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Hydraulic Components SDC / DHC
248 EN2H-0221GE51 R0808
The last (most recent) fault message is in first position; the
previous fault messages are shifted down by a position with each
new fault message. The fifth fault message is deleted when a new
fault message appears.
Operating
information
Key/Menu Parameter
Display of logical
fault messages
SYSTEM 13
Fault memory
inquiry
FAULT MESSAGE ERR-1 . ERR-5
In the case of condensing systems with automatic stokers, the
outside sensor input can be used to switch off the heating system.
A sensor short-circuit at the outside sensor suppresses a fault
message regarding this and switches off the system. The
message "Heating system off" appears instead of the fault
message in this case.
If a heat generator defect occurs (fault message 30-1 or 31-3) and
system frost protection is active at the same time, boiler start-up
protection is switched off and thus the heating circuit pumps are
started to minimise the danger of system freezing.
7.4.1 Basic display/fault stack fault messages
With connection of an automatic stoker, further fault messages
may arrive from it. They are displayed as follows.
Fault type Fault
code
Field 1 Field 2 Field 3
Water
pressure
S0-1 Water pressure HIGH
Water
pressure
S0-5 Water pressure LOW
Water
pressure
S0-2 Water pressure MIN
Ventilation S1-0 Ventilation
Maintenance S2-0 Maintenance
Switch-off – Switch-off OFF
Service 240-1 Service
NOTE