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Trane Technologies ComfortLink II 4TTV0024A1000C, Service Facts, Page: 46 / 72

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Trane Technologies ComfortLink II 4TTV0024A1000C Service Facts Download Page 46

46

4T-V0-SF-1Q-EN

Compressor Verification: Short

Compressor Verification:Short

Disconnect compressor wiring

harness from drive.

Result?

Connect harness to drive and disconnect

compressor from harness.

Result?

Verify compressor shorted

with multimeter: pin to shell

Run Drive Diagnostic Test

Run Drive Diagnostic Test

Scan to see a 
video on Shorted 
Compressor 
Windings 

Open

Short

Replace

Drive

Open

Short

Replace

Compressor

Repair or Replace

Harness

Scan to see a 
video on how to 
replace the IVSC

+VDC

-VDC

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 
of 400VDC, then verify DC 
Voltage is less than 42 VDC 
at inverter test points 
lVDC and -VDC 
before servicing board.

400 VOLTS

WARNING

Summary of Contents for ComfortLink II 4TTV0024A1000C

Page 1: ...h or serious injury When working on the equipment observe all precautions in the literature and on the tags stickers and labels that are attached to the equipment June 2020 4 4T T V V0 0 S SF F 1 1Q Q...

Page 2: ...CO ON NT TA AI IN NS S R RE EF FR RI IG GE ER RA AN NT T F Fa ai il lu ur re e t to o f fo ol ll lo ow w p pr ro op pe er r p pr ro oc ce ed du ur re es s c ca an n r re es su ul lt t i in n p pe er r...

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Page 7: ...or added the system must be operated for a minimum of 20 minutes to stabilize before accurate measurements can be made 6 Run the system using the C Ch ha ar rg gi in ng g M Mo od de e C Co oo ol li i...

Page 8: ...0 20 50 40 30 25 15 10 0 REFRIGERANT LINE LIFT FEET Figure 3 Subcool Charging Corrections 4 0 Ton 4 0TON SUBCOOL CHARGING CHART CORRECTIONSTABLE FOR LINE LENGTH AND RISE TOTALREFRIGERANTLINELENGTH FEE...

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Page 10: ...10 4T V0 SF 1Q EN Wiring D157619P04 2 3 1 1 3 2...

Page 11: ...PSC not used PWM Latching Switchover Valve LSOV 12VDC Pulse Condensor Fan Speed Signal Pulse Width Modulation PWM High Voltage to Condensor Fan Motor External Outdoor Temperature Sensor Optional Acces...

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Page 13: ...r stage demand the outdoor system will start and ramp to a target startup speed and hold steady for a minimum dwell period to ensure proper oil return This dwell period will typically last for 1 minut...

Page 14: ...g defrost The Defrost Mode will be terminated after the OD coil temperature reaches 47 F or the maximum time override of 15 minutes has lapsed At Defrost termination the compressor will be commanded t...

Page 15: ...nce between the outdoor temperature sensor and the coil temperature sensor is called Delta T Defrost can occur once the current Delta T exceeds the Delta T initiate value This adaptive logic assures a...

Page 16: ...Control Board J1 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 A working Compressor Dome Temperature Sensor is required for Protection High Low Temperature Preheating Sump Heat Outdoor EEV Control Dia...

Page 17: ...trol has an NTC thermistor input for sensing the outdoor air temperature and has a nominal resistance of 10k ohms at 75 F The Ambient Temperature is measured across pins 5 and 14 The minimum range req...

Page 18: ...ol Board J1 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 The Suction Temperature Sensor control utilizes an NTC thermistor input for sensing the suction gas temperature The thermistor has a nominal re...

Page 19: ...Transducer Pins 16 White 17 Black 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 A working Liquid Pressure Transducer is required for the following Automatic Charging Diagnostics Charge Level The Liquid...

Page 20: ...16 17 18 A working Suction Pressure Sensor is required for the following Start Up Pressure Limits Low Pressure Loss of Charge Protection Indoor Coil Freeze Protection Outdoor EEV Control Target Super...

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Page 35: ...P EEV OR TXV BI FLOW DRIER INTERNALLY CHECKED ELECTRONIC EXPANSION VALVE DRIVE COOLING LOOP LIQUID LINE DISTRIBUTOR OUTDOOR COIL Figure 14 3 Ton HP 036 and 37 Models INDOOR SECTION OUTDOOR SECTION FIE...

Page 36: ...ED INTER CONNECTING TUBING FIELD CONNECTION INDICATES DIRECTION OF REFRIGERATION FLOW COOLING HEATING PRINTED FROM DRAWING D158073rev01 EEV GAS SENSOR SWITCHOVER VALVE 1 4 FLARE PRESSURE TAP FIELD CON...

Page 37: ...HARGE LINE PRINTED FROM DRAWING D158077 Figure 18 3 Ton A C 036 Model INDOOR SECTION OUTDOOR SECTION FIELD INSTALLED INTER CONNECTING TUBING REFRIGERANT FLOW 1 4 FLARE PRESSURE TAP SUCTION LINE PRESSU...

Page 38: ...GERANT FLOW DISCHARGE LINE PRINTED FROM DRAWING D158075 COMPRESSOR Figure 20 5 Ton A C 060 Models FIELD INSTALLED INTER CONNECTING TUBING INDOOR SECTION OUTDOOR SECTION REFRIGERANT FLOW 1 4 FLARE PRES...

Page 39: ...SSURE TRANSDUCER OUTDOOR COIL DESUPERHEATER COIL FIELD CONNECTION INDOOR COIL HPCO DRIER 1 4 FLARE PRESSURE TAP EXPANSION VALVE FIELD CONNECTION LIQUID LINE DRIVE COOLING LOOP REFRIGERANT FLOW DISCHAR...

Page 40: ...0 950 1050 will provide notification when this feature is ACTIVE The installer will need to apply 24VAC to the R pigtail then route the 24VAC from the Load Shed terminal T3 to a set of Normally Closed...

Page 41: ...oard Is Vsupply between 170 and 253VAC Remove power and isolate all external sensors Disconnect HPCO J1 CDA LSOV EEV and PWM Reapply power LEDs lighting Replace Drive Identify and repair shorted circu...

Page 42: ...Trip Procedure Weak Breaker or Drive Fault 99 chance Drive Yes No Run System at 100 Run OD Fan Test T rip No Fan Motor or Connections or Breaker Yes Verify wiring Check breaker Check breaker size Rep...

Page 43: ...he Compressor Troubleshooting Drive Current Failures Any Error 177 within 30 seconds of operation VDC VDC ELECTRICAL HAZARD Failure to follow this warning could result in personal injury or death WAIT...

Page 44: ...at compressor size matches compressor model number DRV COMP SIZE Yes Replace PM Replace Compressor Scan to see a video on the Compressor Parameters VDC VDC ELECTRICAL HAZARD Failure to follow this war...

Page 45: ...the CDA on the U V W currents One leg will have twice the Manual Procedure Wait 12 hours for pre heat to move liquid refrigerant out of compressor or Scan to see a video on Run Drive Diagnostics Repl...

Page 46: ...a video on Shorted Compressor Windings Open Short Replace Drive Open Short Replace Compressor Repair or Replace Harness Scan to see a video on how to replace the IVSC VDC VDC ELECTRICAL HAZARD Failure...

Page 47: ...rness leads Visually Inspect Connection Points Drive Side Open Connections Good Verify Compressor Windings Open For reference resistance should be 0 4 0 5 Ohmns Scan to see a video on how to replace t...

Page 48: ...ve Failure Cooling Issue Drive Failure or still ambient condition issue Excessive Rectifier Temperature De rate Excessive Rectifier Temperature Shutdown Excessive Inverter Temperature De rate Excessiv...

Page 49: ...tion pressure in heating mode System is low on charge 1 Check charge per Service Facts EEV valve is stuck closed 1 Verify valve operation with the Open Valve Test found in the CDA Control Menu Sensors...

Page 50: ...H ZLWK DXOW QIRUPDWLRQ LI WKHUH LV DQ DFWLYH IDXOW RZ OHYHO IDXOWV GR QRW DSSHDU RQ WKH RPH 6FUHHQ SYSTEM STATUS 1 Auto Scroll Auto Scroll XXXXXXXXXXXXXXXX ALERT 1 Alert short Text ALERT 2 Alert short...

Page 51: ...tion Pressure Sensor LTS Liquid Temp Sensor Future Option LIQ Liquid Pressure Sensor Future Option If LIQ SENSE and LIP PRESSURE are both installed Future Option STS Suction Temp Sensor CTS Coil Temp...

Page 52: ...XXX DRV AMPS W XXX DRV AMPS V XXX DRV AMPS U XXX DRV AMPS AVG RCTFR TEMP XXX F INVERTER TEMP XXX F SYST TIME XXXXXX HRS DFT RUN TIME XXXXXX HRS DFT CYCLE COUNT XXXX HP RUN TIME XXXXXX HRS HTG CYCLE C...

Page 53: ...without the need to cycle power Scan to see a video about the CDA Alert Menu ACTIVE ALERTS ALERT 1 Alert short Text ALERT 1 time since occurrence ALERT Alert short Text ALERT time since occurrence AL...

Page 54: ...RY ALERT 1 Alert short Text ALERT Alert short Text ALERT time since occurrence CLEAR ALERTS PRESS ENTER Enter ARE YOU SURE PRESS ENTER Enter ALERT 1 XXX Count ALERT XXX Count ACTIVE ALERTS CONFIG MENU...

Page 55: ...Blower Delays Notes These Blower Delay values are programmed into the Personaliy Module Cooling off 90 Seconds Heating off 60 Seconds Heating on 30 Seconds EMI Notes Introduced with AOC Software Vers...

Page 56: ...voltage leads are connected and not damaged 4 Confirm motor is receiving a PWM signal by measuring DC Volts at plug J9 on the IVCS High speed fan signal should measure between 15 18 Volts DC 5 Confirm...

Page 57: ...frost During LSOVTEST if a mode change request is received the LSOV test will terminate EEV TEST OPEN 500 EEV TEST OPEN XXX EEV TEST CLOSE 500 EEV TEST CLOSE XXX Heat Pump Only EEVTest Mode Notes 1 Th...

Page 58: ...inutes then the screen immediately changes to the appropriate screen OK to charge in cooling test mode and OK to check in heating test mode The new screen will populate a countdown timer that counts d...

Page 59: ...D HDW 0LQ HDW 0D 7 9 RRO 0LQ RRO 0D HDW 0LQ HDW 0D 7 9 RRO 0LQ RRO 0D HDW 0LQ HDW 0D 127 5DWHG LQ DFFRUGDQFH ZLWK 5 6WDQGDUG 0RGHO 0RGH 6SHHG 6RXQG 3UHVVXUH LQ G DW DW DW DW 7 9 RRO 0LQ RRO 0D HDW 0LQ...

Page 60: ...RRO 0D 779 RRO 0LQ RRO 0D 779 RRO 0LQ RRO 0D 779 RRO 0LQ RRO 0D 127 5DWHG LQ DFFRUGDQFH ZLWK 5 6WDQGDUG 0RGHO 0RGH 6SHHG 6RXQG 3UHVVXUH LQ G DW DW DW DW 779 RRO 0LQ RRO 0D 779 RRO 0LQ RRO 0D 779 RRO...

Page 61: ...OTTOM 80 70 AND 60 DEG F INDOOR ENTERING DRY BULB CURVES TOP TO BOTTOM 80 70 AND 60 DEG F COOLING PERFORMANCE CAN BE CHECKED WHEN THE OUTDOOR TEMP IS ABOVE 55F WHEN USING PRESSURE CURVES TO VERIFY TYP...

Page 62: ...ORMANCE CAN BE CHECKED WHEN THE OUTDOOR TEMP IS ABOVE 55F WHEN USING PRESSURE CURVES TO VERIFY TYPICAL PERFORMANCE ALWAYS RUN THE SYSTEM WITH ONE OF THE TEST MODES FOUND IN THE 950 850 COMFORT CONTROL...

Page 63: ...CURVES TO VERIFY TYPICAL PERFORMANCE ALWAYS RUN THE SYSTEM WITH ONE OF THE TEST MODES FOUND IN THE 950 850 COMFORT CONTROL CHARGING MODE COOLING OR CHECK CHARGE MODE HEATING TO CHECK COOLING PERFORMAN...

Page 64: ...DEG F COOLING PERFORMANCE CAN BE CHECKED WHEN THE OUTDOOR TEMP IS ABOVE 55F WHEN USING PRESSURE CURVES TO VERIFY TYPICAL PERFORMANCE ALWAYS RUN THE SYSTEM WITH ONE OF THE TEST MODES FOUND IN THE 950 8...

Page 65: ...UN THE SYSTEM WITH ONE OFTHE TEST MODES FOUND INTHE 950 850 COMFORT CONTROL CHARGING MODE COOLING TO CHECK COOLING PERFORMANCE SELECT THE PROPER INDOOR CFM ALLOW PRESSURES TO STABLIZE MEASURE INDOOR W...

Page 66: ...ERSECTION OF OD TEMP ID W B 3 READ LIQUID 4 OR SUCTION 5 PRESSURE IN LEFT COLUMN EXAMPLE FIRST STAGE 1 OUTDOOR TEMP 82 F 2 INDOOR WET BULB 67 F 3 AT INTERSECTION 4 LIQUID PRESSURE 400 CFM IS 295 PSIG...

Page 67: ...RFORMANCE ALWAYS RUN THE SYSTEM WITH ONE OFTHE TEST MODES FOUND INTHE 950 850 COMFORT CONTROL CHARGING MODE COOLING TO CHECK COOLING PERFORMANCE SELECT THE PROPER INDOOR CFM ALLOW PRESSURES TO STABLIZ...

Page 68: ...ORMANCE ALWAYS RUN THE SYSTEM WITH ONE OFTHE TEST MODES FOUND INTHE 950 850 COMFORT CONTROL CHARGING MODE COOLING TO CHECK COOLING PERFORMANCE SELECT THE PROPER INDOOR CFM ALLOW PRESSURES TO STABLIZE...

Page 69: ...ERSECTION OF OD TEMP ID W B 3 READ LIQUID 4 OR SUCTION 5 PRESSURE IN LEFT COLUMN EXAMPLE FIRST STAGE 1 OUTDOOR TEMP 82 F 2 INDOOR WET BULB 67 F 3 AT INTERSECTION 4 LIQUID PRESSURE 400 CFM IS 295 PSIG...

Page 70: ...mfort control Record all Alert texts found on the Communicating Display Assembly CDA Run the Drive Diagnostics found in the Technicians Control Menu of the CDA when possible W Wh he en n a a t te ec c...

Page 71: ...4T V0 SF 1Q EN 71 N No ot te es s...

Page 72: ...I 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...

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