Gree GMVVQ1015WM/C-X, Service Manual

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Gree GMV6 HR DC Inverter VRF Units Service Manual
202
"P5" Inve rte r Compressor
Over-current Protection
The co mpr essor drive
boa rd o perates impr operly
Yes
Replace th e compre ssor
drive boar d
No
Whether th e U, V and W
pha ses of compressor wire s are
connected prope rly?
Yes
No
Replace th e
compresso r
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 forei gn matters
and op en the valve
Whether th e system is clogged
and whether the valve is op en?
Yes
whether th e system con trol valve
is n ormal (for e xa mpl e, whether balan ce valve
ope rate s normall y and whether th e control
terminal is plu gged prop erly)?
Yes
Whether other fa ults have
occurred at the same time (for example,
compressor startup failure (PJ), IPM module
protection (P6) and loss of synchronization
for the compressor (P9))?
Yes
The co mpr essor is
damag ed and sh ould be
repl ace d