Service manual

25
EE
Check of outdoor thermistor
Measure
resistance
between CN 661
1 and 2.
No
Ye s
Replace the
thermistor.
Defrost thermistor (RT61)
Reconnect CN661.
Turn ON the power
supply and press
the EMERGENCY
OPERATION switch.
Is the resistance of
thermistor normal?
No
Ye s
Does the unit operate
10 minutes or more?
Replace the deicer P.C.
board.
OK ❈
❈ Defective contact of the connector is considered.
Turn OFF the
power supply.
Start
When OPERATION INDICATOR lamp flashes 6-time.
Thermistors in the outdoor unit are abnormal.
OB387B-1.qxp 07.5.23 2:48 PM Page 25