Panasonic 2WAY Multi - E13 Indoor Unit Transmission Failure to Remote Controller

IV–49
E13 Indoor Unit Transmission Failure to Remote controller
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Error detection method
When a signal transmitted from the indoor unit (water heat exchanger unit) to the remote controller cannot be
self-received, an error is determined.
• Indoor unit (water heat exchanger unit) control board is defective.
• Short-circuit or broken wires in remote controller wiring 1 (white) and 2 (black) (with indoor unit connected)
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Troubleshooting
1
Equipment
check
1-1 What units are connected?
Indoor unit 2-1
Water heat exchanger
unit
3-1
2
Indoor unit’s
control board
2-1
Are remote controller wires 1 (white) or 2 (black) short-
circuited or severed?
Yes Repair Wiring
No 2-2
2-2 Replace the indoor unit’s control board.
3
Water heat
exchange unit’s
control board
3-1
Are remote controller wires TB5-4 or TB-5-5 short-
circuited or miss-wired?
Yes Repair Wiring
No 3-2
3-2 Replace the water heat exchanger unit’s control board.
● See instructions packaged with servicing indoor board for procedure on replacing indoor control board.
● See “5. Reference Document” for details on the procedure for replacing the water heat exchanger unit’s
control board.
GHPtroubleshooting.indbIV‒49GHPtroubleshooting.indbIV‒49 2012/11/2611:20:102012/11/2611:20:10