Mitsubishi Electric Mr.Slim PLA-A24EA7 Service Manual page 19

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
ON/OFF TEMP
ON/OFF
button
FAN AUTO STOP
AUTO START
MODE VANE
CHECK LOUVER h
CHECK TEST RUN min
button
SET RESET CLOCK
OCH640C
[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 continuing.
display
2. Press the TEMP
• Select the refrigerant address of the indoor unit for the self-diagnosis.
Temperature
Note: Set refrigerant address using the outdoor unit's DIP switch (SW1).
button
(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 inter-
mittent buzzer sound, the operation lamp blinks, and the check code is
HOUR
output. (It takes 3 seconds at most for check code to appear.)
button
4. Point the remote controller at the sensor on the indoor unit and press the
ON/OFF button.
• The check mode is cancelled.
19 19
buttons.
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