TROUBLESHOOTING
WARNING | In the event of a malfunction (burning smell, etc.), immediately stop operation, turn off the electrical | |
breaker and consult authorized service personnel. | ||
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| 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 | Problem | See Page |
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NORMAL | Doesn’t operate | ● If the indoor unit is stopped and then immediately started again, the |
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FUNCTION | immediately: | 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 pro- |
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| tection circuit will operate for about 3 minutes, preventing unit opera- |
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| tion during that period. |
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| Noise is heard: | ● During operation or immediately after stopping the unit, the sound of |
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| water flowing in the air conditioner’s piping may be heard. Also, noise |
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| may be particularly noticeable for about 2 to 3 minutes after starting | — |
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| operation (sound of refrigerant flowing). | |
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| ● During operation, a slight squeaking sound may be heard. This is the |
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| result of minute expansion and contraction of the front panel due to |
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| temperature changes. |
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| ● During Heating operation, a sizzling sound may be heard occasional. | 23 |
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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 re- | — |
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| sult of room smells (furniture, tobacco, etc.) which have been taken | |
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| into the indoor unit. |
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| Mist or steam is emitted: | ● During Cooling or Dry operation, a thin mist may be seen emitted |
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| from the indoor unit. This results from the sudden Cooling of room air | — |
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| by the cool air emitted from the indoor unit, resulting in condensation | |
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| and misting. |
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| ● During Heating operation, the outdoor unit’s fan may stop, and steam | 23 |
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| may be seen rising from the unit. This is due to Automatic Defrosting | |
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| operation. |
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| Airflow is weak or stops: | ● When Heating operation is started, fan speed is temporarily very low, |
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| to allow internal parts to warm up. |
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| ● During Heating operation, if the room temperature rises above the | — |
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| temperature setting, the outdoor unit will stop, and the indoor unit will | |
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| operate at very low fan speed. If you wish to warm the room further, |
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| set the temperature for a higher setting. |
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| ● During Heating operation, the indoor unit will temporarily stop opera- |
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| tion (Max.15 minutes) as the Automatic Defrosting mode operates. | 23 |
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| During Automatic Defrosting operation, the OPERATION Indicator | |
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| Lamp will flash. |
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| ● During Dry mode, the indoor unit will operate at low speed; in order |
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| to adjust room humidity, the indoor unit’s fan may stop from time to | 8 |
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| time. Also, the fan may operate at very low speed when adjusting | |
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| room humidity. |
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| ● During SUPER QUIET operation, the fan will operate at very low speed. | 7 |
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| ● In the monitor of AUTO operation, the fan will operate at very low | 8 |
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| speed. | |
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| Water is produced from | ● During Heating operation, water may be produced from the outdoor | 23 |
| the outdoor unit: | unit due to Automatic Defrosting operation. | |
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