E05 Indoor Unit Transmission Failure To Outdoor Unit - Panasonic 2WAY Multi Technical & Service Manual

E05 Indoor Unit Transmission Failure to Outdoor Unit

Error detection method
When a self-transmitted signal cannot be self-received, an error is determined.
• Indoor (water heat exchanger unit) control board is defective.
• Outdoor main board terminal resistor switch setting is incorrect.
Troubleshooting
1
Is the indoor/outdoor operation wiring connected to
1-1
Indoor control
multiple outdoor units? (Link wiring?)
board
Is the S010 (terminal resistor) switch on one outdoor main
1-2
board set to "ON" and the remainder to "OFF"?
Is the outdoor main board S010 (terminal resistor) switch
1-3
set to "OFF"?
1-4 Indoor/outdoor operation wiring broken or short-circuited?
1-5 Replace indoor (water heat exchanger unit) 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.
IV–40
Yes 1-2
No 1-3
Yes 1-4
No Set only one unit to "ON"
Yes Set to "ON"
No 1-4
Yes Repair wiring
No 1-5