Read Sharp AU-A18 (serv.man8) Service Manual online
17
AH-AP18CS
AH-AP24CS
AU-A18CS
AU-A24CS
AH-AP24CS
AU-A18CS
AU-A24CS
YES
NO
NO
YES
The machine does not function
with remote controller
with remote controller
Push button "OI" on the wireless
remote controller.
remote controller.
Is transmitting
indicator of the remote
controller active ?
Is indicator lamp of
indoor unit proper ?
Replace the
PWB with a
new one.
PWB with a
new one.
Does beep sound
from the indoor unit ?
Using a tester,
measure the voltage
between terminals
of resistor R26
on the PWB ass'y.
measure the voltage
between terminals
of resistor R26
on the PWB ass'y.
Push the button "OI".
Are batteries of the
wireless remote controller
proper ?
Replace the batteries
with new ones.
with new ones.
Replace the wireless
remote controller.
remote controller.
When the signal is
received, does the voltage
change ?
Replace the PWB with a new
one.
one.
PWB is normal.
Inspect the outdoor unit.
Inspect the outdoor unit.
NO
YES
NO
YES
Replace the photo
detector unit with a new
one.
detector unit with a new
one.
NO
YES
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