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Sharp AY-A079E Service Manual page 18

Split system room air conditioners
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AY/AE-A079E
AY/AE-A099E
The machine does not function
with remote controller
Push butt "OI" on on the wireless
remote controller.
Is transmitting
indicator of the remote
controller active ?
YES
Does beep sound
from the indoor unit ?
NO
Does connector
CN101 & CN6 connect
in place ?
YES
Using a tester,
measure the voltage
between terminals
of resistor R15
on the PWB ass'y.
Push the button "OI".
NO
Are batteries of the
wireless remote controller
proper ?
Replace the wireless
remote controller.
YES
Is indicator lamp of
indoor unit proper ?
NO
Connect the
Replace the
connector
PWB with a
properly.
new one.
When the signal is
received, does the voltage
change ?
Replace the PWB with a new
one.
18
NO
Replace the batteries
YES
with new ones.
YES
PWB is normal.
Inspect the outdoor unit.
NO
NO
Replace the display unit
YES
with a new one.

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