Detective actuators:
Detective details:
Forecast of cause :
1. Connector connection failure
2. Thermistor failure
3. Coil failure
4. 4-way valve failure
5. Main PCB failure
03-37
Indoor unit controller PCB circuit
Heat-exchanger temperature thermistor
Room temperature thermistor
4-way valve
When the indoor heat-exchanger temperature is compared with
the room temperature, and either following condition is detected
continuously two times, the compressor stops.
Cooling or Dry operation
[Indoor heat-exchanger temp.] - [Room temp.] > 18°F (10°C)
Heating operation
[indoor heat-exchanger temp.] - [Room temp.] < -18°F (-10°C)
If the same operation is repeated 5 times,
the compressor stops permanently.
Troubleshooting 27
4-way valve error
Indicate or Display:
Indoor unit
Operation lamp: 9 times Flash,
Timer lamp : 9 times Flash
Wired remote control
Error code : [E : 99]
n
: n times blinking
: Light ON: Light OFF
Mode Error
2 9
9
Outdoor unit (AOUG36/48LMAS1)
A B C D E F
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