E16 Automatic Address Alarm (Too Many Units - Panasonic 2WAY Multi Technical & Service Manual

E16 Automatic Address Alarm (Too Many Units)

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).
Troubleshooting
1) When the indoor unit is connected
1
1-1 Perform pre-check before auto-addressing. (See "5. Reference Document")
Autoaddress
2) When the water heat exchanger unit is connected
1
Is the power to the water heat exchanger unit's switched
1-1
Power supply
off?
2
Is the indoor/outdoor operation wiring severed or short-
2-1
Indoor/outdoor
circuited?
operation wiring
Is high voltage (AC200V, etc.) being applied to the indoor/
2-2
outdoor operation wiring circuits?
3
Has the number of connected indoor units set with the
Water heat
3-1 No.10 parameter on the outdoor unit's main board been
exchanger unit
amended to a fi gure other than two?
count
Set the number of connected indoor units to two with the No.10 parameter on the outdoor
3-2
unit's main board.
4
Remote
controller wires
(link wiring
Is the water heat exchanger unit's control board 2P-13
between 4-1
already in use?
the remote
controller and
the water heat
exchanger unit)
● See "5. Reference Document" for details on the procedure for replacing the water heat exchanger unit's
control board.
IV–52
Yes Switch on the power
No 2-1
Yes Repair Wiring
No 2-2
Yes 4-1
No 3-1
Yes 3-2
Reset the outdoor unit's
No
power supply
Replace the water heat
Yes exchanger unit's control
board
Reverse the water heat
exchanger unit's control
No
board connectors (2P-12
→ 2P-13)