Worcester 28i Junior Combi - luke warm water/high pressure.

[Mr_Matty]

Hello All,

I have recently moved and my new property has the above-mentioned combi boiler fitted.

I have two issues with it:

1) If I have my central heating on, hot water is intermittent. I tried running a bath this morning and gave it up as a bad job - the water just wasn't warm enough. I even tried running the hot tap very slowly to give the boiler chance to heat the water, but no joy.

2) The water pressure fluctuates - quite often over 3 bar. This worries me.

Does anyone have any experience of this boiler? Are these problems common? Is there anything obvious I can do to improve the performance of it?

Thanks a lot.

Mr Matty

 

[bengasman]

Start with checking the expansion vessel charge as described in faq

 

[Mr_Matty]

Thanks for the response, bengasman.

Are you referring to ChrisR's post named "2) REPRESSURISING THE PRESSURE VESSEL"?

If so, I will follow thoise instructions. Is this likely to resolve the heat problem as well?

Thanks,

Mr Matty

 

[bengasman]

Chris's post sounds like the one.
Probably won't solve the other problem.
Does your model have a secondary heatexchanger? If so, your system needs cleaning, common problem with these.

 

[Mr_Matty]

Hello bengasman,

Not entirely sure, but I believe there's only one heat exchanger on this model.

If there is two, how would I go about getting it cleaned?

One other thing to note is that house was empty for a number of months prior to me buying it, which could be the cause of the issues I've described.

Thanks,

Mr_Matty