Sinclair ASGE-09AIN WK Service Manual page 91

F3 Malfunction of Outdoor Ambient Temperature Sensor
temperature sensor on mainboard
is inserted on the needle stand
F4 Malfunction of Discharge Temperature Sensor
discharge temperature sensor on
Malfunction of
outdoor ambient
temperature
sensor
Check
if the outdoor ambient
correctly
Yes
Disconnect
the temperature sensor and
measure if its resistance is
normal
Yes
Replace the
outdoor
mainboard
Malfunction of
discharge
temperature
sensor
Check if the
mainboard is inserted on the
needle stand correctly
Yes
Disconnect
the temperature sensor and
measure if its resistance is
normal
Yes
Replace the
outdoor
mainboard
Correctly insert the
No
temperature sensor on
the needle stand
No
Replace the
temperature sensor
Correctly insert the
No
temperature sensor
on the needle stand
Replace the
No
temperature sensor
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