Worcester boiler, hot water only when heating on ?

[dom2466]

i only get hot water when i turn heating on ???
what is the problem ?

 

[Morris40]

most likely faulty diverter valve in boiler,

 

[45yearsagasman]

What model Worcester?

 

[nickso]

bound to be a cdi.

 

[bengasman]

Bit more info would not go amiss.

 

[dom2466]

Nickso your right, its a Worcester24cdi. going to the house tomorrow so a heads up would be great thanks.

am thinking divertor valve too. never come across this problem before

 

[nickso]

do i win £5?

probably just needs a diaphragm. i say probably in the same context one would say the titanic just needs a lick of paint.

 

[dom2466]

would they be getting hot water only if the heating is on if the diaphragm is split or needs remewed ?
ssupposse it makes sense, the hot water going through the diaphragm when the heating mode is on.

 

[nickso]

would they be getting hot water only if the heating is on if the diaphragm is split or needs remewed ?
ssupposse it makes sense, the hot water going through the diaphragm when the heating mode is on.

if the diaphragm is stretched it will only open halfway and not hit the endswitch. if the heating is on they get hot water, if it's not they don't. the diverter could be sticking and providing the same problem.

hot water doesn't go through the diaphragm, the cold mains only passes through it to provide a method of seeing demand.