GREE Duct type Ducted Type Split Air-Conditioner Units
106
Troubleshooting:
“P5” overcurent
protection for inverter
compressor
Compressor driver board
is faulted
Yes
Replace the compressor driver board
.
No
Check if the UVW wires
are well connected?
Yes
No
Replace the compressor
Check if the
resistance value between
different windings of compressor
are normal (
the normal value is less than
2
ohm)
?If resistances of two windings are the same
; if the
insulation atainst ground of different windings of
compressor are normal
(the normal
value is less than 2
megohm)?
Yes
Yes
Clear out foreign matter
, open the valves
Check if the system is blocked,
if the valves are open?
Yes
Check if the control
valve of system is in normal condition.
If the oil-balancing valve works normally,
if the
control terminals are well inserted,
etc. If they
are normal, please see the
next step;
Yes
If there
are other faults? Such as compressor
startup failure (PJ), IPM module protection (P
6),
desynchronizing protection of
compressor (P9
).
Yes
The compressor is damaged,
please replace it.
(47) “P6” driven IPM module protection for compressor
Error display: ODU mainboard displays .
Applicable model: all models.
Condition and method for fault judgement:View the error code displayed in dual-8 nixie tube of
main control board of ODU, if the nixie tube displays P6, it means driven IPM module protection for
compressor.
Possible causes:
1) Poor contact of compressor UVW wires.
2) Incorrect connecting order of compressor UVW wires.
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