Troubleshooting by Indication on the Remote Controller
Si37-701
308
Troubleshooting
Troubleshooting
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Power ON
Power OFF
On-site causes.
Make proper wire connections
without open phase, erroneous
connections, or erroneous order of
phases.
On-site causes
Correct the unbalanced loads to
eliminate the unbalanced state.
Unbalanced voltage will cause
extremely unbalanced current,
thus impairing the service life of or
resulting in the malfunction of the
equipment.
Replace the compressor.
Replace the fan motor.
Replace the fan driver.
Replace the inverter PC board.
Observe the conditions of the
PC board.
In the case of a serious failure, a
compressor failure may cause
the failure of the PC board. Even
if the PC board is replaced, it
may cause failure again.
To avoid that, recheck the
compressor for ground and for
any broken wires. Furthermore,
even after the completion of PC
board replacement, check the
compressor.
Replace the fan driver PC board.
Observe the conditions of the
PC board.
NO
NO
YES
YES
YES
YES
YES
YES
NO
NO
NO
NO
NO
NO
Check for
power supply voltage.
Voltage between phases:
380 to 415V Phase
voltage: 220
to 240V
Unbalanced
power supply? (Not more
than 2%: Phase voltage of not
more than approx.
5V)
The
insulation resistance is
low (i.e., not more than
100k
Ω
.)
The
insulation resistance is
low (i.e., not more than
1M
Ω
.)
Has the
power transistor got
faulty?
Has the
power transistor got
faulty?
Disconnect the cable from the
compressor, and then check
the compressor for the
insulation resistance.
Disconnect the cable from the
fan, and then check the fan
motor for the insulation
resistance.
Check the inverter power
transistor.
Check the fan driver power
transistor.
A
Summary of Contents for VRV III REYQ10PY1
Page 1: ...REYQ8 48PY1 R 410A Heat Recovery 50Hz Si37 701 ...
Page 59: ...Specifications Si37 701 48 Specifications ...
Page 105: ...Refrigerant Flow for Each Operation Mode Si37 701 94 Refrigerant Circuit ...
Page 230: ...Si37 701 Troubleshooting by Remote Controller Troubleshooting 219 ...
Page 374: ...Si37 701 Piping Diagrams Appendix 363 REYQ14P 16PY1 3D058153A S2NPL S1NPH ...
Page 375: ...Piping Diagrams Si37 701 364 Appendix REMQ8PY1 3D057743 ...
Page 376: ...Si37 701 Piping Diagrams Appendix 365 REMQ10PY1 12PY1 3D057742 ...
Page 377: ...Piping Diagrams Si37 701 366 Appendix REMQ14PY1 16PY1 3D057741 ...
Page 382: ...Si37 701 Piping Diagrams Appendix 371 1 3 BS Unit 4D057985A ...
Page 384: ...Si37 701 Wiring Diagrams for Reference Appendix 373 REYQ14 16PY1 3D056774C ...
Page 385: ...Wiring Diagrams for Reference Si37 701 374 Appendix REMQ8PY1 3D055307E ...
Page 386: ...Si37 701 Wiring Diagrams for Reference Appendix 375 REMQ10 12PY1 3D055308E ...
Page 387: ...Wiring Diagrams for Reference Si37 701 376 Appendix REMQ14P 16PY1 3D055309E ...
Page 392: ...Si37 701 Wiring Diagrams for Reference Appendix 381 FXCQ40M 50M 80M 125MVE 3D039557A ...
Page 394: ...Si37 701 Wiring Diagrams for Reference Appendix 383 FXZQ20M 25M 32M 40M 50M8V1B 3D038359 ...
Page 395: ...Wiring Diagrams for Reference Si37 701 384 Appendix FXKQ25MA 32MA 40MA 63MAVE 3D039564C ...
Page 399: ...Wiring Diagrams for Reference Si37 701 388 Appendix FXDYQ180M 200M 250MV1 ...
Page 402: ...Si37 701 Wiring Diagrams for Reference Appendix 391 FXMQ200MA 250MAVE 3D039621B ...
Page 403: ...Wiring Diagrams for Reference Si37 701 392 Appendix FXHQ32MA 63MA 100MAVE 3D039801D ...
Page 406: ...Si37 701 Wiring Diagrams for Reference Appendix 395 2 4 BS Unit 3D055928C ...
Page 423: ...Piping Installation Point Si37 701 412 Appendix ...
Page 427: ...Example of Connection R 410A Type Si37 701 416 Appendix ...
Page 433: ...Method of Checking the Inverter s Power Transistors and Diode Modules Si37 701 422 Appendix ...
Page 447: ...Si37 701 iv Index ...
