104
8 System Operation
Fault
Code
No.
Restart according to Description
TRD EN676
745 0 0 Programme check time exceeded.
Ü
746 0 0 Solenoid value switch-off faulty
Ü
747 0 0 Leak check: ventilating into boiler not allowed
Ü
750 0 0 Shut-down on faults via bus.
Ü
751 >88 3 No data transfer via the bus (time-out).
Ü
759 0 0 The "Setting" operating mode exceeded the 24-hour time limit.
760 0 0 Change of curve selection during setting not allowed
H/Ü
761 0 0 Change of curve lasts too long
The curve set change takes too long/could not be performed.
e.g.: The fuel safety chain is missing
763 0 0 different curve selection between the processors
764 1 1 CO-Controller, internal fault no. -
765 0 0 Parameter setting error: The channel for solo-fuel is not to determine.
Check the parametrisation of the channel configuration.
766 0 0 The limited firing rate (maximum firing rate without additional-fuel) does not
exists in the priority curves
Check the programming of the priority curves (assignment of the fuel channels and
their programming).
767 0 0 One parameter of the interpolation type for non-fuels is invalid
Check parameters 390 through 394
768 0 0 The curve set variable for the assigned air channel (1 = priority, 2 = additional
curve) is invalid.
Compare solo curves and priority curves as they possibly have different fir-
ing rate points!
769 0 0 Ignition while mixed fuel operation or burner-start with solo fuel-A
Ignition is permitted only in a solo curve set.
FMS:
Ignition is permitted only with the oil or gas solo curve set, but not with solo fuel A.
770 0 0 Fill-Time for fuel-A too long
791 >88 3 Bus master is in a stop.
Ü
792 >88 3 Bus data length incorrectly configured.
Ü
793 >88 3 Bus master is decoupled.
Ü
800 0 0 Error in parameters, for parameter no.:
H/Ü
888 0 0 Fault block activated !
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