23
9
TROUBLESHOOTING
Confirmation and check
When a fault occurs in the air conditioner, the check
code and the indoor unit No. will appear on the display
part of the remote controller.
The check code will only be displayed while the unit is
in operation.
If the display disappears, operate the air conditioner
according to the following “Confirmation of error
history” for confirmation.
Confirmation of error history
When a fault occurs in the air conditioner, the error
history can be confirmed with the following procedure.
(The error history is stored in memory and can contain
up to 4 errors).
This history can be confirmed from either the operating
status the or the stop status.
CODE No.
UNIT No.
R.C.
No.
Check code
Indoor unit No. in which
an error occurred
3
2
1
ON / OFF
FAN
TEMP.
SWING/FIX
TIME
MODE
VENT
UNIT
SET
CL
FILTER
RESET TEST
TIMER SET
Procedure
1
2
3
Description
When pushing the
SET
and
TEST
buttons simultaneously for 4 seconds
or more, the display similar to the one shown in the figure to the right
will appear.
If [Service Check] is displayed, the fault code will be stored in the
error history mode.
• 01 (Order of error history) is displayed in CODE No. window.
• Check Code is displayed in the CHECK window.
• The indoor unit address, where the fault has occurred will be
displayed in the UNIT No. window.
When pushing the
TEMP.
buttons, the error history stored within the memory will be displayed in
chronological order.
The numbers displayed within the CODE No. window can vary between 1 and 4. 1 being the most recent fault
and 4 being the oldest.
CAUTION
Do not push the
CL
button as this will erase all of the error history for that indoor unit.
After confirmation, push the
TEST
button. This will return the display back to its original mode.
CODE No.
UNIT No.
R.C.
No.
Summary of Contents for MMU-AP0071MH
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