43
Minimiser SE
- 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 1, 3 illuminate and the fan starts.
3.
After 8 seconds the spark starts and the gas valve opens.
4.
If a flame is detected the spark stops, and the 'Burner on' neon lights.
5.
If a flame is not detected the spark stops after 9 seconds and the gas valve closes.
(The 'Burner On' neon illuminates momentarily)
6.
The fan stops momentarily, restarts, runs for 8 seconds and the ignition cycle is repeated.
7.
If a flame is not detected after a total of 5 attempts, the sparks stops, the gas valve closes, the fan
stops 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?
Summary of Contents for minimiser SE 30
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