Power Supply Waveforms Check; Inverter Units Refrigerant System Check - Daikin CTXS09GVJU Service Manual

Check

6.1.8 Power Supply Waveforms Check

Check No.10
Measure the power supply waveform between pins 1 and 2 on the terminal board, and check the
waveform disturbance.
[Fig.1]

6.1.9 Inverter Units Refrigerant System Check

Check No.11
164
Check to see if the power supply waveform is a sine wave (Fig.1).
Check to see if there is waveform disturbance near the zero cross (sections circled in Fig.2)
Refrigerant system check
Is
the discharge
thermister disconnected
from the holder?
NO
Check for gas leaks.
See the section on insufficient gas
detection.
[Fig.2]
YES
SiUS12-814
Correct the problem.
Replace the refrigerant.
(R8380)
Service Diagnosis