New Bosch Combi Gas Blr; 4000W ZWA 24-2

[Rolly]

:disappointed: Have installed this unit in my home, HW activates OK on demand when tap opened, CH will not activate on demand, the only way to get the heating to activate is to switch HW on 1st for 2 seconds then off again, then the CH will activate & remain on/off all day, have pondered on this fault for 2 weeks now. Could it be the 15mm gas supply pipework to the blr;[2mtrs long] this however does not appear to affect the HW upon demand. Boiler is only a month old,.

 

[Barry98]

Get your registered installer back to sort or ring Bosch as it's under there warranty

 

[Rolly]

The problem here in Hungary is getting someone to understand the problem, not like back home, as I was Corgi registered myself, understand what you are saying BOD, being ex-pat retired out here, you need to be a Jack of all, otherwise you get ripped off,.