Hello,
I seem to have an problem with my Worcester 240 combi:-
When boiler is switched on it fires up for 5-10 seconds and then the red reset pops up. Both DHW and CH are cold. Ther boiler seems to make a hissing sound just before it cuts out.
Things I have checked:-
1) circulating pump gets very hot but is working.
2) pipe to expansion vessel also gets very hot and there is some pressure in the vessel. (how musch pressure i dont know??)
3) diverter valve looks like it working
4) I've changed the PRV as it was leaking (Not leaking any more).
Please someone help. I'm getting desperate for any ideas?????? May be an air lock in the system ????
I seem to have an problem with my Worcester 240 combi:-
When boiler is switched on it fires up for 5-10 seconds and then the red reset pops up. Both DHW and CH are cold. Ther boiler seems to make a hissing sound just before it cuts out.
Things I have checked:-
1) circulating pump gets very hot but is working.
2) pipe to expansion vessel also gets very hot and there is some pressure in the vessel. (how musch pressure i dont know??)
3) diverter valve looks like it working
4) I've changed the PRV as it was leaking (Not leaking any more).
Please someone help. I'm getting desperate for any ideas?????? May be an air lock in the system ????