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13. Troubleshooting
Display board
13.1
1
2 2
1
AU TO indicator
Thi s indicator illuminates whe n the air conditioner i s in AUTO operation.
2 2
DE FROST indicator (F or Cooling & H eating mo dels only)
Thi s indicator illuminates whe n the air conditioner starts defrostin g automati cally or
when the warm air control fea ture is activated in he ating oper ation.
3
TEMPERATUR E indicator
Displays the te mperature settings when the air condition er is operational.
4
OPERATION in dicator
This indicator fl ashe s after power is on and illuminate s when the unit is in operation.
5
TIMER indicator
This indicator il luminates when TIMER is set ON/OFF.
Troubleshooting
13.2
For models adopting electrical function
Failure phenomenon
Over current protection of the compressor occurs 4
times
Indoor room temp. sensor is open circuit or short
circuit
Temp. sensor on indoor evaporator is open circuit
or short circuit
Temp. sensor on outdoor condenser is open circuit
or short circuit (without for cooling only models)
Outdoor unit protects(outdoor temp sensor, phase
order etc)
EEROM error
Indoor unit communication err
r Extinguish
NOTE: For cool only model, the defrosting lamp is replaced with fan lamp, but malfunction display remains.
36
Signal receptor
5
4
3
☆ Flash at 5Hz
Service manual
Operation
lamp
☆
X
☆
X
X
X
X
Timer
Defrosting
lamp
lamp
☆
☆
X
☆
X
X
X
☆
X
☆
X
☆
X
X
Auto
lamp
☆
X
X
X
☆
☆
☆
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