(2) Inspection procedures
1) When a P.C. board is judged to be defective,
check for disconnection, burning, or discolora-
tion of the copper foil pattern or this P.C. board.
2) The P.C. board consists of the following 3 parts
a. Main P.C. board part:
DC power supply circuit (5 V, 12 V, 15V)
Indoor fan motor control circuit, CPU and
peripheral circuits, buzzer, and Driving circuit
of louver.
b. Indication unit circuit
c. Infrared ray receiving circuit
11
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9
. How to Check Simply the Main Parts
11
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9
-1. How to check the P.C. board (Indoor unit)
(1) Operating precautions
1) When removing the front panel or the P.C.
board, be sure to shut off the power supply
breaker.
2) When removing the P.C. board, hold the edge
of the P.C. board and do not apply force to the
parts.
3) When connecting or disconnecting the connec-
tors on the P.C. board, hold the whole housing.
Do not pull at the lead wire.
11-9-2. How to shorten time for start the compressor.
1. Turn on remote.
2. Setting requirment operation.
3. Push off remote.
This setting helps to shortern a compressor waiting period when operate cool, heat or dry mode.
A compressor suddenly starts one order of Remote controller is received.
4. Press [SET] button while pressing [CHECK] button
with a tip of a pencil.
5. Then press [ ] button to transmit the signal to the
indoor unit.
5
4
FILE NO. SVM-17050
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