Mitsubishi Electric MSZ-G09SV Service Manual page 68

MSZ-G20SV -
E1
Start
Indoor unit
operates.
Outdoor unit
doesn't
operate.
Outdoor unit
doesn't
Outdoor unit
operate
operates in
even in
only Test Run
Test Run
operation.
operation.
Check room
temperature
Refer to Y
thermistor.
"Check of
Refer to
inverter/
"Test point
compressor"
diagram and
on page 88.
voltage" on
page 91.
2-time flash
Flash on and
Cause:
off at
Indoor unit
0.5-second
• Trouble of
intervals
room temp-
Cause:
erature/
Indoor/
indoor coil
Outdoor unit
thermistor
• Mis-wiring
Refer to V Check room
temperature
"How to
thermistor
check of
and indoor
mis-wiring
coil thermis-
(When
tor.
outdoor unit
Refer to
doesn't work)"
"Test point
on page 86.
diagram and
voltage"
on page 91.
Unit doesn't
Indoor unit
operate
operates, when
normal
the EMERGENCY
operation in
OPERATION
COOL or
switch is pressed.
HEAT mode.
Refer to S
"Check of
Refer to W
remote controller
"Check of
and receiver
R.V. coil"
P.C. board"
on page 87.
on page 84.
3-time flash 4-time flash
Cause: Cause:
Indoor unit Indoor unit
• Trouble of • Trouble of
indoor fan indoor unit
motor
control
system
Refer to R
Replace the
"Check of indoor
indoor fan electronic
motor" control
on page 84. P.C. board.
Indoor unit
OPERATION INDICATOR
doesn't receive
lamp on the indoor unit is
the signal from
flashing on and off.
remote controller.
Indoor unit
doesn't operate,
when the
EMERGENCY
OPERATION
switch is pressed.
1. Check indoor / outdoor
connecting wire.
(Check if the power
is supplied to the
indoor unit.)
2. Refer to T
"Check of indoor
electronic control
P.C. board"
on page 85.
5-time flash 6-time flash
Cause: Cause:
Outdoor unit Outdoor unit
• Outdoor • Trouble of
power thermistor
system in outdoor
abnormality unit
Refer to Y
Refer to Z
"Check of
"Check of
inverter/
outdoor
compressor"
thermistor"
on page 88.
on page 89.
68
7-time flash
10-time flash
Cause: Cause:
Outdoor unit Outdoor unit
• Trouble of • Outdoor
outdoor refrigerant
control system
system abnormality
Refer to W,X
Replace the
outdoor or .
AA
electronic Check
control
outdoor
P.C. board.
refrigerant
system
related items
on page 87,
88 or 89.