36
DOMITOP HF 24 - 30 E
FERELLA GOLD HF 24 - 30 MEL
Versione - 09.2002
Flow Diagram 5
Check the Modulation of the Hot Water and Heating
YES
YES
Is LED1 on?
Is there an ignition spark?
Does the burner ignite?
Is LED2 come on
after 10 seconds?
NO
Proceed with
diagram 4
Reset lockout
YES
Does the burner ignite now?
Is there the flame before
the shutdown?
NO
NO
Check and if necessary change
the safety thermostat
Check electrodes
and leads for damage
and correct connection
Check and if necessary change
the ignition card
Using P4, adjust the
burner ignition pressure
Check and if necessary
clean the burner
Check and if necessary
clean the nozzles
Check and if necessary
clean the detection electrode
Check that the ignition electrode
is in the right position
Check the connections
Check and vent the
gas supply
Check and if necessary
change the gas valve
NO
YES
Check and if necessary
change the ignition card
NO
LED2 (shutdown) comes
on without the
boiler lighting
YES
NO
YES
Is there flame modulation
at the burner?
The boiler
works normally
Check and if necessary
change the heating sensor
The boiler works in
heating mode
YES
NO
Flow Diagram 4
Checking ignition
Supplied by HeatingSpares247.com
