biasi 24s Combi

[noxid]

I've got a biasi 24s combi and it works fine through winter, hot water & central heating no problem. Come summer and the hot water doesn't always work - theres no pilot light or anything when the taps turned on. If I switch the boiler off, close the water valves, leave it for 30 seconds or so then switch it all back on the boiler fires up and works perfectly. But then if not used for a couple of hours it wont fire up. Come winter when the central heating is working I never have any problems. Any ideas??

 

[ollski]

diaphragm in diverter valve split / damaged.

 

[ChrisR]

It ain't got one, iirc. Separate flow switch.
Does ANYTHING seeem to haqppen when you turn the water on and it doesn't fire? Any clicking etc? Do fan or pump start?

 

[kevplumb]

it does have one or two chris might even be three got bored looking
deffo one in the diverter valve and one in the h/w flow switch

 

[ollski]

Yep, left hand side, drain water, remove two pipes undo grub screw (screws facing inside boiler), replace and reassemble....job done.

 

[ChrisR]

So it has. I was confuddling it with the Ideal-biasi.

Part number BG1011102, rrp about £10 inc vat.

 

[kevplumb]

ahh havent we all been there at least you admit it mate most wont