Service manual
10.2 Troubleshooting
For 9K and 12K :
Failure phenomenon
Operation
lamp
Timer
lamp
Indoor fan speed has been out of control for over 1 minute
☆
X
Indoor room temp. or evaporator sensor is open circuit or short circuit
☆
On
Over current protection of the compressor occurs 4 times X
☆
EEROM error On
☆
Indoor unit communication error
☆ ☆
illuminate simultaneously
Outdoor condenser temperature sensor is open circuit or short circuit
☆ ☆
illuminate alternately
r OFF
☆
Flash at 5Hz
For 18K and 24K:
Failure phenomenon
Operation
lamp
Timer
lamp
Defrosting
lamp
Auto
lamp
Over current protection of the compressor occurs 4 times ☆ ☆ ☆ ☆
Indoor room temp. sensor is open circuit or short circuit X ☆ X X
Temp. sensor on indoor evaporator is open circuit or short circuit ☆ X X X
Temp. sensor on outdoor condenser is open circuit or short circuit
(without for cooling only models)
X X ☆ X
Outdoor unit protects(outdoor temp sensor, phase order etc) X X ☆ ☆
EEROM error X ☆ X ☆
Indoor unit communication error X X X ☆
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