
(3) Serial Communication Error Identification Procedure
If the lamps on the main body show the following conditions after the completion of
In such a case, identify the breakdown section by using the following procedure.
NOTE Refer to "Method of
Lamp | Quiet | Timer | Operation |
Condition | (3) | (2) | (1) |
E01 |
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E12 |
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< Before the Operation >
: Off
: Blinking
: Illuminated
WARNING
CAUTION
For terminal strip short circuit work or
Release the terminal strip short circuit after the completion of
Do not perform the
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< Convenient Tool for |
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Alligator Clip | ||||||||
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< Check Items before Troubleshooting Serial Communication Start >
After confirming that the following errors do not exist, start the "Troubleshooting Serial Communication" in "Condition: E01 and E12".
1. | Mis | 6. | Reactor failure (defective insulation, etc.) |
2. | AC power failure | 7. | |
3. | Blown fuse | 8. | Overload Relay failure |
4. | Power Relay failure | 9. | Magnetic Coil failure (defective insulation, |
5. | Outdoor Fan Motor failure (defective insulation, etc.) | 10. Compressor failure (defective insulation, etc.) | |
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(3-1) Condition: E01
Troubleshooting Serial Communication
Is the voltage of about DC12V
or more given between the terminals
2 and 3 on the outdoor unit terminal strip
(Serial Communication Line) ?
(Fig. 1)
Yes
A
( Continued to the next page A. )
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| Fig. 2 |
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1.Turn OFF the power and wait until the power lamp (LED)
No of the outdoor unit controller is turned OFF.
2.Disconnect the cable from the terminal 3 on the indoor unit
terminal strip. | (Fig. 2) |
3. Turn ON the power. |
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( Continued to the next page B. )
51