Read Sharp AU-M188 Service Manual online
14
AH-M098E
AU-M188E
AU-M188E
TROUBLESHOOTING OF A CONTROL CIRCUIT
measure the secondary voltage
of transformer.
of transformer.
YES
NO
YES
NO
The machine does not function
at all with remote controller and
switches on the indoor unit.
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 of
Indoor's P.W.B. ass'y.
voltage between terminal " 1 "
and " 2 " of connector CN2 of
Indoor's P.W.B. ass'y.
Is the measured value
approx. 16.0 Vac ?
Replace the Indoor P.W.B. ass'y
with a new one.
with a new one.
Is the 2.5A fuse down ?
Replace the fuse and varistor
with new ones.
with new ones.
Replace the transformer with
a new one.
a new one.
Å@
Click on the first or last page to see other AU-M188 service manuals if exist.