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Trane 4TWL9048A1000A Service Facts
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Trane 4TWL9048A1000A Service Facts

Trane 4TWL9048A1000A Service Facts

Side discharge variable speed hp
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Service Facts
Side Discharge Variable Speed HP
For coastal applications where units are installed within one (1) mile of salt water, epoxy coated models are recommended.
These models have an 8 week lead time after order.
4TWL9048A1000A
Only qualified personnel should install and service the equipment. The installation, starting up, and servicing of heating, ventilating,
and air-conditioning equipment can be hazardous and requires specific knowledge and training. Improperly installed, adjusted or
altered equipment by an unqualified person could result in death or serious injury. When working on the equipment, observe all pre-
cautions in the literature and on the tags, stickers, and labels that are attached to the equipment.
March 2020
Epoxy Coated Model
4TWL9048A1COTA
SAFETY WARNING
4TWL9048A-SF-1C-EN
Note: "Graphics in this document are for representation only.
Actual model may differ in appearance."

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Summary of Contents for Trane 4TWL9048A1000A

  • Page 1 For coastal applications where units are installed within one (1) mile of salt water, epoxy coated models are recommended. These models have an 8 week lead time after order. Epoxy Coated Model 4TWL9048A1000A 4TWL9048A1COTA Note: “Graphics in this document are for representation only.
  • Page 2 Safety Section-VSPD Side Discharge C C A A U U T T I I O O N N I I m m p p o o r r t t a a n n t t — This document contains a wiring diagram and service information.
  • Page 3 Table 1. Operating Range N N o o t t e e : : See AHRI directory for approved indoor and outdoor model combinations. Only Trane coils and air handlers/furnaces are approved for use with variable speed outdoor units.

  • Page 4: Product Specifications

    Product Specifications 4TWL9048A-SF-1C-EN...
  • Page 5 OD Ambient Trane has always recommended installing Trane 6. Run the system using the “ “ C C h h a a r r g g i i n n g g M M o o d d e e - - approved matched indoor and outdoor systems.
  • Page 6 Subcool Charging Correction Charts — Cooling Mode 4.0 TON SUBCOOL CHARGING CHART CORRECTIONS TABLE (FOR LINE LENGTH AND RISE) Add 2° Add 1° Add 1° Use Design Subcooling 80 90 100 110 120 130 140 150 TOTAL REFRIGERANT LINE LENGTH (FEET) Refrigerant Charging Chart 4TWL9048A-SF-1C-EN...
  • Page 7 S S u u b b c c o o o o l l C C h h a a r r g g i i n n g g C C o o r r r r e e c c t t i i o o n n C C h h a a r r t t s s — — C C o o o o l l i i n n g g M M o o d d e e Weigh-In Method for Charging 4TWL9048A-SF-1C-EN...
  • Page 8 Wiring 4TWL9048A-SF-1C-EN...
  • Page 9 Integrated Variable Speed Control Drive External Outdoor Temperature Latching Switchover Valve (Op onal Accessory BAYSEN01ATEMPA) 18 pin connector Force Defrost Personality Module F DFT Header (PM) Status/ Field Connec on Input COMM D- Data R- 24 VAC Hot* Lights C- Common *Only required for Load Shed External CDA Data Port Monitor tool...

  • Page 10: Sequence Of Operation

    Sequence of Operation C C o o n n t t r r o o l l O O p p e e r r a a t t i i o o n n a a l l O O v v e e r r v v i i e e w w speed and hold steady for a minimum dwell period to ensure proper oil return.
  • Page 11 S S e e q q u u e e n n c c e e o o f f O O p p e e r r a a t t i i o o n n Heat pumps are also equipped with an Electronic override of 15 minutes has lapsed.
  • Page 12 Defrost Control (HP Only) D D e e m m a a n n d d D D e e f f r r o o s s t t N N O O T T E E S S : : F F o o r r c c e e d d D D e e f f r r o o s s t t The demand defrost control measures heat pump 1.
  • Page 13 SENSORS Compressor Discharge Line Temperature Sensor This table shows the corresponding voltage, resistance and temperature readings for the Discharge Temperature Sensor when measured across pins 1 and 10. The power source for the Discharge Temperature Sensor is 3.2VDC. Figure 3. Discharge Temperature Sensor A working Compressor Discharge Temperature Sensor is required for: •...
  • Page 14 S S E E N N S S O O R R S S Ambient Temperature Sensor Figure 4. Ambient Temperature Sensor (ODS) These tables show the corresponding voltage, resistance and temperature readings for the Ambient, Temperature Sensor when measured across pins 5 & The power source for the Ambient, Coil and Suction Temperature sensors is 3.2VDC The Ambient Temperature Sensor control has an NTC...
  • Page 15 S S E E N N S S O O R R S S Coil and Suction Temperature The Coil Temperature Sensor control has an NTC thermistor input for sensing the coil temperature. This Sensor reading is used by the defrost algorithm on heat pump units.
  • Page 16 S S E E N N S S O O R R S S Suction Line Pressure Figure 7. Suction Pressure Transducer Pins 7 (White) & 8 (Black) Transducer This table shows the corresponding voltage and pressure readings for the Suction Line Pressure Transducer when measured across pins 7 and 8.
  • Page 17 Variable Speed Alert Codes 4TWL9048A-SF-1C-EN...
  • Page 18 V V a a r r i i a a b b l l e e S S p p e e e e d d A A l l e e r r t t C C o o d d e e s s 4TWL9048A-SF-1C-EN...
  • Page 19 V V a a r r i i a a b b l l e e S S p p e e e e d d A A l l e e r r t t C C o o d d e e s s 4TWL9048A-SF-1C-EN...
  • Page 20 V V a a r r i i a a b b l l e e S S p p e e e e d d A A l l e e r r t t C C o o d d e e s s 4TWL9048A-SF-1C-EN...
  • Page 21 V V a a r r i i a a b b l l e e S S p p e e e e d d A A l l e e r r t t C C o o d d e e s s 4TWL9048A-SF-1C-EN...
  • Page 22 V V a a r r i i a a b b l l e e S S p p e e e e d d A A l l e e r r t t C C o o d d e e s s 4TWL9048A-SF-1C-EN...
  • Page 23 V V a a r r i i a a b b l l e e S S p p e e e e d d A A l l e e r r t t C C o o d d e e s s 4TWL9048A-SF-1C-EN...
  • Page 24 V V a a r r i i a a b b l l e e S S p p e e e e d d A A l l e e r r t t C C o o d d e e s s 4TWL9048A-SF-1C-EN...
  • Page 25 V V a a r r i i a a b b l l e e S S p p e e e e d d A A l l e e r r t t C C o o d d e e s s 4TWL9048A-SF-1C-EN...
  • Page 26 V V a a r r i i a a b b l l e e S S p p e e e e d d A A l l e e r r t t C C o o d d e e s s 4TWL9048A-SF-1C-EN...
  • Page 27 V V a a r r i i a a b b l l e e S S p p e e e e d d A A l l e e r r t t C C o o d d e e s s 4TWL9048A-SF-1C-EN...
  • Page 28 V V a a r r i i a a b b l l e e S S p p e e e e d d A A l l e e r r t t C C o o d d e e s s 4TWL9048A-SF-1C-EN...
  • Page 29 V V a a r r i i a a b b l l e e S S p p e e e e d d A A l l e e r r t t C C o o d d e e s s 4TWL9048A-SF-1C-EN...
  • Page 30 V V a a r r i i a a b b l l e e S S p p e e e e d d A A l l e e r r t t C C o o d d e e s s Refrigeration Circuits Figure 8.

  • Page 31: Sound Pressure Level

    Sound Pressure Level Outdoor Unit Reflective Surface 3’ ft (Back wall) 5’ ft Table 4. 4.0 Ton Heating Table 5. 4.0 Ton Cooling N N o o t t e e s s : : • Measuring place: Hemi-Anechoic chamber •...

  • Page 32: Load Shedding

    Load Shedding E E x x t t e e r r n n a a l l S S h h u u t t d d o o w w n n contacts will enable compressor operation. The Factory Default configuration is INACTIVE.

  • Page 33: Communication Loss

    Communication Loss No AOC / MOC (Drive) Lights Unplug 18-Pin Verify 13.8 VDC Harness, LSOV, Check Line MOC / Drive on Pins 1 & 6 in and EEV Stepper incoming lights on? A0C / MOC from A0C and voltage Harness recheck.
  • Page 34 Breaker Trip Procedure Breaker Trip Procedure WARNING · Verify wiring · Verify sensor readings · Check breaker · 400 VOLTS Check breaker size · ELECTRICAL Check for GFCI on circuit HAZARD · Replace breaker if necessary Failure to follow this warning could result in personal injury or death.
  • Page 35 Start Compressor Drive Current Failures Any Error 177 within 30 seconds of operation B reaker T rip O ccurs Inspect term inal connector to com pressor for open circuits G o to B reaker T rip P rocedure WARNING W as a repair of connection required? 400 VOLTS ELECTRICAL...
  • Page 36 Compressor Verification: Parameters Compressor Verification: Parameters In CDA menu under unit controls verify PM tonnage matches model number Does PM match Y es model? Replace PM In CDA menu under unit controls verify that compressor size matches compressor model number (DRV COMP SIZE) WARNING Y es 400 VOLTS...
  • Page 37 Run Drive Diagnostic Test Run Drive Diagnostic Test Drive Test: Test Response 1: Passed: No Fault Passed? No Fault Found Test Response 2: Test Response 4: Test Response 5: Test Response 3: Drive HW Cmpr Lead/Winding Compressor Rotor Cmpr Lead/Winding Malfunction (In- Open Malfunction...
  • Page 38 Compressor Verification: Short Compressor Verification:Short WARNING 400 VOLTS Disconnect compressor wiring ELECTRICAL HAZARD Failure to follow this harness from drive. warning could result in personal injury or death. WAIT TWO (2) MINUTES after disconnecting power prior to touching electrical components as they may hold a dangerous charge of 400VDC, then verify DC Run Drive Diagnostic Test...
  • Page 39 Compressor Verification: Open WARNING Compressor Verification: Open 400 VOLTS ELECTRICAL HAZARD Failure to follow this warning could result in personal injury or death. WAIT TWO (2) MINUTES after disconnecting power prior to touching electrical components as they may hold a dangerous charge Disconnect compressor wire of 400VDC, then verify DC For reference: resistance...
  • Page 40 Inverter Temperature Excessive Inverter Excessive Rectifier Excessive Rectifier Excessive Inverter Temperature Temperature Temperature De-rate Temperature De-rate Shutdown Shutdown WARNING 400 VOLTS ELECTRICAL Check system condition: outdoor HAZARD Failure to follow this temp sensor, suction temp, suction warning could result in pressure inverter temp, rectifier personal injury or death.
  • Page 41 Electronic Expansion Valve (EEV) Troubleshooting Flowchart Using the CDA, verify the following: 1. SYSTEM STATUS is HEATING in the home screen. System is pumping 2. SOV position is HEAT and EEV position is greater than step 56 down in heat mode in the Monitor menu.
  • Page 42 Communicating Display Assembly (CDA) NAVIGATION • To enter and exit Technician Menus, press the Up/Down buttons simultaneously for 5 seconds. • To return to the Home Screen, press the Up/Down buttons SYSTEM STATUS simultaneously for 5 seconds. • To return to the top level of any menu, press the Left/Right buttons XXXXXXXXXXXXXXXX simultaneously for 5 seconds.
  • Page 43 C C o o m m m m u u n n i i c c a a t t i i n n g g D D i i s s p p l l a a y y A A s s s s e e m m b b l l y y ( ( C C D D A A ) ) Home Screen—...
  • Page 44 Technician Monitor Menu CONTROL MONITOR MENU ALERT MENU MENU Cycling stage will display “Stage 1” SYSTEM COMP DEMAND Modulating stage will display % Demand XXX% COMP SPEED XXX RPM SOV POSITION HEAT/COOL LOAD SHED AMB TEMP ODS (Ambient Temperature Sensor) XXX F EXT OD TEMP XXX F...
  • Page 45 T T e e c c h h n n i i c c i i a a n n M M o o n n i i t t o o r r M M e e n n u u Continued from previous page SYSTEM MENU MONITOR MENU...
  • Page 46 Technician Alert Menu MONITOR ACTIVE ALERTS ALERT HISTORY MENU Note: Display NONE on line 2 if there are no alerts. ALERT 1 ALERT 1 <Alert short Text> <time since occurrence> ALERT # ALERT # <Alert short Text> <time since occurrence> ALERT # ALERT # <Alert short Text>...

  • Page 47: Config Menu

    Technician Alert History Menu ACTIVE CONFIG ALERT HISTORY ALERTS MENU Note: Display NONE on line 2 if there are no alerts. ALERT 1 ALERT 1 ALERT 1 <Alert short Text> XXX Count <time since occurrence> ALERT # ALERT # ALERT # <Alert short Text>...
  • Page 48 Technician Configuration Menu S S y y s s t t e e m m p p a a r r a a m m e e t t e e r r s s a a n n d d o o p p t t i i o o n n s s a a r r e e r r e e p p o o r r t t e e d d a a n n d d s s e e t t f f r r o o m m t t h h e e C C o o n n f f i i g g M M e e n n u u .
  • Page 49 Technician Control Menu Forced Defrost, EEV, LSOV, Evacuation, Run Drive and N N o o t t e e : : If system is in Lockout, Unit Tests are not Run Outdoor Fan tests are initiated and performed available. from the Technician Control Menu. Drive Test Notes CONFIG MONITOR...
  • Page 50 T T e e c c h h n n i i c c i i a a n n C C o o n n t t r r o o l l M M e e n n u u NOTES: Forced Defrost Continued from previous page 1.
  • Page 51 TECH CONTROL — Charge/Check Charge Modes Charge / Check Charge Notes Introduced with AOC Software Version 2, Fall of 2014. After initiating the Charging or Check Charge Mode from the comfort CONFIG MONITOR CONTROL MENU control, the OD unit CDA enters the Control Menu and the MENU MENU corresponding screen (ok to charge for the cooling test mode &...

  • Page 52: Pressure Curves

    Pressure Curves I I m m p p o o r r t t a a n n t t : : VARIABLE SPEED OUTDOOR UNITS N N o o t t e e : : CURVES ONLY VALID DURING: REQUIRE THE INDOOR U NIT BE Charging mode —...
  • Page 53 Warranty Claim Process Integrated Variable Speed Control (Drive) W W h h e e n n a a t t e e c c h h n n i i c c i i a a n n c c a a l l l l s s f f o o r r p p r r e e - - a a u u t t h h o o r r i i z z a a t t i i o o n n Servicing Dealers must obtain a pre-authorization number from a Field Service Representative (FSR) or a f f r r o o m m t t h h e e j j o o b b s s i i t t e e : :...
  • Page 54 The AHRI Certified mark indicates Trane U.S. Inc. participation in the AHRI Certification program. For verification of individual certified products, go to ahridirectory.org. Trane has a policy of continuous data improvement and it reserves the right to change design and specifications without notice. We are committed to using environmentally conscious print practices.

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