4 Troubleshooting (Quick Diagnosis)
NOTE:
In
the event of a malfunction, fuses
and
electrical con-
nections should always
be
checked for security and
proper condition prior
to
proceeding with
any
trouble-
shooting activity.
Fault condition
Alter
switching on -
no
function
Only alter repeatedly switching
on
- combustion
No
glow plug voltage
Insufficient glow plug voltage
Drive (motor) starts immediately •
Drive (motor) fails to start
Combustion - not established
Combustion - cuts out
Combustion - white smoke
Combustion • black
smoke
Heater overheats
Drive (with motor
in
after-running phase) fails
10
shut
down
Cycling of metering pump - not audible
Cycling
of
metering pump - irregular
Fault lock-out - alter
approx.
240 seconds
Fault
lock-out - after approx.
30
seconds
Motor stops
in
part-load mode
Troubleshooting (Quick Diagnosis) 4
Check and repair
or
replace, if required
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• Possible interruption glow plug/pencil-type glow plug (applies only to SG
1561
GT and 1561 (order no.
241
89A))
Defective flame detector (applies only
to
SG
1561
GS)
9
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