer Maint. Done). This action resets the strainer service countdown.
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@Mr. Anderson
@Mr. Anderson thank you for your replay, so I'm already follow your instructions but the light stills blinking maybe need to resetting for next strainers maintenance. So how to set it ?
Anybody know how to stop LED alarm T302 blinking after finish reset ST.D.M
To stop the LED alarm T302 from blinking on a Carrier AquaSnap 30MPA Series after resetting ST.D.M (Strainer Maintenance Done), follow these steps:
1. Set ST.D.M (Run Status→PM) to YES to indicate that strainer maintenance has been completed.
2. Ensure the date and time are correctly set (Month, Day, Year).
3. Reset the alert.
Once these steps are completed, the T302 alarm should stop blinking.
This answer is automatically generated
@Mr. Anderson all correct and still blinking, even I reset from alarm RCRN and ST.D.M but same