Mitsubishi Electric Mr. Slim PKA Series Service Manual page 20

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>
CHECK
CHECK
display
TEMP
ON/OFF
ON/OFF
button
AUTO STOP
FAN
MODE AUTO START
VANE
CHECK LOUVER
CHECK
TEST RUN
button
SET RESET CLOCK
OCH660A
[Procedure]
Refrigerant
1. Press the CHECK button twice.
address
• "CHECK" lights, and refrigerant address "00" blinks.
display
• Check that the remote controller's display has stopped before
continuing.
Temperature
2. Press the TEMP
button
• Select the refrigerant address of the indoor unit for the self-diagnosis.
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.
HOUR
• If an air conditioner error occurs, the indoor unit's sensor emits an
button
h
intermittent buzzer sound, the operation light blinks, and the check
code is output.
min
(It takes 3 seconds at most for check code to appear.)
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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