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Check the connec
�
on between
temperature sensor and PCB.
Is it properly wired?
Measure the resistance value
of the sensor.
Is it within acceptable
parameters?
Replace the Sensor.
5.6
E4/E5/F2 (Open circuit or short circuit of temperature sensor diagnosis and solu
�
on)
(F2 is only for 22k models)
Descrip
�
on
: If the sampling voltage is lower than 0.06V or higher than 4.94V, the LED will display the failure.
Recommended parts to prepare:
• Wiring mistake
• Faulty sensor
• Faulty PCB
Troubleshoo
�
ng and repair:
NO
YES
NO
YES
Replace indoor or outdoor PCB
Ensure proper connec
�
ons.
Tr
o
ub
le
s
h
oo
ti
ng
