Error code:
P0
Reason:
If the power supply to the compressor controller is faulty, the display shows the error code
“P0” and the unit switches off
Cause:
n
Electrical connection faulty
n
Faulty control board
n
Condenser fan motor defective or blocked
n
Compressor defective
Check the connecting cables between the con-
trol board and compressor? Are they faulty?
YES
Establish a correct connection between the
control board and compressor.
NO
Check the inverter controller (see section
‘Check the inverter controller’ on page 37
).
Fault eliminated?
NO
Replace the control board.
YES
Check the condenser fan motor. Is it working
correctly?
NO
See troubleshooting fault F5
YES
Check the winding resistances of the com-
pressor. Are they OK?
NO
Replace the compressor.
YES
Exchange the control boards of the outdoor
unit.
Check the inverter controller
Switch off the power supply to the unit. Wait until the capacitors are fully discharged and disconnect the com-
pressor from the control board.
Check the resistances at the outputs of the control board with the aid of a digital voltmeter as follows:
Voltmeter
Normal resistance
(+) Red
(-) Black
U
N
¥
(multiple M
W
)
V
W
(+) Red
37
Summary of Contents for ATY 265
Page 41: ...Resistance values for probes T1 T2 T3 and T4 K Ohm K Ohm K Ohm K Ohm 41...
Page 42: ...Resistance values for probe T5 K Ohm K Ohm K Ohm K Ohm REMKO ATY 42...
Page 49: ...49...
Page 50: ...REMKO ATY 50...
Page 51: ......
