12.SERVICE PROCEDURES
(2)A Sensor is Defective
1 Indoor (heat exchanger) coil temp. Sensor is defective.
(a)Open (=No continuity in sensor)
Compressor and outdoor fan repeat ON for 10 minutes and OFF for 6 minutes when sensor opens.
(b)Short
“Freeze Prevention” does not operate when dehumidified water is frozen on the indoor coil.
2Room temp. Sensor (in the remote control unit) is defective.
(a)Open (=No continuity in sensor) Neither outdoor fan nor compressor runs.
(b)Short
Outdoor fan and compressor do not stop. — Excessive cooling.
(3)Operation of Major Electrical Parts
Operation Mode | Operation |
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| Oudoor unit | |||||
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| Indicator lamps |
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| Room | Cool | Timer | Night setback | Sweep |
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| Temp. | Energy saver |
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| Manual | Thermo.ON | ◯ | ◯ |
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| Thermo.OFF | ◯ | ◯ |
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| Night | Thermo.ON | ◯ | ◯ |
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Cool | setback | Thermo.OFF | ◯ | ◯ |
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Timaer | ON Timer |
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| (set) | OFF Timer | ◯ | ◯ | ◯ |
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| Freeze prevention | ◯ | ◯ |
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Fan |
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| Sweep | Cool | ◯ | ◯* |
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Flap | Fan | ◯ |
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Stop | Cool | ◯ | ◯* |
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NOTE ◯* Refer to Cooling Mode.
SM830078
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