FILE NO. SVM-10020

11-8. How to Check Simply the Main Parts

11-8-1. 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.

(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 2 parts

a.Main P.C. board part:

DC power supply circuit (5 V, 12 V), Indoor fan motor control circuit, CPU and peripheral circuits, buzzer, and Driving circuit of louver.

b.Indication unit of infrared ray receiving Infrared ray receiving circuit, LED:

11-8-2. How to shorten time for start the compressor.

1.Turn on remote.

2.Setting requirment operation.

3.Push off remote.

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.

PRESET

FAN

 

 

TEMP

 

ONE-TOUCH

MODE

 

 

COMFORT

 

QUIET

SLEEP

 

SWING FIX

Hi-POWER ECO

 

TIMER

CLR

 

ON

OFF

 

SLEEP

SET

 

°C/°F CHK

FILTER CLOCK

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.

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