17
Control diagnosis under fault conditions and lockout indicatio
Gas burner control: LMG ...
172 445 12 16-01
Alarm control table
ELECTRICAL EQUIPMENT
Control program when disruption; disruption display
Gas burner control: LME....
During alarm trigger diagnostics, control outputs are to be disconnected from all power.
- The burner is disconnected
- Exception, the «AL» alarm signal at connection block 10
The burner is only to be reconnected after it is reset
- Press the reset button 0.5...3 s.
To switch to interface mode, hold the reset button depressed for more than 3 s. To return
to normal mode, hold the reset button depressed for more than 3 s. If the fi ring unit is
in the alarm mode, it is reset by pressing the reset button 0.5...3 s.
Interface diagnostics
Connecting signal amplifi er
Red fl ashing code on
Possible causes
signal lamp (LED)
Flashing 2 x
No fl ame at End of «TSA»
••
- Defective or obscured fl ame monitor
- Defective or obscured fuel valves
- Poor burner installation
- Defective ignition unit
Flashing 3 x
«LP» defective
•••
- No air monitor signal after «t10»
- «LP» is welded in the open position
Flashing 4 x
Prohibited fl ame signal during start up
••••
Flashing 5 x
Time out «LP»
•••••
- «LP» is welded in the closed position
Flashing 6 x
Free
••••••
Flashing 7 x
Too many loss of fl ame during operation
•••••••
- Poor burner installation
- Defective or obscured fuel valves
- Defective or obscured fl ame monitor
Flashing 8 x
Free
••••••••
Flashing 9 x
Free
•••••••••
Flashing 10 x
Connection fault or internal fault,
••••••••••
outgoing contacts or other fault
Flashing 14 x
CPI contact not closed
••••••••••
••••
A1 = LME
GP
R/W
L
N
br
bl
rt
sw
sw
rt
Q1 = AGQ 3...
QRA
1
11
12
2
5(5)
Summary of Contents for BG 550 LN
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