Gree GMV-1015WM/G-U, Руководство по обслуживанию

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Gree GMV6 DC Inverter VRF Units Service Manual
191
■ The compressor is damaged;
■ The comp ressor drive board operates improperly.
Troubleshooting:
"PJ" Inverter Compressor
Startup Failure
The compressor drive
board operates improperly
Yes
Replace the compressor
drive board
No
Whether the U, V and W
phases of compressor wires are
connected properly?
Yes
No
Replace the
compressor
Whether the resistance between
the windings of each phase for the compressor is
normal (generally less than 2 ohms)? Whether the resistance
values are equal to each other? Is grounding insulation of the
phase windings of the compressor normal
(generally greater than 2 megohms)?
Yes
Yes
Remove foreign matters
and open the valve
Whether the system is clogged
and whether the valve is open?
Yes
whether the system control valve
is normal (for example, whether balance valve
operates normally and whether the control
terminal is plugged properly)?
Yes
Whether other faults have
occurred at the same time (for example, loss
of synchronization for the compressor (P9), IPM
module protection (P6) and compressor
over-current protection (P5))?
Yes
The compressor is
damaged and should be
replaced
Whether the U, V and W
phases of compressor
wires are connected properly?
Yes