Ferroli Optimax - hot water problems

[dleader]

I've got a problem with a Ferroli Optimax 31c. uke:

The heating side is fine but the customer is only getting hot water under some very specific circumstances

1. The heating must be off
2. The cold water inlet valve has to be turned to limit the flow into the boiler.
I initially thought this might be due to a faulty diverter valve motor and replacing this made a small amount of difference.

Does anyone have any ideas - was thinking it must be a flow meter problem but don't understand why the flow has to be very low for the boiler to light

Would appreciate any ideas that you may have.

cheers

David

 

[Unregistered]

Hi can anyone. Help my ferroli is not giving me hot water when I open tap boiler fires up hot water is hot for about a second then runs cold boiler temp is up around 70 but flame drops to low fire what is the problem is it the diverted valve maybe?

 

[ShaunCorbs]

are you gas safe reg if not sorry we cant help and top tip get a gas safe engineer out

 

[Dotty]

Job 38.11