Malfunction-Diagnosis Method At Maintenance Service - Mitsubishi Electric SUZ-M25VA Technical & Service Manual

11-3-5. Self-diagnosis <Wireless remote controller>
<In case of trouble during operation, except for SLZ model*>
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
OCH684
[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.
Note: Set refrigerant address using the outdoor unit's DIP switch (SW1).
TEMP
button
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 blinks, and the check
code is output.
HOUR
button
(It takes 3 seconds at most for check code to appear.)
h
min
4. Point the remote controller at the sensor on the indoor unit and press the
ON/OFF button.
• The check mode is cancelled.
*
For SLZ model, refer to the indoor unit's service manual.
buttons.
(For more information, see the outdoor unit installation manual.)
30