Worcester 24 cdi puzzle

[YellowJoe]

Hi all

I have an 18 year old Worcester 24cdi boiler that is playing up and was hoping someone on here might be able to help diagnose the rather strange issues from the symptoms:

• The hot water heats all the time the boiler is on, even if the taps aren't on and the water temperature is turned down low. It continually fires up to a very very hot heat. The pump and heat exchanger are boiling hot to touch, but the thermostat doesn't make the boiler cut out.
• The central heating is not working at all. When the thermostat is turned up high the light appears for heating on the boiler but at no point does the flame light or the radiators begin to get warm.
• The diverter valve is stuck out at all times (which probably partly answers the question). If you manually push/wedge it in the hot water stops heating but the radiators still don't heat up.
• The pipe that takes hot heating water away from the boiler is boiling hot but the return pipe is very cold.
• The boiler has a history of losing pressure but it seems ok at the moment.
• The pipes have been blocked in the past but were cleared last year.

Current plan is to get a new diverter switch and probably a new heat exchanger too. I think this may stop the water continually boiling up, but I'm not convinced this will fix the radiator issue. Any thoughts and suggestions would be very welcome. I've got 2 young kids so I need to get it sorted before winter or my wife will kill me!

 

[townfanjon]

18 years old pal , I would seriously consider a new one

 

[sammathias]

Indeed new boiler time. Shouldn't be continually firing on hot water if no taps are on tho. Leak under screed..

 

[snowhead]

I think your wife definitely will kill you if you throw money at random parts and the boiler fails at a later date.

Either get someone qualified to check the faults or save some time and money and get some quotes for a new boiler.

 

[king of pipes]

Time for a new boiler we have a bad winter coming this year and you don't want to get caught out 18years is past its life expectancy. Kop

 

[YellowJoe]

Thanks guys I think you're probably right. Trying to avoid the inevitable.

Can anyone suggest the best offers/deals on new boilers and installation at the moment? Something with a decent warranty would be ideal.

Cheers

 

[sammathias]

Depends on budget but I would recommend vaillant boilers all the way imo

 

[Harvest Fields]

Vaillant for me also

 

[townfanjon]

Thanks guys I think you're probably right. Trying to avoid the inevitable.

Can anyone suggest the best offers/deals on new boilers and installation at the moment? Something with a decent warranty would be ideal.

Cheers

All boilers come with massive warrenty these days , pick one of these .. Viessmann, Vaillant or Baxi

 

[Harvest Fields]

All boilers come with massive warrenty these days , pick one of these .. Viessmann, Vaillant or Baxi

As long as the engineer is accredited to the manufacturer