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5. Troubleshooting
5-1. When "COLLECTIVE ON/OFF LAMP" and "ERROR
CODE" are flickering
• The air conditioner is stopped because a problem has occurred and operation cannot be
continued.
• Check the address of the unit where the error is occurring and the error code, and call your
nearest MITSUBISHI ELECTRIC supplier or dealer.
The attribute of the faulty unit flickers.
The COLLECTIVE ON/OFF lamp flickers.
The error code will flicker.
The address No. of the faulty unit flickers.
The group No. in which the faulty unit is
registered flickers.
1. If an error occurs while the [COLLECTIVE DISPLAY SCREEN] is displayed, the details of the error for the
group with the first faulty will appear.
2. If an error occurs while the [GROUP STATUS DISPLAY SCREEN] is displayed, only the details of the error
for the currently selected group will appear.
• Confirming the details on an error for a different group
Using the
GROUP
switch, select the group with the error and check the displayed error details.
NOTE If an error occurs in a group other than that displayed on the [GROUP STATUS DISPLAY SCREEN],
the COLLECTIVE ON/OFF lamp will flicker.
5-2. When only the "Error Code" is flickering
• The air conditioner will continue running, but there may be a problem.
• Check the error code and call your nearest MITSUBISHI ELECTRIC supplier or dealer.
The maintenance code flickers.
The selected group No. is displayed.
1. If an error occurs while the [COLLECTIVE DISPLAY SCREEN] is displayed, the details of the error for the
group with the first problem will appear.
2. If an error occurs while the [GROUP STATUS DISPLAY SCREEN] is displayed, only the details of the error
for the currently selected group will appear.