Mitsubishi Electric M Series Manual page 159

M series
MSZ-FD25VA MSZ-GE22VA
MSZ-FD25VAS MSZ-GE25VA
MSZ-FD35VA MSZ-GE35VA
MSZ-FD35VAS MSZ-GE42VA
MSZ-FD50VA MSZ-GE50VA
MSZ-FD50VAS
Indoor unit failure mode table
w OPERATION INDICATOR lamp
POWER lamp (MSZ-FD)
Upper lamp (MSZ-GE, MSZ-HC)
Left lamp (MSZ-SF)
POWER/Upper/Left lamp of
Abnormal point
OPERATION INDICATOR lamp
(Failure mode)
Not lighted
Room temperature
1-time flash
every 0.5-second thermistor
2-time flash
Indoor coil thermistor
2.5-second OFF
3-time flash
Serial signal
2.5-second OFF
11-time flash
Indoor fan motor
2.5-second OFF
12-time flash
Indoor control system
2.5-second OFF
NOTE : Blinking patterns of this mode differ from the ones of "Troubleshooting check table".
MSZ-FD25VA
MSZ-FD25VAS
MSZ-FD35VA
MSZ-FD35VAS
MSZ-FD50VA
MSZ-FD50VAS
PLASMA operation failure mode table
Abnormal point
POWER lamp
(Failure mode)
1-time flash PLASMA power supply
control
2-time flash Spark discharge
Abnormal electric
3-time flash
discharge error 1
Abnormal electric
4-time flash
discharge error 2
5-time flash PLASMA DEODORIZING
NOTE1 : Blinking patterns of this mode differ from the ones of "Troubleshooting check table".
NOTE2 : As soon as an abnormality is detected, PLASMA operation goes OFF, therefore measuring
instrument which records the voltage wave is required in order to perform the above mentioned voltage
measurement.
NOTE3 : When POWER lamp flashes 1-time or 2-time, please perform PLASMA operation check.
MSZ-GE60VA
MSZ-GE71VA
Normal
The room temperature thermistor short
or open circuit is detected every 8 seconds
during operation.
The indoor coil thermistor short or open
circuit is detected every 8 seconds during
operation.
The serial signal from outdoor unit is
not received for 6 minutes.
The rotational frequency feedback signal is
not emitted for 12 seconds after indoor fan
motor is operated.
It cannot properly read data in the
nonvolatile memory of the indoor electronic
control P.C. board.
PLASMA power supply cannot be turned
OFF even if the PLASMA operation is turned
OFF with the remote controller.
The voltage between CN1
on the PLASMA POWER P.C.board falls
below 1.6 V(spark discharge judgment
voltage).
The voltage between CN1
on the PLASMA POWER P.C.board falls by
0.9 V below the normal voltage value (3 V).
The voltage between CN1
on the PLASMA POWER P.C.board falls
significantly. (0.4 V / 0.5 ms)
The voltage between CN1
on the PLASMA POWER P.C board rises
above the normal voltage value (3 V).
WALL-MOUNTED Inverter Heat Pump
MSZ-HC25VA
MSZ-HC35VA
MSZ-HC35VAB
Condition
—
Condition
(+) and (GND)
(+) and (GND)
(+) and (GND)
(+) and (GND)
MSZ-SF15VA
MSZ-SF20VA
C-157