16
AH-N45DP2
AU-N45DP2
AH-N56DP2
AU-N56DP2
TROUBLESHOOTING GUIDE OF CONTROL CIRCUIT
measure the secondary voltage
of transformer.
YES
NO
YES
NO
The machine does not function
at all with remote controller and
switch on the indoor unit.
Using a tester, measure the
voltage between anodes of D1
and D2 on PWB ass'y.
Is the measured value
approx. 17.5 Vac ?
Replace the PWB with a new
one.
Is the WPE1
open circuit ?
Replace the fuse and varistor
with new ones.
Replace the transformer with
a new one.
YES
NO
Check the cleaning
switch 2(1),CN9, CN8
and lead wires.
Replace the cleaning switch 2(1).
(or reset connector)
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