DeDietrich AWHP MIT-IN iSystem User Manual page 28

5. Troubleshooting
Code Faults
TA-S DISCONNEC SCU
D38
D99 DEF.BAD PCU
L33 FLOW FAIL.
27
Cause Description
of the
fault
The Titan Active System® is on an open circuit
Check that the connection cable between the SCU PCB and the anode is not severed
4
Check that the anode is not broken
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 heat pump, check that the
TAS simulation connector (delivered in package AD212) is fitted to the sensor board.
SCU The SCU software version does not recognise the PCU connected
Contact the professional who takes care of maintenance of the appliance
4
The flow rate is lower than the threshold defined by the MIN.STOP.FLOW. parameter
Contact the professional who takes care of maintenance of the appliance
4
AWHP MIT-IN iSystem
Checking / solution
06/09/2012 - 300027618-001-01