My boiler has the 'low system pressure' indicator light on. I have tried everything and increased the pressure to the required 1mbar level using a valve and also bled the radiators of air pockets and there is no air left I think. However the low pressure indicator is still on and I was wondering if anyone knew where I could get hold of a free operating/user manual for the potterton puma 80/80e boiler? I have already tried the Potterton website!

Mr F Khan, January 2006

after bleeding radiator how do repressurise my boiler help ? is it self filling help asap

danny short, December 2010

http://www.partsarena.com/baxi/System/index.htm
Select:
Potterton > Boiler > Puma ...

A.k., September 2009

low water pressure switch is blocked or faulty(most likely blocked.it is isituated behind the pcb and has 3 connections but only 2 wires connected to it.drain the pressure from the boiler and unscrew the switch...unblock it and replace, then pressurise system and bleed.

senna, January 2009

the user manual will not tell you what is wrong with your boiler but i can and a lot less expensive than a manual would cost you.
i live in stockport can i help you

dtphenderson@hotmail.com, November 2007

I had a similar problem. Having bled a radiator the low pressure light came on, and would not go off despite repressurising the system.
Despite the pressure guage showing the water pressure at the right level, the pressure sensor light remained on. I could not find a manual online, but the flowchart and wiring diagram on the back of the boiler cover were invaluable.

Solution: I identified the yellow wires that connected the electrical unit to the water pressure sensor. With POWER OFF, pilot and CH on, front and bottom cover removed, and electrical unit hinged forward and down (by undoing retaining screw above) I could get to the pressure sensor behind the electrical unit. I disconnected the sensor (2 yellow wires) and (carefully) put the power on. The boiler fired. I then switched power off, reconnected yellow wires (tried both ways - there being no way to tell which yellow wire going to which connector) and the boiler now works fine. I assume the sensor needs to 'reset' by disconnecting it from the electrical unit?

Mark, December 2006

http://www.partsarena.com/baxi/System/DATA/Dx/DS1/installation/2248/I04-2248/I04-2248.htm

rufus, May 2006

this is the water pressure flow switch and retails at around 15 - 20 pounds + vat at plumb centers or heating spares shops plumb centers parts centre number for this spare is 452194

mike, February 2006