Global Mod Team
Join Date: Nov 2002
Location: Congleton - The centre of
Yep, this is a fairly well known drawback of condensing boilers.
Had it happen to ours on Wednesday, and again on Thursday.
I was pleased with myself for diagnosing and fixing it quickly the first time. The second time was more complicated, and involved a return to idiocy for me.
Boiler not working - tried to defrost pipes, didn't work. Set up electric heater in house just in case this was more long turn, and returned to trying to fix. Our boiler is in the garage, and has quite a long run of pipe before it goes outside the wall - so can't pour water on it, because it'd flood my garage. Trying to defrost 3 metres of pipe with an hairdryer (and no way of telling where the block really was) didn't sound like fun.
Eventually, as a short term fix, I just cut the pipe a short way from the boiler to let it drop into a bucket.
But boiler didn't work still on reset. I spent half an hour fiddling with it trying to decide whether the condensate tank inside it had frozen too before I realised that when I set up the electric heater, I put it right beneath the thermostat. So as far as my heating system was concerned, the house was toasty warm.
The other mistake I made was not spotting that the piping was just push fit - so when I sawed through it meaning I'll need a new pipe, I could have just pulled it out the bottom of the boiler.
"Human beings, who are almost unique in having the ability to learn from the experience of others, are also remarkable for their apparent disinclination to do so." - Douglas Adams
"You know, sometimes the world seems like a pretty mean place."
"That's why animals are so soft and huggy."
- Calvin and Hobbes
To err is human, to moderate ursine.