8-4-3. Temperature sensor malfunction
< Main Detection Points >
• Is outdoor ambient temperature within the normal range ?
• Is indoor and outdoor fan running normally ?
• Is the radiating environment inside and outside the unit good enough ?
< Malfunction Diagnosis Process >
Energize the unit and
start it.
Finish
Replace temperature
sensor ?
Adjust connecting state.
Replace temperature
sensor.
Replace main board of
indoor unit.
Adjust connecting state.
Check connecting state
of outdoor
temperature sensor.
Indoor unit display
F1 / F2 ?
Yes
Yes Yes
Yes
Yes
No
No
Yes
Yes
No No
No
No
Yes
No
Check connecting
state of indoor
temperature sensor.
Indoor unit display
F4 / F5 ?
Connection reliable ? Remove error ?
Replace parts of outdoor
electric box.
Remove error ?
Connection reliable ?
Remove error ?Remove error ?
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