03-32
Troubleshooting 24
Outdoor unit trip detection
Detective actuators:
Detective details:
Forecast of cause:
OKOK
OKOK
Check Point 3: Replace main PCB
Outdoor unit main PCB
Compressor
Transistor PCB
If Check Point 1 or 1,2 do not improve the symptom, change main PCB.
Check Point 2: Check transistor PCB (IPM)
>> If IPM is abnormal, replace Transistor PCB.
OKOK
Check Point 4: Replace compressor
If Check Point 3 do not improve the symptom, change compressor.
1. Outdoor unit fan operation defective, foreign matter on heat-exchanger,
excessive rise of ambient temperature
2. Main PCB
3. Inverter compressor failure (lock, winding short)
4. Transistor PCB (IPM) failure
"Protection stop by overcurrent generation after
inverter compressor start processing completed''
generated consecutively 10 times (36/48 models 5 times).
* The number of generations is reset if the start-up
of the compressor succeeds.
No obstructions in air passages?
Heat exchange fins clogged
Outdoor unit fan motor check
Ambient temperature not raised by the effect of other heat sources?
Discharged air not sucked in?
Check Point 1 : Check the outdoor unit fan operation, heat exchanger, ambient temperature
Check IPM. (Parts information 6)
Indicate or Display:
Indoor unit
Operation lamp: 9 times Flash,
Timer lamp : 4 times Flash
Wired remote control
Error code : [E : 94]
n
: n times blinking
: Light ON: Light OFF
Mode Error
2 9
4
Outdoor unit (AOUG36/48LMAS1)
A B C D E F
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