Panasonic U-4LE1E5 Service Manual page 93

3. Mini VRF System Alarm Codes
• The '/' in the table indicates the DC motor's indoor unit board/AC motor's indoor unit board.
•
There is no TEST pin on the AC motor's indoor unit board.
•
Regarding the remote controller check, refer to the Reference Materials.
•
For information on the procedures for replacing the nonvolatile memory (EEPROM) of the indoor unit and/or replacing the
indoor unit's control board, refer to the manual that is packaged with the indoor unit service board.
(for single-phase outdoor unit PCB)
TERMINAL
CHK Pin
OPTION
DC Motor Model Indoor unit Control Board
LED TEST Pin
RC
(for 3-phase outdoor unit PCB)
TERMINAL
AC Motor Model Indoor unit control Board
5 - 13
Mini VRF SYSTEM
Trouble Diagnosis
OPTION
LED
CHK Pin RC
5