DE DIETRICH TWINEO EGC 25 - Manual (Page 25)

Code Description Checking / solution
Su:31 The TAS is in open circuit The Titan Active System® is on an open circuit
4 Contact the professional who takes care of maintenance of the
appliance
Remarks:
Domestic hot water production is stopped but may nevertheless be
restarted for 72 hours after the boiler is switched off.
The tank is no longer protected.
If a tank without Titan Active System® is connected to the boiler, check that
the TAS simulation connector is fitted to the SCU-s191 PCB.
Su:32 The TAS is short circuited The Titan Active System® is short-circuited
4
Contact the professional who takes care of maintenance of the
appliance
Remarks:
Domestic hot water production is stopped but may nevertheless be
restarted for 72 hours after the boiler is switched off.
The tank is no longer protected.
If a tank without Titan Active System® is connected to the boiler, check that
the TAS simulation connector is fitted to the SCU-s191 PCB.
Su:33 The header sensor in the solar control
system is defective
Bad connection
Sensor fault
4 Contact the professional who takes care of maintenance of the
appliance
Su:34 The sensor in the solar tank is defective Bad connection
Sensor fault
4
Contact the professional who takes care of maintenance of the
appliance
6.2 Faults (type code Exx)
In the event of an operating fault, the control panel flashes and
displays a code.
1. Make a note of the code displayed.
The code is important for the correct and rapid diagnosis of the
type of failure and for any technical assistance that may be
needed.
2. Press the t key. If the code is displayed again, switch off the boiler
and then switch it back on.
Code Cause of
the fault Description Checking / solution
e00 PCU PSU PCB not connected Bad connection
PSU PCB faulty
4
Contact the professional who takes care of maintenance of the
appliance
e01 PCU The safety parameters are
incorrect
Bad connection
PSU PCB faulty
4 Contact the professional who takes care of maintenance of the
appliance
e02 PCU The boiler flow sensor has short-
circuited
Bad connection
Sensor fault
4
Contact the professional who takes care of maintenance of the
appliance
EGC 25 6. Troubleshooting
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