Baxi 105e working OK but slow running scalding water

[Gaz3395]

Hi all hope you can help me,
I've got a Baxi 105e which has been running great until lately.
The hot water started running really slow and the pressure started to constantly drop. With investigation I found it needed a new expantion vessel.
I fitted an external tank successfully but still have the problem of slow running hot water which is seriously red hot and takes ages to fill a bath.

central heating seems OK and switches to hot water OK when heating is on and a tap is run.
one more point don't know if its related but we don't get instant hot water any more.

any help would be greatly appreciated.
thanks
Gaz

 

[diamondgas]

Gaz it could be as simple as your main stop valve being virtually closed or the boiler isolation valve the same. Whatever it is it deffo sounds like a restricted flow. Do you live in a hard water area, had any work done on the mains in the area? Are your cold taps functioning normally?

Answering these may narrow down the possible cause for you

 

[Gaz3395]

hi Steve thanks for the reply, yeah my cold water is really strong and the pressure is stable. no we don't live in a hard water sort of area. just noticed, I'm in Newcastle same as you.
the main stop valve is open OK the boiler seemed to be OK, the hot water was running pretty fast. up until about a month or so ago

 

[diamondgas]

If the water is ok on everything but the hot then there's a chance the filter may have been blocked with debris of some sort ...