Mini VRF SYSTEM
Trouble Diagnosis
3
3-9
3. Mini VRF System Alarm Codes
E02 Remote Controller Transmission Error
Error Detection Method
Error Diagnosis
When the remote controller itself cannot transmit. Or when it cannot receive the signal it transmitted itself, or when they are
different and judged an error.
Malfunction of the remote controller itself (transmit circuit error)
•
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.
•
1.
2.
2
2-2
2-4
Is the wireless remote controller and/or optional control PC board
connected to on the indoor unit’s control PC board?
Is the indoor unit under group control?
1-1
Are the wires 1 (white) & 2 (black) to the remote control group
shorted or opened?
1-2
2-1
Disconnect the connector mentioned above on the board of the
indoor unit control PC board, and see whether the E02 goes off after
several minutes. (When doing so, if two remote controllers are
being used and the wireless remote controller is the main remote
controller, set the other remote controller as the main.)
2-2
1-2
2-1
Correct the wiring
2-1
2-3
2-4
Yes
Yes
Yes
No
No
No
Replace all optional control PC board and/or wireless remote control parts including wiring.
2-3
Is there a short, miswiring, open, wrong contact or grounding
in the remote control’s wiring?
2-4
Correct the wiring
Replace the indoor
unit’s control PC
board
Yes
No
Group
Control
Wiring
1 Remote
Control
Group
Wiring
Yes
No
OPTION
AC Motor Model Indoor unit Control Board
OPTION
DC Motor Model Indoor unit Control Board
SM830209-00̲Mini̲VRF SYS.indb 9
SM830209-00̲Mini̲VRF SYS.indb 9
2012/01/11 18:24:32
2012/01/11 18:24:32
