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12-1 HOW TO DIAGNOSE FOR PROBLEMS
With the power on. Troubles can be monitored on the remote controller.
The fault diagnosis for the BRC1E model remote controller should be performed while referring to the
installation manual supplied with the remote controller. For the other remote controllers, perform the fault
diagnosis using the following procedure.
■
Trouble shooting with the remote controller liquid crystal display.
1 With the remote controller. (NOTE 1)
When the operation stops due to trouble, the operation lamp flashes, and the liquid crystal display
indicates “
” and the malfunction code. Diagnosis can be carried out using the malfunction code
list according to the indicated malfunction code.
In addition, when in group control it indicates the unit No., so the malfunction detected unit No. will
be clarified for resetting the malfunction, see (NOTE 2).
NOTE
1. When the INSPECTION/OPERATION button on the remote controller is pressed, the “
” indication
starts flashing.
2. When the ON/OFF button is kept pressed for 5 seconds or longer during the inspection mode, the
above trouble history indication disappears. In this case, after the malfunction code indication
flashes twice, the indication of code becomes “00” (normal) and unit NO. becomes “0”. Then, the dis-
play automatically changes from the inspection mode to the normal mode.
12-2 MALFUNCTION CODE
•
For places where the malfunction code is left blank, the “
” indication is not displayed. Though the
system continues operating, be sure to inspect the system and make repairs as necessary.
•
Depending on the type of indoor or outdoor unit, the malfunction code may or may not be displayed.
Malfunction
code
Descriptions and measures
Remarks
A0
Fault diagnosis by remote controller
show the code A0 on the display of
remote controller.
Is it making beeping sound?
If it is making sound:
There is a risk of refrigerant leakage. Please
ventilate the room and contact your dealer.
If it is not making sound:
There is no refrigerant leakage, or it is still
doing detection. Please wait a few minutes.
Sometimes, the refrigerant sensor detects by
mistake substances other than refrigerant,
such as insecticides or hairsprays (only for
R32 refrigerant).
A1
Indoor printed circuit board failure
A3
Drain level abnormal
A6
Indoor fan motor overload, over current,
lock
Indoor printed circuit board connection
failure
AF
Humidifier system malfunction
AH
Air purifier (dust collection,
deodorization) unit malfunction
Only the air purifier (dust collection,
deodorization) unit does not function.
Abnormal stop is applied depending on the
model or condition.
AJ
Capacity setting failure
Capacity setting adapter or capacity data
error, or disconnection of the capacity setting
adapter, failure to connect the adapter, or the
capacity is not set to the data-retention IC.
3PEN486970-1D.book Page 29 Monday, July 24, 2017 8:54 AM