Boiler struggling to keep hot water flowing

[slacky]

Hey guys

Few months ago I had a problem with my glow worm betacom 30c when running the hot tap it’ll get lukewarm then cold and would keep doing this till the boiler timed out

British Gas sorted it after the 4th visit. Now few months later (not sure if the cold weather has made it worse) the water doesn’t stay hot. It goes from hot to lukewarm then back to hot. It’s like the boiler can’t keep a constant flow of hot water.

Any suggestions what it could be? Tempted to get British Gas back out but will they say it’s a fault even though there’s still hot water ?

Thanks guys

 

[townfanjon]

Couple of things spring to mind , but if you are on a BG contract , Get them out !!! ,you will pay them enough.

 

[king of pipes]

Get em back out you have a partial blockage which needs clearing . Kop

 

[slacky]

I’ve booked them in but earliest they can get to me is Wednesday where would the blockage be?

 

[king of pipes]

Not supposed to give advice on the open forum related to gas boiler repairs bud you have diagnosed the problem in your question slacky ? think of how your boiler heats the water and you have your answer . Tkop

 

[slacky]

Heat exchange? Would this affect the central heating ? I think I’ve read somewhere heating and hot water run through different parts of the heat exchange

When the boilers running it keeps going round in cycles. You hear it fire up pilot light ignites runs for 40-50 seconds then starts again. Is this correct? I’ve never noticed this before but can’t say I’ve been listening out for it

 

[king of pipes]

Central heating is normally ok hot water delivery is the problem . Kop

 

[slacky]

Should the boiler be doing what it’s doing ?

 

[king of pipes]

No it should not as I said you have a partial blockage where it is will need to be determined by your british gas engineer sorry I can't be anymore help

 

[slacky]

Didn’t think it did but just thought I’d ask to
Make sure I’m ready for when they get here

 

[Deleted member 32524]

Hope they did not advise a powerflush last time.

 

[slacky]

Nope they didn’t they ended up changing the pcb

 

[Aire]

Nope they didn’t they ended up changing the pcb

Typical of British gas, I don't think even half their engineers know what they're doing.