Mitsubishi Electric Mr.SLIM PCFY Series Service Manual page 21

10-2. 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
FAN AUTO STOP
MODE VANE AUTO START
CHECK LOUVER
CHECK
TEST RUN
button
SET RESET CLOCK
OCH416D
[Procedure]
Refrigerant
1. Press the CHECK button twice.
address
display
Temperature
2. Press the temperature
button
buttons.
HOUR
3. Point the remote controller at
button
h
the sensor on the indoor unit
and press the HOUR button.
min
4. Point the remote controller at
the sensor on the indoor unit
and press the ON/OFF button.
21 21
• "CHECK" lights, and refrigerant address
"00" flashes.
• Check that the remote controller's
display has stopped before continuing.
• 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.)
• If an air conditioner error occurs, the
indoor unit's sensor emits an intermittent
buzzer sound, the operation light
flashes, and the error code is output.
(It takes 3 seconds at most for error
code to appear.)
• The check mode is cancelled.
To be continued to the next page.