Don't think it's the sludge blocking because although it's unpredictable in some ways there is a pattern e.g. the way the pilot comes on and off all the time. I just checked the thermostat and turned it up to 24 from 21 - shouldn't the pilot ignite again and stay on until the next heat level...
Thanks for the tips! I have felt the pipes and the hots ones do go hot now and then but not for long, I think it must be they turn hot for a few minutes when the pilot fires up and then they cool down very fast.
Should there be a dial on the pump where I can turn it up? There doesn't...
Hi
I'm new to this forum, have just signed up but sounds like I'm in good company already... we have had no hot water all day and the CH is not coming through to our rads.
Last November we power flushed the house and got a good result, warm rads all round. Then after a couple of months the...