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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 precautions in the
literature and on the tags, stickers, and labels that are attached to the equipment.

April 2014

TAM7-SF-2E-EN

Air Handler — Convertible

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TAM7A0A24H21EA
TAM7A0B30H21EA
TAM7A0C36H31EA
TAM7A0C42H31EA
TAM7A0C48H41EA
TAM7B0C60H51EA

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TAM7A0A24H21SD
TAM7A0B30H21SD
TAM7A0C36H31SD
TAM7A0C42H31SD
TAM7A0C48H41SD
TAM7B0C60H51SC

Scan or click to view
TAM7 Trouble Shooting
Video Library

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e:: “Graphics in this document are for representation only.

Actual model may differ in appearance.”

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e:: For use with BAYEV or BAYW series heaters ONLY

Service Facts

Summary of Contents for TAM7A0A24H21EA

Page 1: ...he literature and on the tags stickers and labels that are attached to the equipment April 2014 TAM7 SF 2E EN Air Handler Convertible B Bl la ac ck k E Ep po ox xy y C Co oi il ls s TAM7A0A24H21EA TAM...

Page 2: ...RI IC CA AL L C CO OM MP PO ON NE EN NT TS S F Fa ai il lu ur re e t to o f fo ol ll lo ow w t th hi is s W Wa ar rn ni in ng g c co ou ul ld d r re es su ul lt t i in n p pr ro op pe er rt ty y d da...

Page 3: ...n w g See Fan Performance Table See Fan Performance Table See Fan Performance Table No Motors H P 1 1 2 1 1 2 1 1 2 Motor Speed RPM Variable ECM Variable ECM Variable ECM Volts Ph Hz 208 230 1 60 208...

Page 4: ...rmance Table See Fan Performance Table No Motors H P 1 1 2 1 3 4 1 1 Motor Speed RPM Variable ECM Variable ECM Variable ECM Volts Ph Hz 208 230 1 60 208 230 1 60 208 230 1 60 F L Amps 3 0 4 2 5 5 FILT...

Page 5: ...TAM7 SF 2E EN 5 Wiring D805038P01Rev00...

Page 6: ...tacts on the AFC will pass 24VAC to the YO terminal providing power to the outdoor unit control circuit 3 R G contacts close on comfort control sending 24VAC to the G terminal of the AFC 4 The AFC mic...

Page 7: ...calls for W2 and or W3 the EHC will communicate to the AFC the required airflow request and energize the additional relays N No ot te e The EHC has lead lag logic built in that energizes the electric...

Page 8: ...ults of all control boards 1 Press and hold the Unit Test Button for 10 12 seconds 2 Release the Unit Test button and wait 5 seconds 3 Cycle 230VAC power to the unit the blower panel can be removed to...

Page 9: ...R74 R89 R25 R18 R19 R10 R9 R8 R3 R2 R5 R7 Q8 Q4 PTC1 MOV1 L2 L3 K1 J3 J6 J9 D36 D35 D34 D1 D22 D29 D25 D24 D7 D4 D2 D28 C57 C54 C56 C51 C49 C48 C47 C52 C43 C42 C36 C35 C34 C31 C30 C29 C13 C7 C3 C2 C1...

Page 10: ...e The OD multiplier in conjunction with the CFM TON can be used to adjust total airflow for your application Example 4 5T x 370 CFM TON 1665 CFM Not an actual OD size Set the S1 3 dip switch for AC o...

Page 11: ...ng Torque and constant CFM modes Set the S2 5 dip switch for the airflow mode AIRFLOW MODE S2 5 TORQUE OFF CONSTANT CFM ON 1 1 1 2 3 4 5 1 2 3 4 5 HP 2 Comp res s or 2 Stag es AC Sys tem OUTDOOR Capa...

Page 12: ...244 971 766 351 255 410 CFM ton CFM Watts 1013 188 1034 244 1045 299 1049 353 1040 400 400 CFM ton CFM Watts 986 1070 170 215 1009 1023 225 236 1022 967 279 255 1026 901 332 270 1019 821 380 280 430...

Page 13: ...6 188 158 958 718 237 165 951 538 285 163 410 CFM ton CFM Watts 1012 106 1025 160 1033 214 1034 2168 1027 318 400 CFM ton CFM Watts 991 1106 100 131 1002 1016 152 156 1009 908 205 174 1010 779 257 182...

Page 14: ...90 1229 116 154 1102 1129 171 178 1114 1024 227 196 1122 916 282 209 1123 805 334 217 420 CFM ton CFM Watts 1234 159 1251 223 1267 288 1275 351 1272 406 390 CFM ton CFM Watts 1145 1285 132 173 1161 11...

Page 15: ...32 350 CFM ton CFM Watts 1208 1340 162 214 1212 1245 224 239 1220 1142 288 257 1224 1028 350 267 1222 901 407 268 380 CFM ton CFM Watts 1308 205 1319 276 1329 346 1331 412 1323 470 370 CFM ton CFM Wat...

Page 16: ...01 1266 402 338 1395 1177 455 346 400 CFM ton CFM Watts 1582 302 1594 382 1598 454 1598 522 1591 581 370 CFM ton CFM Watts 1465 1594 245 301 1476 1516 317 335 1480 1352 446 379 1600 1483 521 450 1475...

Page 17: ...FM ton CFM Watts 1811 411 1826 495 1831 572 1832 643 1827 704 390 CFM ton CFM Watts 1736 1831 413 416 1742 1770 489 454 1744 1703 558 484 1740 1629 620 506 1732 1549 673 518 420 CFM ton CFM Watts 1854...

Page 18: ...zontal left position without Heat Pump TAM7A0B30H21SD TAM7A0B30H21EA Heater Model No No of Circuits 240 Volt 208 Volt Capacity Heater Amps per Circuit Minimum Circuit Ampaci ty Maximum Overload Protec...

Page 19: ...34 6 43 45 Note Motor Amps a MCA and MOP for circuit 1 contains the motor amps TAM7A0C42H31SD TAM7A0C42H31EA Heater Model No No of Circuits 240 Volt 208 Volt Capacity Heater Amps per Circuit Minimum C...

Page 20: ...its 240 Volt 208 Volt Capacity Heater Amps per Circuit Minimum Circuit Ampacity Maximum Overload Protection Capacity Heater Amps per Circuit Minimum Circuit Ampacity Maximum Overload Protection kW BTU...

Page 21: ...Z0048A B 12 TAM7B0C60H51SC TAM7B0C60H51EA 4A6Z0060A 4TWZ0060A 12 Two compressor 2 Stage AC TAM7A0B30H21SD TAM7A0B30H21EA 4A7Z0024A 4TTZ0024A 9 TAM7A0C36H21SD TAM7A0C36H21EA 4A7Z0036A B 4TTZ0036A B 11...

Page 22: ...res s or 2 S tag es AC S ys tem Capa c ity Tons OUTDOOR Torque CFM Ton Coo l Off De lay INDOOR CFM S1 on on S2 R71 D21 L4 D24 C18 R90 C12 D7 D4 R85 R74 C28 D23 C31 D26 R41 R45 R37 X1 Q9 C21 R91 R87 R2...

Page 23: ...Flash per second Stand by or idle Multiple Flash CFM demand 1 flash per 100 cfm Unit LED BLUE DESCRIPTION 1 Flash Normal 1 flash every 4 seconds Rapid Communication Busy Error 2 flashes per second SO...

Page 24: ...shorted unplugged wiring harness problem Verify 5VDC output from control 4 Gas Temperature Sensor GT input out of range a Sensor open shorted unplugged wiring harness problem Verify 5VDC output from c...

Page 25: ...26 3 relay and CNT07015 5 relay UNIT LED BLUE DESCRIPTION 1 Flash Normal 1 flash every 4 seconds Rapid Communication Busy Error 2 flashes per second SOLID ON Communications cannot be established with...

Page 26: ...ication Busy Error 2 flashes per second SOLID ON Communications cannot be established with the AFC Off No Power GND 13 8VDC 5V TRANE U S INC UNIT STATUS FAULT 13 8V DATA A DATA B GND Pb D18 D16 D14 D1...

Page 27: ...EN 27 Sensor Locations Gas Tem perature Sensor GT loca ted on copper section of m anifold black wires Evaporator Tem perature Sensor ET loca ted on 3 8 Alum inum distribut or tube orange wires EEV Ste...

Page 28: ...Terminal to Terminal Measurement Common Terminal to Terminal Measurement Gray Orange 46 ohms Brown Blue 46 ohms Gray Red 46 ohms Brown Yellow 46 ohms Gray Yellow 46 ohms Red Orange 46 ohms Gray Black...

Page 29: ...tatus LED will be flashing 2 Gauges should indicate suction pressure dropping Valve is working LPCO may trip N No ot te e The Close Valve Test will exit after 1 5 minutes 90 seconds and will not reini...

Page 30: ...1 3368 0 60 36 2 2 28445 2 66 67 19 4 12491 1 67 126 52 2 3230 0 58 37 2 8 27661 2 62 68 20 0 12181 1 65 128 53 3 3098 0 56 38 3 3 26902 2 59 69 20 6 11879 1 62 130 54 4 2972 0 54 39 3 9 26166 2 56 70...

Page 31: ...TAM7 SF 2E EN 31 Troubleshooting Click or Scan to see a video on Performing a Sensor Check...

Page 32: ...Does suction pressure go down EEV and coil are working Replace EVC Check operation YES YES Perform tem perature sensor check YES NO Replace EEV Check operation Ohm coil per Stepper Motor Tables NO Is...

Page 33: ...ired in series with R or aux contacts No No Yes No No Yes System has proper Superheat Rewire shutdown device Retest To A STEP 3 Is in door m otor running Correct issue and retest for Low Superheat No...

Page 34: ...est for L ow Superheat Yes No No Yes System has proper Superheat To A STEP 6 Cycle syst em pow er and check subco oling STEP 7 Subco oling is high Yes Adjust to specifications prescribed in OD Service...

Page 35: ...ing Low Superheat process is com plete clear all EVC Board Fault Codes If Low Superheat condition has NOT been resolved contact your FSR or local distributor for further assistance 1 Frost Test Proced...

Page 36: ...nvironments the manufacturer offers a broad portfolio of advanced controls and HVAC systems comprehensive building services and parts For more information visit www IRCO com The manufacturer has a pol...

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