AY-AP18CE AY-AP24CE
AH-AP18CE AH-AP24CE
AE-A18CE AE-A24CE
AU-A18CE AU-A24CE
27
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)
TROUBLESHOOTING GUIDE OF CONTROL CIRCUIT
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