ACPro AUHD18ND3F1O - Page 33

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• F1 Malfunction of Evaporator Temperature Sensor
• F2 Malfunction of Condenser Temperature Sensor
Malfunction of
evaporator
temperature
sensor
Check if the evaporator
temperature sensor on
mainboard is inserted on the
needle stand correctly
Disconnect
the temperature sensor and
measure if its resistance is
normal
Correctly insert the
temperature
sensor on the
needle stand
Replace the
temperature
sensor
Replace the
indoor
mainboard
Yes
No
No
Yes
Malfunction of
condenser
temperature
sensor
Check if the condenser
temperature sensor on
mainboard is inserted on the
needle stand correctly
Disconnect
the temperature sensor and
measure if its resistance is
normal
Correctly insert the
temperature sensor
on the needle stand
Replace the
temperature sensor
Replace the
outdoor
mainboard
Yes
No
No
Yes