TROUBLESHOOTING
Instructions relating to heating are applicable only to “HEAT & COOL MODEL” (Reverse Cycle).
WARNING!
In the event of a malfunction (burning smell, etc.), immediately stop operation, turn off the electrical breaker, and consult authorized service personnel.
Merely turning off the unit’s power switch will not completely disconnect the unit from the power source. Always be sure to turn off the electrical breaker to ensure that power is completely off.
Before requesting service, perform the following checks:
| Symptom |
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NORMAL | Doesn’t operate imme- | • | If the unit is stopped and then immediately started again, the |
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FUNCTION | diately: |
| compressor will not operate for about 3 minutes, in order to prevent |
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| fuse blowouts. |
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| • | Whenever the electrical breaker is turned off then on again, the | ||
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| protection circuit will operate for about 3 minutes, preventing unit |
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| operation during that period. |
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| Noise is heard: | • | During operation and immediately after stopping the unit, the sound |
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| of water flowing in the air conditioner’s piping may be heard. Also, | — | |
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| noise may be particularly noticeable for about 2 to 3 minutes after | ||
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| starting operation (sound of coolant flowing). |
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| • | During Heating operation, a sizzling sound may be heard |
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| occasionally. |
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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 the |
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| result of room smells (furniture, tobacco, etc.) which have been | — | |
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| taken into the air conditioner. |
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| Mist or steam are | • | During Cooling, a thin mist may be seen emitted from the indoor |
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| emitted: |
| unit. |
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| This results from the sudden Cooling of room air by the air emitted | ||
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| from the air conditioner, resulting in condensation 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 the Automatic | 9 | |
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| Defrosting operation. |
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| Air flow is stopped: | • | When Heating operation starts, the fan will not operate or it will |
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| operate at a very low speed to allow the internal parts to warm |
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| up. |
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| • | During Heating operation, if the room temperature rises above the | — | |
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| thermostat setting, the indoor and the outdoor unit will stop. |
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| If you wish to warm the room further, set the thermostat to a higher |
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| setting. |
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| • During Heating operation, the unit will temporarily stop operation |
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| (between 7 and 15 minutes) as the Automatic Defrosting mode | 9 | |
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| operates. During the Automatic Defrosting operation, | will be | |
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| shown on the remote controller display. |
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| • The fan may stop or operate at a very low speed when the unit is | — | ||
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| monitoring the room’s temperature. |
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•In case of
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| will stop and | will be shown on the remote controller display | 10 |
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| of the stopped indoor units. | ||
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| Heating mode and cooling mode (or dry mode) |
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| Heating mode and fan mode |
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Water is produced from • | During Heating operation, water may be produced from the outdoor | 9 | ||
the outdoor unit: |
| unit due to the Automatic Defrosting operation. | ||
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thermo sensor | • | The room temperature sensor may be malfunctioning. Please |
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| consult authorized service personnel. | — | ||
display on the remote |
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controller is flashing: |
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En-12
9/10/07 5:16:16 PM
