D How to check miswiring and serial signal error
Turn OFF the power supply.
Is there rated voltage in the |
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| Check the power supply. | |
power supply? | No |
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Yes
Turn ON the power supply.
Is there rated voltage between outdoor terminal block S1 and
S2?No
Yes
Press EMERGENCY OPERATION switch once.
Does the left lamp of OPERATION INDICA- TOR lamp light up? <Confirmation of the power to the indoor unit>
Yes
Is serial signal error indicated 6 minutes later?
Yes
Check the wiring.
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| Is there any miswiring, poor |
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| contact, or wire disconnec- |
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| Correct them. | ||
No | tion of the indoor/outdoor | Yes |
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| connecting wire? |
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| No |
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A
•Turn OFF
•Turn OFF the power supply and then turn ON again.
•Press EMERGENCY OPERATION switch.
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| Turn OFF the power supply. |
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B | Check once more if the indoor/outdoor |
| 1. Miswiring may damage indoor electronic control P.C. | |||||
connecting wire is not miswiring. |
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| board during the operation. | |||||||
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| Be sure to confirm the wiring is correct before the opera- | |||||
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| and S3. 1 |
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| tion starts. | |||||
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| 3. Be sure to check this within 3 minutes after turning ON. | |||
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| After 3 minutes, LED blinks 6 times. Even when the | |||
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| inverter P.C. board or the outdoor electronic control P.C. | |||
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| Turn ON the power supply. |
| board is normal, LED blinks 6 times after 3 minutes. | ||||
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| Does the LED on the inverter P.C. board or |
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| Replace the inverter P.C. board or |
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| the outdoor electronic control P.C. board |
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| the outdoor electronic control P.C. board. |
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| repeat |
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| ON quick blinking"? 3 |
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| Yes |
| or not |
| 2. Be careful to the residual | |
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| lighted) |
| voltage of smoothing capacitor. | |
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Turn OFF the power supply. |
| Is there any error of the in- |
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Remove the |
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outdoor terminal block S2 and S3. |
| door/outdoor connecting wire, |
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| Replace the indoor/ | |||
Turn ON the power supply. |
| such as the damage of the wire, |
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| outdoor connecting | |||
No | Yes | ||||||||
Is there amplitude of 10 to 20 VDC |
| intermediate connection, poor |
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| wire. | |||
between outdoor terminal block S2 and |
| contact to the terminal block? |
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S3? <Confirmation of serial signal> |
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| Yes |
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| Is there any error of the in- |
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Is there rated voltage between |
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| door/outdoor connecting wire, |
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| Replace the indoor/ | ||||
Is serial signal error indicated 6 minutes later?
Yes
B
No
•Reinstall either the unit or the light each other away.
•Attach a filter on remote control receiving section of the indoor unit.
indoor terminal block S1 and S2? | No | such as the damage of the wire, |
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| outdoor connecting | |||
Yes | ||||||||
<Confirmation of power voltage> |
| intermediate connection, poor |
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| wire. | |||
| Yes |
| contact to the terminal block? |
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| No |
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Replace the indoor electronic control P.C. board.
Be sure to release the
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