TROUBLESHOOTING
In the event of a malfunction (burning smell, etc.), immediately stop operation, turn off breaker,
WARNING! and consult authorized service personnel.
Merely turning off the indoor unit’s power switch will not completely disconnect the unit from the power source. Always be sure to disconnect the Power Supply Plug or turn off your circuit breaker to ensure that power is completely off.
Before requesting service, perform the following checks:
| Symptom | Problem | See Page |
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NORMAL | Doesn’t operate immedi- | ● If the indoor unit is stopped and then immediately started again, |
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FUNCTION | ately: | the compressor will not operate for about 3 minutes, in order to |
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| prevent fuse blowouts. | — |
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| ● Whenever the Power Supply Plug is disconnected and then recon- | |
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| nected to a power outlet, the protection circuit will operate for about |
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| 3 minutes, preventing unit operation during that period. |
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| Noise is heard: | ● During operation or immediately after stopping the unit, the sound |
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| of water flowing in the air conditioner’s piping may be heard. |
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| Also, noise may be particularly noticeable for about 2 to 3 min- |
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| utes after starting operation (sound of refrigerant flowing). | — |
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| ● During operation, a slight squeaking sound may be heard. This is |
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| the result of minute expansion and contraction of the front panel |
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| due to temperature changes. |
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| ● During Heating operation, a sizzling sound may be heard occasional. | 15 |
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| This sound is produced by the Automatic Defrosting operation. | |
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| Smells: | ● Some smell may be emitted from the indoor unit. This smell is |
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| the result of room smells (furniture, tobacco, etc.) which have | — |
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| been taken into the indoor unit. |
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| Mist or steam is | ● During Cooling or Dry operation, a thin mist may be seen emitted |
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| emitted: | from the indoor unit. This results from the sudden cooling of room | — |
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| air by the cool air emitted from the indoor unit, resulting in con- |
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| densation and misting. |
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| ● During Heating operation, the outdoor unit’s fan may stop, and |
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| steam may be seen rising from the unit. This is due to Automatic | 15 |
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| Defrosting operation. |
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| Airflow is weak or stops: | ● When Heating operation is started, fan speed is temporarily very |
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| low, to allow internal parts to warm up. |
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| ● During Heating operation, if the room temperature rises above | — |
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| the thermostat setting, the outdoor unit will stop, and the indoor |
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| unit will operate at very low fan speed. If you wish to warm the |
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| room further, set the thermostat for a higher setting. |
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| ● During Heating operation, the indoor unit will temporarily stop |
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| operation (between 7 and 15 minutes) as the Automatic Defrost- | 15 |
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| ing mode operates. During Automatic Defrosting operation, the | |
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| OPERATION Indicator Lamp will flash. |
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| ● The fan may operate at very low speed during Dry operation or | 6 |
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| when the unit is monitoring the room’s temperature. | |
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| ● During SUPER QUIET operation, the fan will operate at very low | 6 |
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| speed. | |
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| ● In the monitor of AUTO operation, the fan will operate at very | 6 |
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| low speed. | |
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| Water is produced from | ● During Heating operation, water may be produced from the out- | 15 |
| the outdoor unit: | door unit due to Automatic Defrosting operation. | |
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