MITSUBISHI ELECTRIC MSZ-FA35VA - Manual (Page 19)

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Lighted
Blinking
Not lighted
Lighted
Blinking
Not lighted
Lighted
Blinking
Not lighted
· Flashing of AREA lamp(left-hand side lamp) indicates abnormality.
NOTE : When the indoor unit has started operation and the above detection method has detected an abnormality (the first
detection after the power ON), the indoor electronic control P.C. board turns OFF the indoor fan motor with
OPERATION INDICATOR lamp flashing.
No.
1
Symptom Operation indicator lamp Detection method Check point
Abnormal
point
Left lamp of AREA lamp flashes.
4-time flash
2.5-second OFF
Indoor
control
system When it cannot properly read data in the
nonvolatile memory of the indoor electronic
control P.C. board.
Indoor unit
and outdoor
unit do not
operate.
• Replace the indoor electronic
control P.C. board.
No.
1
Symptom Operation indicator lamp Detection method Check point
Abnormal
point
0.5-second ON
0.5-second OFF
When the electricity is not conducted to the
interlock switch (Fan) of the horizontal vane.
• Refer to 9-6. E "Check of
installation of the horizontal
vane".
Indoor unit
and outdoor
unit do not
operate. Attachment
of the
horizontal
vane
All lamps flash at the same time.
No. Symptom Operation indicator lamp Detection method Check point
Abnormal
point
1
MXZ type
Operation
mode
setting Outdoor unit
operates but
indoor unit
does not
operate. When the operation mode of the each indoor
unit is differently set to COOL(includes DRY)
and HEAT at the same time, the operation
mode of the indoor unit that has operated at
first has the priority.
• Unify the operation mode.
Refer to service manual
OB377.
2.5-second OFF
Both lamps flash
· Flashing of All lamps indicate abnormality.
· Flashing of AREA lamp(both lamps) indicates abnormality.
· POWER lamp is lighted.
NOTE : Before taking measures, make sure that the symptom reappears for accurate troubleshooting.
Self check table
Lighted
Blinking
Not lighted
· Flashing of PLASMA/WASH lamp indicates abnormality.
No.
1
Symptom Operation indicator lamp Detection method Check point
Abnormal
point
PLASMA/WASH lamp flashes.
2-time flash
2.5-second OFF
When PLASMA DEODORIZING power or
PLASMA AIR PURIFYING power can not be
turned OFF.
Indoor unit
and outdoor
unit do not
operate.
PLASMA
DEODORIZING/
PLASMA
AIR
PURIFYING
power control
• Replace the indoor electronic
control P.C. board.
OB371_--1qxp 05.1.17 12:50 Page 19