Mitsubishi Electric M Series Manual page 163

M series
MUZ-FD25VA MUZ-GE25VA
MUZ-FD25VABH MUZ-GE25VAH
MUZ-FD35VA MUZ-GE35VA
MUZ-FD35VABH MUZ-GE35VAH
MUZ-FD50VA
MUZ-FD50VAH
Flow chart of the detailed outdoor unit failure mode recall function
Operational procedure
The outdoor unit might be abnormal.
Confirm if outdoor unit is abnormal according to the following procedures.
Confirm that the remote controller is in the failure mode recall function.
With the remote controller headed towards the indoor unit, press TOO
COOL or TOO WARM button (MSZ-FD, MSZ-GE25/35/42/50, MSZ-HC)/
TEMP button (MSZ-GE60/71) to adjust the set temperature to 25°C.
Does POWER (MSZ-FD)/the upper (MSZ-GE, MSZ-
HC) lamp of OPERATION INDICATOR lamp on the
indoor unit blink at the interval of 0.5 seconds?
Blinks: The outdoor unit is abnormal.
Beep is emitted at the same timing as the
blinking of POWER (MSZ-FD)/the upper (MSZ-
GE, MSZ-HC) lamp of OPERATION INDICA-
TOR lamp.
The outdoor unit is abnormal.
Check the blinking pattern, and confirm the abnormal point with the out-
door unit failure mode table.
Make sure to check at least two consecutive blinking cycles. 2
Releasing the failure mode recall function
Release the failure mode recall function by the following procedures.
Turn OFF the power supply and turn it ON again.
Press RESET button of the remote controller.
Deleting the memorized abnormal condition
After repairing the unit, recall the failure mode again according to "Setting up the failure mode recall
function".
Press OPERATE/STOP (ON/OFF) button of the remote controller (the set temperature is displayed) with
the remote controller headed towards the indoor unit.
Press EMERGENCY OPERATION switch so that the memorized abnormal condition is deleted.
Release the failure mode recall function according to "Releasing the failure mode recall function" men-
tioned above.
NOTE: 1. Make sure to release the failure mode recall function once it is set up, otherwise the unit cannot operate properly.
2. If the abnormal condition is not deleted from the memory, the last abnormal condition is kept memorized.
2.Blinking pattern when outdoor unit is abnormal:
2.5-second OFF 3-second ON
ON
OFF
Repeated cycle
MUZ-GE42VA
MUZ-GE42VAH
MUZ-GE50VA
MUZ-GE50VAH
Yes (Blinks
)
Repair the defective parts.
Blinking at 0.5-
second interval
No beep
Beeps
WALL-MOUNTED Inverter Heat Pump
MUZ-GE60VA MUZ-HC25VA
MUZ-GE71VA MUZ-HC35VA
MUZ-HC35VAB
1
1. Regardless of normal or abnormal condition, 2 short
beeps are emitted as the signal is received.
No
(OFF)
Release the failure mode recall function accord-
ing to the left mentioned procedure.
2.5-second OFF 3-second ON
No beep
Repeated cycle
The outdoor unit is normal.
Blinking at 0.5-
second interval
Beeps
Repeated cycle
C-161