Hi htg engineer
Yes, main burner is off when water runs cold, I can turn on tap and watch as burner comes on, hot water, then burner cuts off, cold water!
we live in a soft water area, no problems with limescale in kettle etc
Help!
Saunier Duval 23e, 12 yr old.
Direct hot water runs cold after 10 sec`s then repeats hot/cold
Changed thermister, no change in problem!
any advise?
