Honeywell SDC heating and district heating controller Service Manual page 247

SDC / DHC
Fault message log
EN2H-0221GE51 R0808
Additional fault processing:
Faults appear in the basic display of the controller. System faults
appear on the information level with the corresponding
information value. Faults may be copied to the fault message log
(see below for description). If configured accordingly, faults
activate a fault message output to the connection of an optical or
acoustic transducer and are forwarded to the corresponding
gateways.
With connection of an automatic stoker, further fault messages
may arrive from it. They are displayed as follows:
Fault type Fault
code
Water S0-1
pressure
Water S0-5
pressure
Water S0-2
pressure
Ventilation S1-0
Maintenance S2-0
Switch-off –
Service 240-1
The control unit features two fault message logs (FAULT
MESSAGE for system faults and FAULT 2 for faults from
automatic stokers), in which max. 20 fault messages can be
saved. The fault messages are displayed with their date, time and
fault type (fault number). The query is carried out in the sequence
of the entered fault messages in the "Fault Message" menu.
Field 1 Field 2 Field 3
Water pressure
Water pressure
Water pressure
Ventilation
Maintenance
Switch-off
Service
Hydraulic Components
HIGH
LOW
MIN
OFF
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