problem with sime friendly format 80e?

boiler runs for about 15 to 20 mins o.k after it stops for a rest the boiler restarts for about 5seconds then swithces off again then re lights again for 5 seconds this will keep happenning on central heating and hot water i have to switch boiler off for about 45 minutes and then restart.
brendon, December 2004


done
same problem. same answer, ignition box. £85

dace-evo, February 2005
had to replace the ignition box (blue box) this sorted out the problem cost appx £85.00.

john, January 2005
I had similar problems, turned out to be dry joints on the control board inside the little blue box!
Re-soldered the whole lot and fault cured!!

Geraint Evans, January 2005
link Click here to see other fixes for Sime.