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10-4. AUTO LINE CORRECTING
Outdoor unit has an auto line correcting function which automatically detects and corrects improper wiring or piping.
Improper wiring or piping can be automatically detected by pressing the piping/wiring correction switch (SW871).
When improper wiring or piping is detected, wiring lines are corrected.
This will be completed in about 10 to 20 minutes.
[How to activate this function]
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2. Check that the stop valves of the liquid pipe and gas pipe are open.
3. Check that the wiring between indoor and outdoor unit is correct.
(If the wiring is not correct, this function does not work.)
4. Turn ON the power supply and wait at least 1 minute.
5. Press the piping/wiring correction switch (SW871) on the outdoor control P.C. board.
Do not touch energized parts.
6. Press the switch to cancel.
NOTE:
Indoor unit cannot be operated while this function is activated.
When this function is activated while indoor unit is operating, the operation will be stopped.
Operate indoor unit after the auto line correcting is finished.
Pressing the switch during detection cancels this function.
Make sure that the valves are open and the pipes are not collapsed or clogged.
LED indication after cancel :
LED1 (Red)
Lighted
LED indication during detection:
LED indication after detection:
LED2 (Yellow)
Lighted
LED3 (Green)
Once
LED1 (Red)
Lighted
LED2 (Yellow)
Lighted
LED3 (Green)
Not lighted
LED1 (Red)
Lighted
Once
LED2 (Yellow)
Not lighted
Once
Other indications
LED3 (Green)
Lighted
Once
Completed (Problem corrected/ normal)
Not completed (Detection failed)
Refer to "SAFETY PRECAUTIONS WHEN LED FLASHES"
located behind the service panel.
Indication
Press the switch for more than 5 seconds.
LED will show the record of auto correcting for about 30 seconds as shown in the table below:
NOTE:
Activate this function to confirm the correct wiring after replacing the outdoor control P.C. board.
(Previous records are deleted when the outdoor control P.C. board is replaced.)
The record cannot be shown if auto line correcting is not canceled (Refer to "How to activate this function").
LED1 (Red)
Once
3 times
LED2 (Yellow)
Once
3 times
LED3 (Green)
Lighted
Lighted
Not corrected
Corrected
Number of blinks
Wiring line
The record of auto line correcting can be confirmed in the following way:
OBH723C
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