Malfunction-Diagnosis Method By Remote Controller - Mitsubishi Electric PEY Series Service Manual

TROUBLESHOOTING

9-2. Malfunction-diagnosis method by remote controller

<1> 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.
<2> Malfunction-diagnosis method at maintenance service
CHECK
CHECK
display
ON/OFF
ON/OFF
button
FAN
MODE VANE
CHECK LOUVER
CHECK
TEST RUN
button
SET RESET
HWE1305A
Refrigerant
address
display
Temperature
button
TEMP
AUTO STOP
AUTO START
HOUR
button
h
min
CLOCK
[Procedure]
(1) Press the CHECK button twice.
• "CHECK" lights, and refrigerant address "00" flashes.
• Check that the remote controller's display has stopped before
continuing.
(2) Press the temperature
• 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.
• 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.)
(4) Point the remote controller at the sensor on the indoor unit and
press the ON/OFF button.
• The check mode is cancelled.
28
buttons.
To be continued to the next page.