Mitsubishi Electric MSZ-FA25VA Service Manual page 19

Abnormal
No. Operation indicator lamp
point
Left lamp of AREA lamp flashes.
Indoor
4-time flash
control
1
system
2.5-second OFF
Abnormal
No. Operation indicator lamp
point
All lamps flash at the same time.
Attachment
0.5-second ON
of the
1
horizontal
vane
0.5-second OFF
Abnormal
No. Operation indicator lamp
point
Both lamps flash
MXZ type
Operation
1
mode
2.5-second OFF
setting
Abnormal
No.
Operation indicator lamp
point
PLASMA
PLASMA/WASH lamp flashes.
DEODORIZING/
2-time flash
PLASMA
1
AIR
PURIFYING
power control
2.5-second OFF
· Flashing of AREA lamp(left-hand side lamp) indicates abnormality.
Lighted
Blinking
Not lighted
Symptom
Indoor unit
and outdoor
unit do not
operate.
· Flashing of All lamps indicate abnormality.
Lighted
Blinking
Not lighted
Symptom
Indoor unit
and outdoor
unit do not
operate.
· Flashing of AREA lamp(both lamps) indicates abnormality.
Lighted
· POWER lamp is lighted.
Blinking
Not lighted
Symptom
Outdoor unit
operates but
indoor unit
does not
operate.
· Flashing of PLASMA/WASH lamp indicates abnormality.
Lighted
Blinking
Not lighted
Symptom
Indoor unit
and outdoor
unit do not
operate.
Condition
When it cannot properly read data in the
nonvolatile memory of the indoor electronic
control P.C. board.
Condition
When the electricity is not conducted to the
interlock switch (Fan) of the horizontal vane.
Condition
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.
Condition
When PLASMA DEODORIZING power and/or
PLASMA AIR PURIFYING power can not be
turned OFF even if the PLASMA operation is
turned OFF with remote controller.
19
Correspondence
• Replace the indoor electronic
control P.C. board.
Correspondence
• Refer to 9-6.E "Check of
installation of the horizontal
vane".
Correspondence
• Unify the operation mode.
Refer to outdoor unit service
manual.
Correspondence
•Refer to 9-6.F"Check of
PLASMA DEODORIZING
power" or 9-6.G"Check of
PLASMA AIR PURIFYING
power".