— 42 —
Is the unit operating?
Is the output
voltage of IC02M's 14PIN on
the MAIN PCB 0V?
Is the "Power relay" for
indoor motor ON?
Check the indoor motor.
1. Press power ON/OFF button.
2. Reconnect the power supply.
1. Check or exchange IC01M.
1. Check the wiring of
"Power relay".
2. Exchange "Power relay".
YES
YES
YES
NO
NO
NO
YES
Is the voltage
between 1PIN(IN) of CN-FAN(IN) and
NEUTRAL 220V?
1. Check or exchange RY10.
NO
Is the compressor operating?
Is it cooling operation?
1. Press power "ON/OFF" button.
2. Select cooling operation.
1. Set following.
Set temp. < Room temp.
2. Wait, if the unit has operating
with 3-minute time delay.
YES
NO
YES
NO
Is the output
voltage of IC02M's 13/12(OUT FAN B)
on the MAIN PCB 0V?
Is the "Power relay" for
outdoor motor ON?
Check the outdoor motor A/B.
1. Check or exchange IC02M.
1. Check the wiring of
"Power relay".
2. Exchange "Power relay".
YES
YES
NO
NO
Is the voltage
between OUT A/B of CN-FAN and
NEUTRAL 220V?
1. Check or exchange
RY11/RY12(OUT FAN B).
YES
NO
Possible trouble 8
: Indoor motor does not operate.
Possible trouble 9
: Outdoor motor does not operate.
