I have the same netaheat 16-22 Mk II and was wondering if I should still hear the Spark generator clicking even after the boiler is running? I've had to change the spark gen about 3 times in the last 5 yrs.
Branden, January 2010
You need to replace the outer casing screwd back in firmly before she fires up !
Dave, November 2009
electronic ignition only lights when boiler calling for heat boiler off , pilot off , boiler starts you will here a clicking that is the sparker lighting the pilot.
jts plumbing, November 2009
Some boilers have manual ignition for the pilot flame
Some boilers have automatic ignition
Some boilers have no pilot
On my boiler, when there's a call for heat, the fan runs - you can hear it - then a pressure switch detects that the fan is running OK and only then will the control board open the pilot-flame gas-valve and strike a spark - bingo!
