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[Sir Tigger KC]

Glow worm Betacom C24 combi working fine except it has low pressure on the hot water taps.  Nothing wrong with the plumbing as the cold water has good pressure.

Any ideas chaps?     TIA! 

[Ever Ready]

Pressure the same on all taps?

[Sir Tigger KC]

Yep.

[Ever Ready]

Never liked combis but they are very popular.

Heating ok? common link with the hot water via the internal pump.

Do you have a manual or is there one online?


Just had Scottish gas fix ours for a one off price of £99.

Needed an electrode and a pcb.

Warm as toast now

[Ever Ready]

What is the system pressure?

Found a manual online if you need it.

https://www.glow-worm.co.uk/glow-worm/betacom-c-july-09-157123.pdf

[Sir Tigger KC]

Thanks for that! 

Heating is fine. It's just the water pressure at the hot taps.    A bit of Googling suggests there might be a lime filter that's clogged. 

[STEMO]

Thanks for that! 

Heating is fine. It's just the water pressure at the hot taps.    A bit of Googling suggests there might be a lime filter that's clogged. 

Are you going to pay someone to fix it? Or take it to bits yourself and pay someone to put it back together and fix it?

[Sir Tigger KC]

Thanks for that! 

Heating is fine. It's just the water pressure at the hot taps.    A bit of Googling suggests there might be a lime filter that's clogged. 

Are you going to pay someone to fix it? Or take it to bits yourself and pay someone to put it back together and fix it?

What do you think? 

[STEMO]

Thanks for that! 

Heating is fine. It's just the water pressure at the hot taps.    A bit of Googling suggests there might be a lime filter that's clogged. 

Are you going to pay someone to fix it? Or take it to bits yourself and pay someone to put it back together and fix it?

What do you think? 

I don't know, that's why I asked 

[106pete]

Taking a guess at a sticking diverter valve.... hit it with a hammer

[TD]

Just had my Vaillant serviced yesterday

Apart from cleaning out the magnetic filter for the heating circuit, the plumber removed a plastic round container from underneath the boiler and his comment was "theres not much crap in there either" . Both got rinsed out under the cold tap, before refitting.

Perhaps you have something similar, I assume the container he removed from the boiler was something to do with the hot water 

Maybe best to get it serviced before the onslaught of winter 

My plumber charged me £40 for the service (he did do other 'stuff' apart from cleaning the filters) plus I needed his sig in the service book for the 7 year warranty 

[Shackeng]

Combis have a dual purpose, CH and HW heat exchanger, and although the heating may be OK, if you are in a hard water area and the water is not softened, there is probably limescale in the HW flow side of the exchanger causing your problem. (Beware that if this is the case, you may also have limescale in the CH side also, leading to gradual reduction in heat output.) If your combi has an aluminium exchanger, it is probably not allowed by the maker to soften the water inlet into the exchanger. It is not a difficult job to remove these units on most combis, and you then have the option of descaling it (difficult) or fitting new.

[Sir Tigger KC]

Yes a clogged heat exchanger has crossed my mind and could prove expensive. 

I like the idea of hitting it with a hammer! 

[Marks DTM Calib]

They usually have a mesh filter on the feed which supplies the hot water, they clog up with crudd.....the instruction manual shows one fitted to the cold water inlet.....

[Sir Tigger KC]

They usually have a mesh filter on the feed which supplies the hot water, they clog up with crudd.....the instruction manual shows one fitted to the cold water inlet.....

Ah yes, I see that now. I'll have a look at that later. Thanks!