Hass1

[amh gas services]

Hi ,
Sorry to bother you i am struggling with biasi24s SPA heating is ok hot water works when central heating is on when heating is off long time and if i try to turn on hot water hot doesn't work .i hav to turn on heating first especially it happened morning time i changed diaframe still same . Is it any thing like dhw micro switch?



Leeds

 

[amh gas services]

It could be micro switch