Airwell VVFA Series Service Manual page 62

[111] Compressor out of control
[118] the compressor start failure
Check if voltage of power supply is normal
Check the wires among U, V,
W of compressor are normal
If compressor is normal
(compressor coil resistor, insulation)
Compressor load too much,
check the reason
[112] Radiator temp. of transducer too high; [81] IPM module temp. too high;
Check the temperature sensor
characteristic is correct
Check the radiator is blocked
If screw of module is fixed well, and if
radiating silica gel is daubed enough
and evenly, if there is no dirt on radiator
Improve the running
environment of outdoor unit
Yes
Yes
Yes
Yes
Yes
Yes
No
Improve power supply circuit
No
No
Replace the compressor
No
Replace the sensor
Yes
Clean the radiator
No
Fix it well and daub gel
again, clean the radiator
60
Replace the wires