innovair PIN413C2V31 Service Manual page 43

10.4.5 Open circuit or short circuit of temperature sensor diagnosis and solution(E5)
Error Code
Malfunction decision
conditions
Supposed causes
Trouble shooting:
Check the connections
between temperature
sensor and main PCB.
Are the connections
good?
Yes
Check the resistance value
of the sensor via
table1(p64)and table
2(p65), is it normal?
No
Replace the sensor and
check if the problem happen
again?
E5
If the sampling voltage is lower than 0.06V or higher than 4.94V,
the LED will display the failure.
Wiring mistake
●
Sensor faulty
●
PCB faulty
●
No Correct the connections.
Yes
Replace indoor or
outdoor main PCB.
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