Mitsubishi Electric Mr.SLIM PCA Series Service Manual page 15

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>
■ IR wireless remote controller
CHECK
CHECK
display
ON/OFF TEMP
ON/OFF
button
FAN AUTO STOP
MODE VANE AUTO START
CHECK LOUVER
CHECK
TEST RUN min
button
SET RESET CLOCK
■ Wired remote controller
ERROR CODE
TEMP. ON/OFF
MENU ON/OFF
FILTER
BACK MONITOR/SET DAY
CHECK
PAR-21MAA CLOCK OPERATION CLEAR
OCH501
[Procedure]
1. Press the CHECK button twice.
Refrigerant
address
display
2. Press the temperature
Temperature
buttons.
button
3. Point the remote controller at the
HOUR
sensor on the indoor unit and
button
h
press the HOUR button.
4. Point the remote controller at the
sensor on the indoor unit and
press the ON/OFF button.
ERROR CODE
TEST
ERROR CODE
• "CHECK" lights, and refrigerant
• Check that the remote controller's
• Select the refrigerant address of the
Note: Set refrigerant address using the
• If an air conditioner error occurs, the
• The check mode is cancelled.
Turn on the power.
Press the [CHECK] button twice.
Set address with [TEMP] button if system control is used.
Press the [ON/OFF] button to stop the self-check.
CHECK button
Address
TEMP. button
IC : Indoor unit
OC: Outdoor unit
Check code – – – – : No trouble generated in the past.
F F F F : No corresponding unit.
Unit No.
Timer ON/OFF button
<To delete check code>
Display the error code on the self-check result display screen.
The address for self-check will blink when the
button is pressed twice within 3 seconds.
15 15
address "00" blinks.
display has stopped before continuing.
indoor unit for the self-diagnosis.
outdoor unit's DIP switch (SW1).
(For more information, see the
outdoor unit installation manual.)
indoor unit's sensor emits an intermit-
tent buzzer sound, the operation lamp
blinks, and the error code is output.
(It takes 3 seconds at most for error
code to appear.)
To be continued to the next page.
ON/OFF