no hot water with worcester 24i

[drew13]

hi all i have had a few problems with my worcester 24i combi boiler the hot water would not work down stairs replaced a few bits of pipe because of hard water blocking the pipes seamed to work after a few times but now we only get hot water if we turn the heating on. now replaced all the pipe work upto the boiler and fitted a combi mate can anyone advise me on what could be the problem got a man from bg coming out to service it has not been done for a couple of years (new house) just want to see if i can fix it before he comes of have a rough idea of what im talking about
cheers
andy

 

[gas4you]

Dont know worcesters very well but could be the flow switch.

Isthere indication on the front panel that the boiler recognises the hot taps are on?

 

[Rob]

Very rarely does scale block pipe work!

Are you sure its not a CDi? In which case it sounds like the diaphragm

If it is a 24i and the htg works then the flow switch would be the obvious fault

 

[drew13]

hi yes its definatly a 24i i can unsrew the flow swith from the pipe do you know if it has to be put on in ant specific way or is it just screw on and plug in ?
cheers
andy

 

[Agile]

If this is the four pipe HE then they can get scaled up. I once saw one with no flow at all.

The black DHW flow switch has to be fitted the correct way round!

Tony

 

[drew13]

yes i think it might be the HE tony we have very little flow now and cannot run two hot taps taps together.one will have water one will not the flows so poor. very strangely though if i give the cold tap a quick blast with the hot tap running it fires up the boiler. is the HE easy to clean or is it a profesonal job
cheers
andy