Hi all - my first post on here.
We've just developed a bit of a major problem with out heating system.
It's a conventional system consisting of boiler, rads, hot water tank and header tank in the loft.
We've always had a minor issue with the 3-way valve not functioning properly - you have to have the HW on to get CH - but this has never been a problem (ironically, I bought a new 3 -way valve a few days ago ready to fit this weekend)
However it all went a bit wrong today. When we woke up, everything was fine, radiators all hot and no problems.
But when we got home, the house was freezing, no radiators were on. Basically the boiler isn't firing up.
The controls on the programmer are set correctly, and switching both HW and CH to On makes no difference.
Turned HW thermostat right up, and CH but no difference.
I did find that after turning the whole system off for a while, then the boiler would fire up when you first turn it back on, but only for about 4 minutes - during which time all radiators remained stone cold, so I'm thinking the boiler is ok and it's likely to be a problem elsewhere in the system? - maybe the valve completely seizing up, or the pump, which does seem to be running.
Any help/advice would be greatly appreciated.......
We've just developed a bit of a major problem with out heating system.
It's a conventional system consisting of boiler, rads, hot water tank and header tank in the loft.
We've always had a minor issue with the 3-way valve not functioning properly - you have to have the HW on to get CH - but this has never been a problem (ironically, I bought a new 3 -way valve a few days ago ready to fit this weekend)
However it all went a bit wrong today. When we woke up, everything was fine, radiators all hot and no problems.
But when we got home, the house was freezing, no radiators were on. Basically the boiler isn't firing up.
The controls on the programmer are set correctly, and switching both HW and CH to On makes no difference.
Turned HW thermostat right up, and CH but no difference.
I did find that after turning the whole system off for a while, then the boiler would fire up when you first turn it back on, but only for about 4 minutes - during which time all radiators remained stone cold, so I'm thinking the boiler is ok and it's likely to be a problem elsewhere in the system? - maybe the valve completely seizing up, or the pump, which does seem to be running.
Any help/advice would be greatly appreciated.......