Service manual
37
13.2
Troubleshooting
For cooling mode:
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
☆
No over-zero signal
☆
☆
r
Extinguish
☆
Flash at 5Hz
For heat pump mode:
Failure phenomenon
Operation
lamp
Timer
lamp
Defrosting
lamp
Over current protection of the compressor occurs 4 times
☆
X
☆
Indoor fan speed has been out of control for over 1 minute
X
☆
☆
No over-zero signal
☆
☆
☆
Temp. sensor on indoor evaporator is open circuit or short circuit
X
X
☆
Indoor room temp. sensor is open circuit or short circuit
X
☆
X
EEROM error
On
☆
X
r
Extinguish
☆
Flash at 5Hz
