Daikin ATKS25E2V1B [261/316] Discharge pressure check

Daikin ATKS25E2V1B [261/316] Discharge pressure check
Check SiBE12-712C
250 Service Diagnosis
5.1.7 Discharge Pressure Check
Check No.08
5.1.8 Outdoor Unit Fan System Check (With DC Motor)
Check No.09
5.1.9 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.
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)
(R7158)
Not dirty
YES
YES
Dirty
NO
NO
NO
YES
Are the heat exchanger
and air filter dirty?
Is the connection pipe
deformed?
Is the stop valve open?
High
Replace the compressor.
Open the stop valve.
Replace the pipe installed at
the site.
Clean.
Replace the compressor.
Discharge pressure check
(R7159)
YES
YES
NO
NO
Outdoor unit fan system
functioning.
Check the outdoor unit fan system.
Go to Check No. 15.
Outdoor unit fan running?
Fan motor
lead wire connector
disconnected?
Reconnect.
[Fig.1] [Fig.2]

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