Mitsubishi Electric MR. SLIM PCA Series Service Manual page 26

9-2. MALFUNCTION-DIAGNOSIS METHOD BY REMOTE CONTROLLER
<In case of trouble during operation>
When a malfunction occurs to air conditioner, both indoor unit and outdoor unit will stop and operation lamp blinks to inform
unusual stop.
<
Malfunction-diagnosis method at maintenance service>
■ Wireless remote controller (Option)
CHECK
CHECK
display
ON/OFF TEMP
ON/OFF
button
FAN AUTO STOP
MODE AUTO START
VANE
CHECK LOUVER
CHECK
TEST RUN
button
RESET
SET CLOCK
OCH659A
[Procedure]
1. Press the CHECK button twice.
Refrigerant • "CHECK" lights, and refrigerant address "00" blinks.
address
• Check that the remote controller's display has stopped before
display
continuing.
2. Press the TEMP
Temperature
• Select the refrigerant address of the indoor unit for the self-diagnosis.
button
Note: Set refrigerant address using the outdoor unit's DIP switch (SW1).
(For more information, see the outdoor unit installation manual.)
3. Point the remote controller at the sensor on the indoor unit and press
the HOUR button.
• If an air conditioner error occurs, the indoor unit's sensor emits an
HOUR
intermittent buzzer sound, the operation light blinks, and the check
button
h
code is output.
(It takes 3 seconds at most for check code to appear.)
min
4. Point the remote controller at the sensor on the indoor unit and press
the ON/OFF button.
• The check mode is cancelled.
buttons.
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