TROUBLESHOOTING
64
Procedure
E5 E6 E9 EA
↓
Temperature sensor connection on main PCB is
loose (1)
YES →
Ensure the sensor is connected properly
NO
↓
Temperature sensor has short-circuited or failed (2)
YES
→
Replace the sensor
NO
↓
Replace the unit’s main PCB
1 Air side exchanger refrigerant outlet temperature sensor and outdoor ambient temperature sensor
connections are port CN9 on the unit’s main PCB. Discharge pipe temperature sensor connection is port
CN8 on the single-phase unit’s main PCB and CN4 on the three-phase unit’s main PCB.
2 Measure sensor resistance. If the resistance is too low, the sensor has short-circuited. If the resistance is not
consistent with the sensor’s resistance characteristics table, the sensor has failed. Refer to the “Temperature
sensor resistance characteristics” table.
To Next Page
Loading...
Need help?
General