heating is working fine but only getting hot water when greatly restricting flow AT the tap.

we found out gas valve appears not to be responding correctly??

& now we are told problem could be controll board!!

do we need to buy both components or can we pin the problem down to one part & how would we go about this??

Glow-worm compact 100e

gc no. 47-047-08a

ORFANSFROMDETROIT, March 2011