boiler reaches temperature but but pump stops after aprox 2 minutes will not come back on as no water circulation through primary flow/return which is up to temp , will reignite if turn off prog then back on , same thing hapens every time 3 way valve working o.k have changed programmer,cylinder stat working correctly is it pc board or limit stat ,as sometimes if left lockout light has to be reset

wernham, July 2007

if left how many times does lockout flash ?
5 times a sec
1 time a sec
1 every 4 secs
or coninuously on

hi-spec plumbing, July 2007