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SiBE37-701
Troubleshooting by Indication on the Remote Controller
Troubleshooting
265
Troubleshooting
NO
Electronic
expansion valve
is connected to X7A of
indoor unit PC
board.
Coil check
(
∗
1) of electronic
expansion valve drive
indicates
normal.
NO
NO
YES
Relay
cables short circuit or
disconnected.
YES
Shut the power supply off after
connection and then restart.
Replace coil of electronic
expansion valve.
Replace relay cables.
When restarting the operation
after shutting the power supply off
does not work, replace indoor unit
PC board.
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
YES
∗
1: How to check the coil of electronic expansion valve drive
Remove the connector for electronic expansion valve (X7A) from PC board. Measure the resistance
value between pins and check the continuity to judge the condition.
1) White
2) Yellow
3) Orange
4) Blue
6) Brown
5) Red
The normal products will show the following conditions:
No continuity between (1) and (2)
Resistance value between (1) and (3) is approx. 300
Ω
Resistance value between (1) and (5) is approx. 150
Ω
Resistance value between (2) and (4) is approx. 300
Ω
Resistance value between (2) and (6) is approx. 150
Ω
White (1)
Red (5)
Orange (3)
φ
1
φ
3
Yellow
(2)
Brown
(6)
Blue
(4)
φ
2
φ
4
M
Summary of Contents for VRV III REYQ8PY1B
Page 1: ...REYQ8 48PY1B R 410A Heat Recovery 50Hz SiBE37 701...
Page 111: ...Refrigerant Flow for Each Operation Mode SiBE37 701 100 Refrigerant Circuit...
Page 252: ...SiBE37 701 Troubleshooting by Remote Controller Troubleshooting 241...
Page 396: ...SiBE37 701 Piping Diagrams Appendix 385 REYQ14P 16P 3D058153B S2NPL S1NPH...
Page 397: ...Piping Diagrams SiBE37 701 386 Appendix REMQ8P 3D057743...
Page 398: ...SiBE37 701 Piping Diagrams Appendix 387 REMQ10P 12P 3D057742...
Page 399: ...Piping Diagrams SiBE37 701 388 Appendix REMQ14P 16P 3D057741...
Page 400: ...SiBE37 701 Piping Diagrams Appendix 389 1 2 Indoor Unit FXFQ P...
Page 405: ...Piping Diagrams SiBE37 701 394 Appendix 1 3 BS Unit 4D057985A...
Page 415: ...Wiring Diagrams for Reference SiBE37 701 404 Appendix FXZQ20M 25M 32M 40M 50MV1...
Page 416: ...SiBE37 701 Wiring Diagrams for Reference Appendix 405 FXCQ20M 25M 32M 63MV3...
Page 417: ...Wiring Diagrams for Reference SiBE37 701 406 Appendix FXCQ40M 50M 80M 125MV3...
Page 420: ...SiBE37 701 Wiring Diagrams for Reference Appendix 409 FXDQ20M 25MV3...
Page 421: ...Wiring Diagrams for Reference SiBE37 701 410 Appendix FXSQ20M 25M 32M 40M 50M 63MV3...
Page 422: ...SiBE37 701 Wiring Diagrams for Reference Appendix 411 FXSQ80M 100M 125MV3...
Page 447: ...Example of connection SiBE37 701 436 Appendix...
Page 453: ...Method of Checking the Inverter s Power Transistors and Diode Modules SiBE37 701 442 Appendix...
Page 467: ...SiBE37 701 iv Index...