Baxi System / Potterton System pcb schematic Diagram

[DP]

it was the flow switch rubber diagram just gone stiff.

Km

Contraption has a paddle with magnet on an arm that is lifted by flowing water to operate a reed switch. Magnet picks up metallic sediment in flowin water to eventually stop working. Baxi made a magnetic filter long before Mr Adey marketed his version to make millions

 

[Rampage77]

Surely it is a continuous check that the flow switch is made? So that if it fails during firing the burner is cut off?

Tony first the water flow switch needs to be in the open position Boiler powers on the pump turns on for around 5 or so seconds (switch closes) then the pump stops where the switch must disengage then pump starts up again and the flow switch engages again .only then the boiler continues the firing sequence .

Baxi must want to be sure that the Boiler does not fire up without a flow of water in the heat exchange.

I had 3 pcbs there all coming up with pump fault indicator spent a few days trying to find a fault on all these boards when there was none . it was the flow switch rubber diagram just gone stiff.

baxi doesn't mention this in the replacement pcb Notes .

Cought me out ,And all them pcbs boards where from RGIs thinking there faulty .

I "think" it was to stop engineers linking the switch out too

 

[Dan Robinson]

I "think" it was to stop engineers linking the switch out too

Shame they couldn't put that foresight into designing a decent boiler/PCB in the first place.

 

[philthyballs]

yep

 

[philthyballs]

it was the flow switch rubber diagram just gone stiff.

Were you able to sketch out a new diagram?

yep sam i have the other diagram for the newer pcb . if u want it i.ll upload it for u

 

[Sam Gangee]

Cool. I'm not a plumber, just an interested electronician.