Error code
Description
Temperature of heat exchanger too low:
Bad connection: check the wiring
Sensor not connected or incorrectly connected:
Check that the sensors are operating correctly
Check that the sensor has been fitted properly
Faulty sensor: replace the sensor if necessary
No circulation:
Vent the air from the CH system
Check the circulation (direction, pump, valves)
Check the water pressure
Check the cleanliness of the heat exchanger
If present: check the boiler type parameter setting
Temperature of heat exchanger too high:
Bad connection: check the wiring
Sensor not connected or incorrectly connected:
Check that the sensors are operating correctly
Check that the sensor has been fitted properly
Faulty sensor: replace the sensor if necessary
No circulation:
Vent the air from the CH system
Check the circulation (direction, pump, valves)
Check the water pressure
Check the cleanliness of the heat exchanger
If present: check the boiler type parameter setting
Return temperature sensor short-circuited:
Bad connection: check the wiring
Sensor not connected or incorrectly connected:
Check that the sensors are operating correctly
Check that the sensor has been fitted properly
Faulty sensor: replace the sensor if necessary
Open circuit in return temperature sensor:
Bad connection: check the wiring
Sensor not connected or incorrectly connected:
Check that the sensors are operating correctly
Check that the sensor has been fitted properly
Faulty sensor: replace the sensor if necessary
Return temperature too low:
Bad connection: check the wiring
Faulty sensor: replace the sensor if necessary
Sensor not connected or incorrectly connected:
Check that the sensors are operating correctly
Check that the sensor has been fitted properly
No circulation:
Vent the air from the CH system
Check the circulation (direction, pump, valves)
Check the water pressure
Check the cleanliness of the heat exchanger
If present: check the boiler type parameter setting
11 Troubleshooting
72
123157 - v.12 - 07022018
