Malfunction Messages - Honeywell SDC Operating Instructions Manual

SDC / DHC 43
Factory setting
Setting range

4.3 Malfunction Messages

EN2H-0220 GE51 R1005
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1.10 Slightly progressive heating characteristic
for floor or other panel heating systems.
1.30 Progressive standard characteristic for all
radiator-heating systems with m-values
comprised between 1.25 and 1.35.
2.00 Progressive heating characteristic curves
for convector and baseboard heating
systems.
>3.00 Very progressive heating characteristic
curves for general ventilator application
with high start temperatures.
1.30 (Radiator systems)
1.00...10.00
The controller has an extensive built-in malfunction
reporting logic, which displays with top priority the type of
malfunction.
The malfunction messages alternate with the basic
display as they appear. Several malfunctions occurring at
the same time will appear one after the other in the
temporal order in which they occur.
There are four different malfunction message categories:
Sensor malfunction messages
Sensor values beyond the measuring range are
considered as interruptions or short circuits. They appear
with error codes 10 to 20 and index 0 for short circuits or
1 for interruptions.
Heat generator malfunction messages
These malfunction messages analyze the current
switching status. They appear with error codes 30 to 40
and index 0, 1 or 2.
Logical malfunction messages
These malfunction messages refer to the expected
controller function. They appear with error codes 50 to 60
and index 0, 1 or 2.
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Operation