AY/AE-A079E
AY/AE-A099E
17
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
switches on the indoor unit.
Using a tester, measure the
voltage between terminal " 1 "
and " 2 " of connector CN2 on
PWB ass'y.
Is the measured value
approx. 16.0 Vac ?
Replace the PWB with a new
one.
Is the 2.5A fuse down ?
Replace the fuse and varistor
with new ones.
Replace the ftransformer with
a new one.
