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Your noise is almost certainly caused by either lime scale or sludge in the boiler the noise when switching from heating to water is the built in 3 way valve opening and closing water hammer behind valve seating very common on this model but noting to worry about

No I said they were developed 10 years ago not realised for sale I worked for potterton for 10 plus years

Of The top of my head the Space Saver doesn’t have a capillary thermostat but a electrical spot thermostat High Low and pump overrun check the wiring diagram to confirm in installation instructions or sometime inside case

Kingfisher Mf was developed 10 Years ago Building Regs 2 years do a search for part L on net and contact them for details

I have seen plentey of boilers that require pump overun, but it has not been wired in sometimes 10 or more years old some one turns boiler stat up and hay presto faults I always find (and i have worked on a help line for a few years start at basics then move on from there don't asumme anythink

Yes Oil Man is correct this boiler requires pump to be wired back to boiler and a permanant Live supply if this is correct check pump overun stat i think newer modles the pump overrun is provided by pcb timed delay

Thanks for that I am only a dumb heating engineer :wink: cant expect me to be able to work a computer as well. Don’t expect I will be a regular on this board as usually I don’t have the time but I am taking it easy for a few weeks with a bad back so if I can help any one out and relief my...

I have had same problem on your model of boiler that you have several times a de scale will not always cure this and it often requires a new heatexchanger quite an old model now i would look at a new boiler we always recomend Worcester for combi and a scale reducer

pcb or thermistor can not cause this problem you need to look at your 3 way valve if it is a Potterton or Myson with two little red neons than this is the likley cause

Be very careful with this these symptoms often arise if the heat exchanger has sooted up if so your appliance will BE GIVING OFF CARBON MONOXIDE CALL A CORGI REGISTERED INSTALLER OUT EMIDEIATLEY Gas Engineer for 24 years 8 with British Gas 10 with Potterton 6 Self Employed

With out trying to be funny, it doesn’t really mater if the customer is willing to pay for a fully pumped system or not that’s all your meant to be quoting for when you fill out log book you have to tick a box stating that the system is fitted in accordance to manufactures instructions and also...

The thermostat on your boiler ranges from 55 Oc On min To 82 Oc om max allow aprox 5 Oc either way yuse a thermometer digital on boiler flow to check

Hi i am new to this forum only found it today think you really should call time on this discussion. I have been to many installations by homeowners that have been first class and much better than most installations by Corgi registered plumbers also have been to 2 or 3 that were potentially very...

If my memory serves me correctly you don’t have a anti vacuum valve are you sure you are not talking about a temperature combined pressure relief valve these can often be re set by the customer and most have instructions on side of Tank

Personally I would never re fill a system with out adding an inhibitor and probably two bottles at that. What you need to look at is the positioning of the open vent and cold feed on the system its good practice these days to always have pump on the flow. Also it is not now possible to install...

Yes you can Try Plumbcentre or Travis Perkings although if you are carefull you can get 15mm fittings to fit on to 1/2 pipe

Switchmaster is no longer made most of these were replaced a good few years ago best advice is drain system and change for Honeywell 3 way valve do note that the wiring is not the same as Switchmaster is a fully motorised valve and Honeywell is a spring return valve

If you let me know what mode Neataheat you have I will try to help you there are several different models reneging from 5 to 30 years old

Having worked for Potterton for over15 years I can tell you that dripping taps cause all sorts of problems with Puma / combi range it will stop the boiler switching over to central Heating and also cause the Heat exchanger to scale UP :wink: :wink: