3. Outdoor unit failure mode table
2-time flash
2.5 seconds OFF
3-time flash
2.5 seconds OFF
4-time flash
2.5 seconds OFF
5-time flash
2.5 seconds OFF
6-time flash
2.5 seconds OFF
7-time flash
2.5 seconds OFF
8-time flash
2.5 seconds OFF
9-time flash
2.5 seconds OFF
10-time flash
2.5 seconds OFF
11-time flash
2.5 seconds OFF
12-time flash
2.5 seconds OFF
14-time flash
2.5 seconds OFF
None (Normal)
Outdoor power system
Discharge temperature thermistor
Defrost thermistor (MUZ)
Fin temperature thermistor
P.C. board temperature thermistor
Ambient temperature thermistor
Overcurrent
Compressor synchronous
abnormality (Compressor start-up
failure protection)
Discharge temperature
High pressure
Fin temperature/ P.C. board
temperature
Outdoor fan motor
Nonvolatile memory data
Discharge temperature
DC voltage
Each phase current of compressor
Overcurrent
Compressor open-phase
Outdoor unit
(Other abnormality)
Abnormal point
(Failure mode / protection)
When it consecutively occurs 3 times
that the compressor stops for
overcurrent protection within
1 minute after stat-up.
When thermistor shorts or opens
during compressor running.
When 24A(A09/12) / 26.5A(A15/17)
current flow into intelligent
power module.
When waveform of compressor current
is distorted.
When temperature of discharge
temperature thermistor exceeds 241°F
(116:), compressor stops.
Compressor can restart if discharge
temperature thermistor reads 212°F
(100:) or less 3 minutes later.
When temperature of indoor coil
thermistor exceeds 158°F(70:) in
HEAT mode (MUZ).
When defrost thermistor exceeds 158°F
(70:) in COOL mode.
When temperature of fin temperature
thermistor on the inverter P.C. board
exceeds 180°F(82:)(A09/12)/188°F
(86.5:)(A15/17), or temperature of P.C.
board temperature thermistor on the
inverter P.C. board exceeds 176°F
(80:).
When outdoor fan has stopped 3 times
in a row within 30 seconds after outdoor
fan start-up.
When nonvolatile memory data cannot
be read properly.
When temperature of discharge tempe-
rature thermistor has been 122°F(50:)
or less for 20 minutes
.
When DC voltage of inverter cannot be
detected normally.
When each phase current of compre-
ssor cannot be detected normally.
When 24A(A09/12) / 26.5A(A15/17)
current flow into intelligent power
module (IPM).
When the open-phase operation of
compressor is detected.
When the interphase short out occurs in
the output of the intelligent power
module (IPM).
When the compressor winding shorts out.
When the inverter P.C. board is
defective.
Condition
•Reconnect connectors.
•Refer to 10-5. A"How to
check inverter/
compressor".
•Check stop valve.
•Refer to 10-5.
G"Check
of outdoor thermistors".
❈Defective outdoor
thermistors can be
identified by checking
the blinking pattern
of LED.
•Reconnect compressor
connector.
•Refer to 10-5.A"How to
check inverter/
compressor".
•Check stop valve.
•Reconnect compressor
connector.
•Refer to 10-5.A"How to
check inverter/
compressor".
•Check refrigerant circuit
and refrigerant amount.
•Refer to 10-5.L"Check
of LEV".
•Check refrigerant circuit
and refrigerant amount.
•Check stop valve.
•Check around outdoor unit.
•Check outdoor unit air
passage.
•Refer to 10-5.I"Check of
outdoor fan motor".
•Refer to 10-5.I"Check of
outdoor fan motor".
Refer to 10-5.M"Check of
inverter P.C. board".
•Replace the inverter P.C.
board.
•Refer to 10-5.L"Check
of LEV".
•Check refrigerant circuit
and refrigerant amount.
•Refer to 10-5.A"How to
check inverter/
compressor".
•Reconnect compressor
connector.
•Refer to 10-5. A"How to
check inverter/
compressor".
•Replace the inverter P.C.
board.
Correspondence
Indoor/outdoor
unit failure mode
recall function
Outdoor unit
failure mode
recall function
1-time flash every
2.5 seconds
3-time flash
2.5 seconds OFF
4-time flash
2.5 seconds OFF
2-time flash
2.5 seconds OFF
11-time flash
2.5 seconds OFF
12-time flash
2.5 seconds OFF
7-time flash
2.5 seconds OFF
5-time flash
2.5 seconds OFF
8-time flash
2.5 seconds OFF
9-time flash
2.5 seconds OFF
10-time flash
2.5 seconds OFF
LED indication
(Outdoor P.C. board)
OFF
The left lamp of
OPERATION INDICATOR
lamp(Indoor unit)
To Next Page
Loading...
