Allied 4DHV Mini-Split Series - Error Codes and Troubleshooting; Error Codes E4, E5, F0, F1, F2, F3 Diagnosis

508067-01 Issue 2016 Page 67 of 75
Error Codes: E4, E5, F0, F1, F2 and F3
Description: Open circuit or short circuit of temperature sensor diagnosis and solution.
General Note: Error displays if voltage is lower than 0.06V or higher than 4.94V.
NO
YES
NO
YES
Replace indoor or outdoor PCB
Check the connecon between
temperature sensor and PCB.
Is it properly wired?
Is it within acceptable
parameters?
Measure the resistance value
of the sensor.
Ensure proper connecons.
Replace the Sensor.
NOTE: See Table 2 on page 17.