FMS Fault Correction
General Faults (A)
Aids
A22
Fault
901
Although terminal 9 and 10 both have +24V they are nevertheless
monitored by internal tests at different times. They must not be connected
to one another.
Use terminal 9 only for supplying digital input signals.
Use terminal 10 only for the supplying the relay modules.
Do not connect any other consumers unless expressly permitted.
_____________________________________________________________________________________________________
A 23
Fault
116
The monitoring processor and the main processor may not have precisely the
400
same load rating, so that in one an old point has been overwritten, whilst in the
other a new one has been added. This is possible particularly where the load
ratings of the individual points lie close together.
Selector switch (2) to "Clear memory"
Press Acceptance (3)
Re-enter curve
_____________________________________________________________________________________________________
A24
Fault
120
Different operating modes on main and monitoring processors.
The digital input signals are detected at slightly different times on main and
monitoring processor.
A signal change occurs only for such a brief instant that the main processor
detects it but the monitoring processor does not.
Check signal sequence
_____________________________________________________________________________________________________
A25
Fault
921
Relay modul 660 R 0016 old version:
925
see display text
Relay module 660 R 0016 since version V4.3:
One of the outputs, which are tested during burner start (teminal 82 - 84) has
recognised a fault.
To diagnose the faults H 921 and H 925, you may change to the diagnosis mode.
The changing will be done with plugging or unplugging the jumper B on the relay
module (see chapter "Diagnosis Mode" on p. 120).
94
