![background image](http://html2.mh-extra.com/html/daikin/vrv-iii-reyq8py1b/vrv-iii-reyq8py1b_service-manual_3517540338.webp)
SiBE37-701
Troubleshooting by Indication on the Remote Controller
Troubleshooting
327
Troubleshooting
Check if the
temperature difference between
the suction pipe and the heat exchanger
is 20 ˚C and over.
Check if the
property of suction pipe thermister
(A7T) and heat exchanger thermister
(R4T) are normal.
(*3)
Check if the
low pressure is 0.1MPa
or below. (
∗
1)
Check if the
property of low pressure
sensor is normal.
(
∗
2)
Replace the low pressure
sensor.
Replace the main PC board
(A1P).
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
NO
NO
YES
YES
Remove the factor of
decreasing low pressure by
referring to
Check 6
.
Remove the factor of
superheating by referring to
Check 3
.
Replace the thermister.
Replace the main PC board.
• With individual systems,
replace the control PC board
1 (A1P) or the control PC
board 3 (A3P).
• With multi systems, replace
the main PC board (A1P).
NO
NO
YES
Reset the operation using the remote controller then restart.
Set up a pressure gauge at the service port on the low
pressure side.
Reset the operation using the remote controller then restart.
∗
3: Compare the thermister resistance value with the value on the surface
thermometer.
∗
1: Check the low pressure value by using pressure gauge in operation.
∗
2: Compare the actual measurement value by pressure sensor with the
value by the pressure gauge.
(To gain actual measurement value by pressure sensor, measure the
voltage at the connector [between (2)-(3)] and then convert the value
into pressure referring to P439.)
In heating mode
In cooling mode
Check 6
: Referring to the information on P373.
Check 3
: Referring to the information on P370.
∗
1
∗
2
∗
1
∗
2
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...