boiler - no hot water help

[smudger525]

Hello i need advice with a worcester bosch 240 rsf boiler. Tonight the hot water started cutting out after a minute or 2 of hot water supply. Does anyone have any ideas?.

Sorry forgot to add that you almost have to turn the tap onto full for the boiler to kick in.

 

[spacethegas]

on the left hand side facing you is the diverter valve (round brass thing).
when you turn the tap on the spindle in the middle pokes out & stays out operating a microswitch.
if this does not happen the diaphragm requires replacing.

 

[smudger525]

Ok i've just watched it. It does popout and touch the switch but if you don't switch the tap on enough it doesn't touch properly and if you turn it too high it moves back away from the switch. The upstairs taps make it move back away from the switch after a min or two

 

[spacethegas]

new diaphragm

 

[smudger525]

Thankyou for your help!

is this easy enough todo yourself or does it require an expert also wheres the best place to get them?.

 

[tonybhoy]

£180 for a WB fixed price repair. Some of these WB divertors are pigs to do. Don;t know about this one though

 

[smudger525]

That much!!!. It had to happen at a worse time as im skint this month!!. Are you sure its not possible to do it DIY?.

 

[spacethegas]

local boiler parts supplier or net.
ask for GIANNONI DIAPHRAGM ASSY.
easy to do on your boiler...........but the sliding joint on the right of valve will more than likely leak.
you will need a replacement "o"ring, 3/4" & 1/2" fibre washers.

 

[spacethegas]

if parts cost more than £15 you are being robbed.

 

[smudger525]

I take it this is the one?

http://cgi.ebay.co.uk/Diverter-Valv...84|39:1|66:2|65:12&_trksid=p3286.c0.m14.l1318

 

[twgas]

quite easy on this boiler,(but its my job ) isolate - electric and water - remove microswitch, one union nut and about 8 screws around housing, take out worn or damaged parts and replace, silicon grease on all the moving bits, reassemble.

 

[spacethegas]

that looks like the thingme.

 

[smudger525]

thankyou all for you help!!! You have saved me a great deal of money!!

 

[spacethegas]

thats alright buy me a few pints & we will say no more about it.

by the way be careful with the circlip, watch it doesn't ping away never to be seen again.

 

[smudger525]

I take it that bit is inside the divertor.