what should the resistance across the solanoids of the gas valve of a worcester 25 si boiler . there are 3 of them.

hardie, November 2009

I presume you are checking the resistance to see if theres a fault on the gas valve. You can quite safely say that if there is 1000ohms or so the solenoids are ok, check theres voltage to the valve (do this with a hot tap open) if there is then it may be a fault with the valve internals i.e. stiking diaphram

nev, November 2009