DeDietrich AFC 30 User Manual page 41

AFC 18 - AFC 24 - AFC 30
Code Faults
D27 PCU COM.FAIL
D37 TA-S SHORT-CIR
D38 TA-S DISCONNEC
D99 DEF.BAD PCU
15/07/2015 - 300026440-05
Cause Description
of the
fault
SCU Communication failure between the SCU and PCU PCBs
Contact the professional who takes care of maintenance of the appliance
4
SCU The Titan Active System® is short-circuited
Contact the professional who takes care of maintenance of the appliance
4
Remarks:
Domestic hot water production has stopped but can nonetheless be restarted using
key r.
The tank is no longer protected.
If a tank without Titan Active System® is connected to the boiler,check that the
TAS simulation connector (delivered with package AD212) is fitted to the sensor
card.
SCU The Titan Active System® is on an open circuit
Contact the professional who takes care of maintenance of the appliance
4
Remarks:
Domestic hot water production has stopped but can nonetheless be restarted using
key r.
The tank is no longer protected.
If a tank without Titan Active System® is connected to the boiler,check that the
TAS simulation connector (delivered with package AD212) is fitted to the sensor
card.
SCU The SCU software version does not recognise the PCU connected
Contact the professional who takes care of maintenance of the appliance
4
Checking / solution
7. Troubleshooting
40