43
Henrad SE FF
- Installation
FAULT FINDING
Does the fan run correctly ?
Is the correct (or higher) burner pressure
indicated during an ignition attempt ?
Go to Fault Finding Chart 2
Has air been purged out of the gas line ?
Is there a spark at the ignition electrodes
during an ignition attempt ?
Go to Fault Finding Chart 3
Does the boiler light ?
Go back to Fault Finding Chart 3
Go to Fault Finding Chart 4
YES
YES
YES
YES
Exit
Go to Fault Finding Chart 1
NO
NO
NO
NO
NO
YES
Purge gas line
MAIN MENU
YES - but only for a few seconds
Note.
The correct sequence of operation during ignition is as follows:-
1. Mains to boiler with all boiler thermostats calling for heat.
2. If the fuse on PCB 37 is OK, LEDs 2, 3 and 4 illuminate and the fan starts.
3. After 8 seconds LED 2 goes OFF, the spark starts and the gas valve opens.
4. If a flame is detected the spark stops, LED 2 stays OFF and the 'Burner on' neon lights.
5. If a flame is not detected the spark stops, the gas valve closes, the fan continues to run and LED 2
comes ON.
78 FAULT FINDING CHART
F
AUL
T FINDING
Clear the blockage.
Remove the fan and inspect the scroll
for water ingress.
YES
BEFORE STARTING THE BOILER.
Is the condensate drain blocked?
Содержание Henrad SE 30 FF
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