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The Honeywell cm921 or cm927 seem to be favoured round here. I found a guy on Ebay selling them around 30-40 quid each. Although the RRP is probably closer to £100 I don't think it is a major job to replace, if you have reasonable DIY skills. But for all the tea in China, do not under any...

Thanks for all the advice guys, especially Gaspt. Last few days, heating is now getting harder and harder to re-set. The only way I can get it to fire now is completely switch off all power to the boiler/receiver, leave it half hour and then switch on. It will then fire, but only once...

Got back from work, total failure of the heating again! One hour in, still no heat. Definitely getting harder to re-set now.

Thanks, I was thinking I was going mad. Last night, I switched everything non essential electrical off. I think the only thing left running was the fridge! I also had another thought, as each night passed with no heat I had been gradually increasing the temperature by half a degree or so...

I think I need to remove a few variables first. At the moment, it is impossible for me to establish whether there is a fault between the thermostat and receiver, or electrical interference blocking the signal, or whether the signal is being received but the boiler isn't acting on the...

Thanks for that, Location and interference seem to be the most logical cause, so it seems the boiler is ok, and the problem lies with the thermostat/receiver somehow. Someone else has also mentioned an interference issue, we have a wireless Yale alarm and this is the only thing that is...

My first thought were batteries, as surprisingly enough, I was running on the original batteries going back to installation, although there was no low battery warning light. However, I replaced these with some pretty decent re-chargeable ones, and at fully charge, they showed 'low battery'...

****I have changed the thread name to assist future searches by people suffering similar problems.****** We had a new central heating system and Worcester Combi boiler fitted by BG in 2009. It runs on a remote thermostat with a receiver in the cupboard where the boiler is located...