GMV5 DC INVERTER VRF UNITS SERVICE MANUAL
167
(7) Low voltage protection for the DC bus of the variable-frequency compressor's drive board (ODU fault
PL)
(8) Variable-frequency compressor starting failure (ODU fault PJ)
Yes
No
PL
Check if the voltage of the
whole system's input power
cable is lower than 320V.
Complete
Elevate the voltage of
the input power cable
to 380 V.
The compressor's drive
board is faulty and needs to
be replaced.
No
No
PJ
Restart the system five
minutes after shutting down it
to see if the failure is solved.
Complete
Reconnect the
compressor's UVW
cable.
Check if the compressor's
UVW cable is connected
properly.
Replace the compressor's
drive board to see if the
failure is solved.
The compressor is faulty
and needs to be replaced.
Yes
No
Summary of Contents for GMV-224WM/B-X
Page 1: ...GMV5 DC INVERTER VRF UNITS SERVICE MANUAL T1 R410A 50 60Hz GC201508...
Page 27: ...GMV5 DC INVERTER VRF UNITS SERVICE MANUAL 24...
Page 29: ...GMV5 DC INVERTER VRF UNITS SERVICE MANUAL 26 V Construction Organization Process...
Page 38: ...GMV5 DC INVERTER VRF UNITS SERVICE MANUAL 35...
Page 47: ...GMV5 DC INVERTER VRF UNITS SERVICE MANUAL 44 GMV 504WM B X GMV 560WM B X and GMV 615WM B X...
Page 156: ...GMV5 DC INVERTER VRF UNITS SERVICE MANUAL 153 low press ure air pipe...
Page 158: ...GMV5 DC INVERTER VRF UNITS SERVICE MANUAL 155 2 Low exhaust temperature protection E2...
Page 160: ...GMV5 DC INVERTER VRF UNITS SERVICE MANUAL 157...
Page 161: ...GMV5 DC INVERTER VRF UNITS SERVICE MANUAL 158 5 System refrigerant lacking protection U4...
Page 162: ...GMV5 DC INVERTER VRF UNITS SERVICE MANUAL 159 6 System high pressure ratio protection J8...
Page 163: ...GMV5 DC INVERTER VRF UNITS SERVICE MANUAL 160 7 System low pressure ratio protection J9...
Page 165: ...GMV5 DC INVERTER VRF UNITS SERVICE MANUAL 162 11 Pressure sensor fault...
Page 224: ...GMV5 DC INVERTER VRF UNITS SERVICE MANUAL 221 2 Model GMV 335WM B X Exploded View...
Page 242: ...GMV5 DC INVERTER VRF UNITS SERVICE MANUAL 239...
Page 248: ...GMV5 DC INVERTER VRF UNITS SERVICE MANUAL 245 Click Finish...
Page 254: ...GMV5 DC INVERTER VRF UNITS SERVICE MANUAL 251 Click Next Installing...
Page 255: ...GMV5 DC INVERTER VRF UNITS SERVICE MANUAL 252 Click Close...
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Page 287: ...GMV5 DC INVERTER VRF UNITS SERVICE MANUAL 284 1 4 2 5 Communication Debug...
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