5.6
E4/E5/F1/F2/F3 (Open circuit or short circuit of temperature sensor diagnosis and
solution)
Description
: 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
Troubleshooting and repair:
NO
YES
NO
YES
Page 78
Replace indoor or outdoor PCB
Check the connection between
temperature sensor and PCB.
Is it properly wired?
Is it within acceptable
parameters?
of the sensor.
Ensure proper connections.
Replace the Sensor.
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