Mitsubishi Electric PUZ-A NHA Series Service Manual page 15

10-2. MALFUNCTION-DIAGNOSIS METHOD BY REMOTE CONTROLLER
<In case of trouble during operation>
When a malfunction occurs to the 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 h
CHECK min
TEST RUN
button
RESET
SET CLOCK
[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
press the HOUR button.
4. Point the remote controller at the
sensor on the indoor unit and
press the ON/OFF button.
15
• "CHECK" lights, and refrigerant
address "00" blinks.
• 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 intermit-
tent 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.