Daikin J Series Service Manual Page 268

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SiE18-201 Troubleshooting - Outdoor Unit Related
Service Diagnosis 257
3.4.13 Power Supply Waveforms Check
Check No.13 Measure the power supply waveform between pins 1 and 3 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)
3.4.14 Total Operating Current Check
Check No.14
[Fig.1] [Fig.2]
Clamp A
Clamp B
When connecting the power
supply cord, do not peel back
more than 30mm of the cable
insulation from the power supply
terminal board, in order to be
able to pull the connecting
terminal board around.
Clamp the
connecting wires
down with clamps A
and B as shown in
the diagram.
30
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