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Mini VRF SYSTEM
Trouble Diagnosis
3. Mini VRF System Alarm Codes
Mini VRF SYSTEM
Trouble Diagnosis
4. 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.
•
DC Motor Model Indoor unit Control Board AC Motor Model Indoor unit control Board
LED
LED
CHK Pin TEST Pin
OPTION
OPTION
RC
RCCHK Pin
(for single-phase outdoor unit PCB) (for 3-phase outdoor unit PCB)
TERMINAL TERMINAL
Regarding the PCB photos for individual indoor units, refer to the Section “PCB AND FUNCTIONS” in the
TECHNICAL DATA.
NOTE
SM830195-04_Mini VRF SYS.indb 13 15/02/16 18:01:26
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