I had water drip down to the central heating valve power head it dried out, but fried the micro switch (signal to the boiler), valve still works, Its just now need to turn the hotwiter boiler on constantly juts to get heat.
The one I missed was going to cost me £11-£15 the shops wanted £45-£65
HONEYWELL 40003916-001 REPLACEMENT POWERHEAD
http://www.ebay.co.uk/itm/160690015579?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1423.l2649I used 13 3amp fuses before I realised it wasn't the boiler playing up

I'll put pictures up I might need to ask about re wiring the thermostat to central heating, its not working British gas came replaced it about 5 years ago and its never worked. I don't think its hooked up, but the junction box is a nightmare something I've been putting off Alex and its winter now!
