– 174 –
No
[L31]
No
No
[P01]
* For the models equipped with AC fan motor only
Ye s
Ye s
Ye s
Ye s
Ye s
No
No
[L30]
Check code CauseCheck code name
Check code
CauseCheck code name
Check code
CauseCheck code name
Abnormal input from the outside
Interlock in indoor unit from
outside
Other IPDU errors
Is outside device
connected to connector
CN80?
Does outside device
correctly operate?
Is there any trouble
of outdoor unit power
supply?
Is there no
connection error or
disconnection of CN076
connector?
Is not there lock of fan
motor?
Check indoor P.C. board.
Failure → Replace
Check outside device.
Failure → Replace
Check power voltage and line.
Check auxiliaty noise, etc.
Correct cabling circuit for
the connector connection.
Replace fan motor.
Check indoor P.C. board.
Failure → Replace
Check outdoor I/F P.C.
board.
Check cause of abnormal
input.
1. Outdoor unit power error
2. Outdoor I/F P.C. board error
Indoor fan motor error
1. Wiring error
2. Check fan motor.
Ye s
Ye s
Ye s
Ye s
Ye s
Ye s
Ye s
No
No
No
No
No
[P03]
Check code CauseCheck code name
Discharge temp TD1 error
Are service
valve of gas and liquid
sides fully opened?
Is outdoor PMV normal?
1. Connector connection
2. Wiring 3. Coil 4. Valve body
5. Outdoor I/F P.C. board
Open service valve fully.
Repair outdoor PMV.
Replace TD1 sensor.
Check 4-way valve.
Correct installation of valve
coil.
Replace SV41 valve.
1. Service valve of outdoor unit closed
2. Outdoor PMV error
3. TD sensor error
4. Refrigerant shortage, clogging of refrigerant piping
5. 4-way valve error
6. SV4 circuit leakage, misinstallation
7. SV5 circuit leakage
8. SV6 circuit clogging
9. Incorrect piping of discharge gas / suction gas pipes
10. Cooling/Heating FS unit error
Are
characteristics of
TD1 sensor resistance
norma
Does
discharged refrigerant
gas leak to suction side
through 4-way
valve?
Connectors: PMV1: CN300, PMV2: CN301, PMV4: CN303
* See "Outdoor unit temperature sensor
characteristics" on "9-9. Sensor Characteristics".
No
Correct wiring
Refrigerant shortage,
clogging, pipe breakage
Are indoor units of a
different refrigerant line
connected?
(Check it using the miswiring check
function of the outdoor unit.)
(Check there is no pipe breakage, and
then recharge the refrigerant.)
ABNORMAL
SV5 circuit
leakage check
Replace defective parts.
ABNORMAL
NORMAL
SV6 circuit
clogging check
Replace defective parts.
ABNORMAL
NORMAL
Check
incorrect main piping of
discharge gas/suction
gas.
Correct piping to normal piping.
No
NORMAL
Is Cooling/Heating
FS unit normal?
Repair Cooling/Heating FS
unit.
SV4 circuit
1. Are SV41, SV42 and SV43
valve coils installed correctly?
2. Is SV41 circuit sealed
correctly (no leakage)?
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