DE DIETRICH TWINEO EGC 25 - Manual (Page 26)

Code Cause of
the fault Description Checking / solution
e03 PCU The boiler flow sensor is on an
open circuit
Bad connection
Sensor fault
4 Contact the professional who takes care of maintenance of the
appliance
e04 PCU Boiler temp too low Bad connection
Sensor fault
4 Contact the professional who takes care of maintenance of the
appliance
No water circulation
4 Vent the air in the heating system
4 Check the circulation (direction, pump, valves)
4
Check the water pressure
e05 PCU Boiler temperature too high Bad connection
Sensor fault
4
Contact the professional who takes care of maintenance of the
appliance
No water circulation
4
Vent the air in the heating system
4 Check the circulation (direction, pump, valves)
4 Check the water pressure
e06 PCU The return temperature sensor has
short-circuited
Bad connection
Sensor fault
4
Contact the professional who takes care of maintenance of the
appliance
e07 PCU The return temperature sensor is
on an open circuit
Bad connection
Sensor fault
4
Contact the professional who takes care of maintenance of the
appliance
e08 PCU Return temperature too low Bad connection
Sensor fault
4 Contact the professional who takes care of maintenance of the
appliance
No water circulation
4 Vent the air in the heating system
4
Check the circulation (direction, pump, valves)
4
Check the water pressure
e09 PCU Return temperature too high Bad connection
Sensor fault
4 Contact the professional who takes care of maintenance of the
appliance
No water circulation
4 Vent the air in the heating system
4
Check the circulation (direction, pump, valves)
4
Check the water pressure
e10 PCU Difference between the flow and
return temperatures insufficient
Bad connection
Sensor fault
4 Contact the professional who takes care of maintenance of the
appliance
No water circulation
4 Vent the air in the heating system
4 Check the circulation (direction, pump, valves)
4
Check the water pressure
6. Troubleshooting EGC 25
25 03/12/2013 - 300026082-001-02