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Troubleshooting
SiUS041501E
85
Service Diagnosis
4.19 Thermistor or Related Abnormality (Outdoor Unit)
Error Code
H9
,
J3
,
J6
,
P4
Method of Error
Detection
This fault is identified based on the thermistor input voltage to the microcomputer.
A thermistor fault is identified based on the temperature sensed by each thermistor.
Error Decision
Conditions
The voltage between the both ends of the thermistor is above 4.96 V or below 0.04 V with the
power on.
J3
error is judged if the discharge pipe temperature is lower than the heat exchanger
temperature.
Supposed
Causes
Disconnection of the connector for the thermistor
Thermistor corresponding to the error code is defective.
Defective heat exchanger thermistor in the case of
J3
error (outdoor heat exchanger thermistor
in cooling operation, or indoor heat exchanger thermistor in heating operation)
Defective outdoor unit PCB
Troubleshooting
In case of
P4
Replace the outdoor unit PCB (main PCB).
P4
: Radiation fin thermistor
Caution
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
Содержание FTKN09NMVJU
Страница 12: ...SiUS041501E 1 List of Functions Part 1 List of Functions 1 Functions 2...
Страница 17: ...SiUS041501E Specifications 6 Part 2 Specifications 1 Specifications 7 1 1 Cooling Only 7 1 2 Heat Pump 11...
Страница 59: ...SiUS041501E Remote Controller 48 Part 5 Remote Controller 1 Cooling Only 49 2 Heat Pump 51...
Страница 65: ...SiUS041501E Service Diagnosis 54 5 13 Power Module Check 100...
Страница 132: ...Revision History Month Year Version Revised contents 03 2015 SiUS041501E First edition...