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Thanks all for the feedback. Mursal-all the contacts are used so no spare capacity and the coil checks out OK. What's the general opinion on this type of manual...

http://www.ebay.co.uk/itm/KEDU-KOA8-NVR-Switch-8-amp-12-amp-with-Emergency-Stop-and-JD3-Relay-IP54-/321014232566?pt=UK_BOI_Materials_Supplies_Electrical_ET&hash=item4abdf075f6 This e-bay seller has a stop/start station very similar to the one I need but it is 400v.The fourth picture along shows...

Hi, I have an Einhell log saw which has developed a starting problem which I put down to the stop/start push button station.This consists of stop and start buttons acting thru a solenoid switch which has three pairs of N.O. terminals and a pair of terminals to supply the solenoid.Despite...

namsag, do you by any chance have a part no. for the solenoid ? My local plumbers' merchant sounds about 16 on the phone and seems to have his mind on other things. The part no. of the gas valve is V4600A1021 1.

Again, thanks to all for further input. namsag- it is the one with grey pushbutton, and searching the web i've found it for £80 ish. algas- I wish I could get just the solenoid but unlikely. Can it be removed for examination without causing a gas leak ? My home is pretty well insulated...

Would you care to expand on that ?

Thanks to all for the replies.The coil is open circuit so my dilemma now is replace valve or replace boiler. According to the rating plate on this boiler an input of 110,000btu gives some 80,000btu output. My maths make that 73% efficient. With modern condensing boilers offering say 93% is it...

Apart from a replacement circulating pump and a thermocouple many moons ago this boiler has performed exceptionally for the past 30 years, until last night.After the heating failed to come on this morning my investigations lead me to suspect that the gas valve has failed. I have 240v at the +ve...