Sludge on a closed/sealed Combi system

[diamondgas]

yes sorry steve.....i do think its a boiler fault but do not have the head for pumas tonight......shes all yours.....good luck LOL

Puma ??? I thought the op was talking baxi conbi 80... ! sheeeeeeeeeeeeeesh!!! 🙂


Lets go puma pw123 🙂 Can we confirm the model of the boiler you have in your home 🙂

 

[Pw123]

Puma ??? I thought the op was talking baxi conbi 80... ! sheeeeeeeeeeeeeesh!!! 🙂


Lets go puma pw123 🙂 Can we confirm the model of the boiler you have in your home 🙂

diamondgas - it is Potterton Combi 80.

 

[stevetheplumber]

generally speaking if the system works for any length of time even intermitently and all the rads get hot you dont need a powerflush
with those old rads ive no doubt there is a fair bit of dirt in the system and to bg thats an oppertunity to sell you a very exspensive power flush but with those rads youlll find every one will want a high price to flush it all one pipe systems are difficult to flush and disturbing those valve would be a night mare if one was to break it would mean a new rad for sure
i would be thinking about new rads and pipework before spending money on anything else

 

[Billy Bob Bob]

this one?
http://www.acwilgar.co.uk/Boiler-Manual-PDF/Baxi/BAXI%20COMBI%2080%20GCNo.47-393-03.pdf

 

[Pw123]

this one?
http://www.acwilgar.co.uk/Boiler-Manual-PDF/Baxi/BAXI COMBI 80 GCNo.47-393-03.pdf

Spot on gas man - based on page 38 of this manual, I thought the issue is with the Hot Water Flow Switch but as you suggested in the thread, it could be the diverter valve. What do you think based on this user manual?

 

[Pw123]

generally speaking if the system works for any length of time even intermitently and all the rads get hot you dont need a powerflush
with those old rads ive no doubt there is a fair bit of dirt in the system and to bg thats an oppertunity to sell you a very exspensive power flush but with those rads youlll find every one will want a high price to flush it all one pipe systems are difficult to flush and disturbing those valve would be a night mare if one was to break it would mean a new rad for sure
i would be thinking about new rads and pipework before spending money on anything else

Steve - In long run, yes I would replace the rads and pipework but cant afford at this stage so I need to get the boiler fixed as soon as possible so that the kids dont have to suffer in the winter.

 

[Billy Bob Bob]

tbh it could be the wax capsule sticking or the divertor the potterton combi 80 became the potterton puma they are very difficult boilers to work on and parts are very dear a main heat exchanger for example is big bucks,i would give baxi a ring(pottertons owners) and get a one off service visit,or find someone with specific knowledge of the puma/80

 

[diamondgas]

Took some getting to know the boiler we're talking about here pw123, as sometimes happens here 🙂

The hot water section/micro switch is prone to sticking intermittently on these boilers ... has nothing to do with the age or crappiness of your system!! Usually strestched diaphragm or sticking spindle in my experience .. have water section replaced .. IMHO got jack to so with the first world war rads you have...

🙂

 

[Pw123]

Took some getting to know the boiler we're talking about here pw123, as sometimes happens here 🙂

The hot water section/micro switch is prone to sticking intermittently on these boilers ... has nothing to do with the age or crappiness of your system!! Usually strestched diaphragm or sticking spindle in my experience .. have water section replaced .. IMHO got jack to so with the first world war rads you have...

🙂

Hi Steve - I know it is crappy radiator/system that we have but somehow got to live with it for the time being. Could you let me know what to say to the BG man when he comes in tomorrow? i.e. what potentially could be faulty?

Thansk

 

[Pw123]

tbh it could be the wax capsule sticking or the divertor the potterton combi 80 became the potterton puma they are very difficult boilers to work on and parts are very dear a main heat exchanger for example is big bucks,i would give baxi a ring(pottertons owners) and get a one off service visit,or find someone with specific knowledge of the puma/80

gas man - I have a service contract with BG so have called them again. If the BG engineer cant help, then I will take your advise and call Baxi. Thanks

 

[diamondgas]

Hi Steve - I know it is crappy radiator/system that we have but somehow got to live with it for the time being. Could you let me know what to say to the BG man when he comes in tomorrow? i.e. what potentially could be faulty?

Thansk

Suggest to the engineer that you've heard that it might be a sticking hot water micro switch coz the boiler seems to stay on when tap is turned off and there is no call for central heating!

If they get bull --sh --ty then ask them to replace it and if you're wrong you'll pay for the part!! No worries they can never quote you on that!" LOL

 

[Pw123]

Suggest to the engineer that you've heard that it might be a sticking hot water micro switch coz the boiler seems to stay on when tap is turned off and there is no call for central heating!

If they get bull --sh --ty then ask them to replace it and if you're wrong you'll pay for the part!! No worries they can never quote you on that!" LOL

Thanks Steve - will try that tomorrow.

 

[Pw123]

Thanks Steve - will try that tomorrow.

They are going to change the hot water micro switch tomorrow (hopefully)