Honeywell SDC manual Radiator systems

SDC / DHC		Operation
Factory setting	1,3	(radiator systems)
	1,1	(floor heating) with mixed heating circuits
Setting range	1 ... 10

4.3Error messages

ATTENTION

Inform the heating technician whenever any fault messages are output.

The control device contains substantial error-notification logic. The error messages appear in continuous alteration with the basic display. Multiple errors that occur at the same time appear one after another in the order in which they occurred. The following types of error message exist:

Sensor error Sensor measured values that do not lie in the measurement messages range are evaluated as an interruption or short-circuit. They

appear depending on the type and allocation with fault code 10 to 20 and index 0 for short-circuit or 1 for interruption.

Heat generator error These error messages evaluate the respective switching status. messages They appear depending on the type and allocation with fault code

30 to 40 and index 0, 1 or 2.

Logical error These error messages evaluate the control result to be expected. messages They appear depending on the type and allocation with fault code

50 to 60 and index 0, 1 or 2.

Bus error messages These error messages refer to address faults such as double issuance or non-recognition of address settings on the data bus. They appear with fault code 70 and index 0 or 1, depending on the type and assignment.

EN2H-0220GE51 R0308 59