Mitsubishi Electric Mr. Slim PCA Series Service Manual page 18

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
CHECK
TEST RUN min
button
RESET
SET CLOCK
OCH585
[Procedure]
1. Press the CHECK button twice.
Refrigerant
address
display
2. Press the TEMP
Temperature
button
3. Point the remote controller at the
sensor on the indoor unit and
HOUR
press the HOUR button.
button
h
4. Point the remote controller at the
sensor on the indoor unit and
press the ON/OFF button.
CHECK lights, and refrigerant
address 00 blinks.
Check that the remote controller s
display has stopped before continuing.
buttons.
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 intermit-
tent buzzer sound, the operation lamp
blinks, and the check code is output.
(It takes 3 seconds at most for check
code to appear.)
The check mode is cancelled.
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