100 PB
TROUBLESHOOTING
Temperature sensor malfunction
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?
Y
Y
N
N
Y
N
N
Y
Y
N
N
N
Y
Y
Y
it
unit and start
Energize the
Indoor unit
Indoor unit
display F1/F2
display F4/F5
Reliable
connected?
Replace
Check connecting state of
outdoor temperature sensor
Tesmepnesroar
ture Sensor
Remove error?
Replace parts
electric box
of outdoor
Check connecting
temperature
state of indoor
sensor
Adjust
Remove error?
connecting state
reliable
connected?
Replace
temperature
Remove error?
sensor
Replace main
Adjust
boarudn iotf in door
connecting state
Finish
Remove error?
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