elco Firebird FB 2 K LN - Page 57

TROUBLESHOOTING
57/64
EN
Check
procedure
Take sensor
on hands
Obscure
sensor to
light
Sensor see
external light
Lock out
after 20 s
Lock out
before 20 s
1 Reset
1 Reset
Yes Yes
Yes
Yes
No
Boiler control
supplied with
heat demand
Burner
motor
runs
Lock out
during pre
purge phase
Is there a
false ame
signal
Remove
false ame
causes
No
Replace ame
sensor
Replace
control box
Check ame
sensor
functionality
**
Flame sensor
work well?
Fig. 57
(**) Check ame sensor functionality
Check
procedure
Take sensor
on hands
Obscure
sensor to
light
Sensor see
external light
Lock out
after 20 s
Lock out
before 20 s
1 Reset
1 Reset
Yes Yes
Yes
Yes
No
Boiler control
supplied with
heat demand
Burner
motor
runs
Lock out
during pre
purge phase
Is there a
false ame
signal
Remove
false ame
causes
No
Replace ame
sensor
Replace
control box
Check ame
sensor
functionality
**
Flame sensor
work well?
Fig. 58