Panasonic 2WAY Multi - E16 Automatic Address Alarm (too Many Units

IV–52
E16 Automatic Address Alarm (Too Many Units)
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Error detection method
An error is determined when the indoor unit count (water heat exchanger units) responding to transmission
exceeds the indoor unit count (water heat exchanger units) set on the outdoor unit. (Also detected apart from
auto-addressing.)
• The actual number of indoor units exceeds the number of indoor units set on the outdoor unit (with indoor
unit connected).
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Troubleshooting
1) When the indoor unit is connected
1
Autoaddress
1-1 Perform pre-check before auto-addressing. (See “5. Reference Document”)
2) When the water heat exchanger unit is connected
1
Power supply
1-1
Is the power to the water heat exchanger unit’s switched
off?
Yes Switch on the power
No 2-1
2
Indoor/outdoor
operation wiring
2-1
Is the indoor/outdoor operation wiring severed or short-
circuited?
Yes Repair Wiring
No 2-2
2-2
Is high voltage (AC200V, etc.) being applied to the indoor/
outdoor operation wiring circuits?
Yes 4-1
No 3-1
3
Water heat
exchanger unit
count
3-1
Has the number of connected indoor units set with the
No.10 parameter on the outdoor unit’s main board been
amended to a fi gure other than two?
Yes 3 -2
No
Reset the outdoor unit’s
power supply
3-2
Set the number of connected indoor units to two with the No.10 parameter on the outdoor
unit’s main board.
4
Remote
controller wires
(link wiring
between
the remote
controller and
the water heat
exchanger unit)
4-1
Is the water heat exchanger unit’s control board 2P-13
already in use?
Yes
Replace the water heat
exchanger unit’s control
board
No
Reverse the water heat
exchanger unit’s control
board connectors (2P-12
→ 2P-13)
● See “5. Reference Document” for details on the procedure for replacing the water heat exchanger unit’s
control board.
GHPtroubleshooting.indbIV‒52GHPtroubleshooting.indbIV‒52 2012/11/2611:20:102012/11/2611:20:10