FILE NO.
For controlling the air conditioner, the program operations are built in the microcomputer as described in the following table. If a claim is made for running operation, check whether or not it meets to the contents in the following table. When it does, we inform you that it is not trouble of equipment, but it is indispensable for controlling and maintaining of air conditioner.
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No. | Operation of air conditioner |
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| Description |
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1 | When power breaker is turned “ON”, | The OPERATION lamp of the indoor unit flashes when power source | ||
| the operation lamp (Green) of the | is turned on. If [ |
| ] button is operated once, flashing stops. |
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| indoor unit flashes. | (Flashes also in power failure) | ||
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2 | Compressor may not operate even if | The compressor does not operate while compressor restart delay | ||
| the room temperature is within range of | timer | ||
| after power source has been turned on because | |||
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| operates. | ||
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3 | In Dry and ECO. mode, FAN (air flow) | The air flow indication is fixed to [AUTO]. | ||
| display does not change even though |
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| FAN (air flow select) button is operated. |
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4 | Increasing of compressor motor speed | For smooth operation of the compressor, the compressor motor speed | ||
| stops approx. 30 seconds after | is restricted to Max. 41 rps for 2 minutes, and Max.91 rps for 2 minutes | ||
| operation started, and then compressor | to 3 minutes, respectively after the operation has started. | ||
| motor speed increases again approx. |
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| 30 seconds after. |
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5 | The set value of the remote control | If the set value is above the room temperature, Cooling operation is | ||
| should be below the room temperature. | not performed. And check whether battery of the remote control is | ||
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| consumed or not. | ||
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6 | In AUTO mode, the operation mode is | After selecting Cool or Heat mode, select an operation mode again if | ||
| changed. | the compressor keeps stop status for 15 minutes. | ||
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7 | In HEAT mode, the compressor motor | The compressor motor speed may decrease by | ||
| speed does not increase up to the | control (Release protective operation by | ||
| maximum speed or decreases before | exchanger) or current release control. | ||
| the temperature arrives at the set |
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| temperature. |
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11-2. Primary Judgment
To diagnose the troubles, use the following methods.
(1)Judgment by flashing LED of indoor unit
(2)
(3)Judgment of trouble by every symptom
Firstly, use the method (1) for diagnosis. Then, use the method (2) and (3) to diagnose the details of troubles.
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