Service manual

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Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
(V2823)
NO
YES
YES
NO
Replace indoor unit PC
board.
Set one remote control to
"SLAVE"; turn the power
supply off once and then back
on.
There is possibility of
malfunction caused by noise.
Check the surrounding area
and turn on again.
NO
NO
Using 2-remote
controls control.
All indoor PC board
microcomputer monitors
blink.
YES
Multi-core cable is
used for the indoor unit
remote control
transmission wiring.
Operation returns to
normal when the power is
turned off momentarily.
YES
YES
SS1 of both remote
controls is set to
"MASTER."
NO
Switch to double-core
independent cable.
replacement
Defect of remote control PC
board or indoor unit PC board.
Replace whichever is
defective.