my potterton power max he115, keeps locking out, and displaying the code A01 , the water pressure is well up, its just over two years old, and its been a pain ever since we have it.

mr clark, November 2008

Not Gas-Safe registered do not touch!!!!!

Pete, November 2013

A01 lockout (flame failure)
Burner lights for 2 seconds. It will try 3x then lockout.

Try removing the air inlet manifold condensate build up over night, water seeps into the burner (water / gas no flame)
Air inlet --- no condensate trap.
Ionisation probe --- lower section of burner (no flame)

This is an old forum question but i have never seen this answer...

barry potter, December 2012

if i change the flexi hose to the expansion tank do i just take it of or do i have to bleed it

howie, February 2012

Replace the ionisation probe. Common fault on these.

bryan king, December 2010

I am in the same situation with lockouts and reset on a 4 year old Powermax HE boiler. Problem started early last year but I have now sent a mail to the chief executive of Potterton, Mr Martyn.Coffey at baxigroup.com

Surface mail to:
Martyn Coffey
Chief Executive
Potterton
Brooks House
Coventry Road
Warwick
CV34 4LL

Claim your money back, the product is not fit for purpose.

vince, June 2009

My Powermax 115 is 2.5 years old. The analogue pressure meter registers 2bar but the boiler shows A15 (low pressure) fault. I suspect the red Huba pressure transducer inside the boiler. I have taken the connector off and replaced it thinking that there might be dirt on the connections but it makes no difference. The Potterton engineer suggested there were voltages that could be measured to check this transducer but would not tell me where I should measure (because I am not "GasSafe" registered). Does anybody know where to check the voltages or indeed how difficult or expensive it is to replace the transducer?

Nigel, May 2009

Have you fixed it yet? - I have the same problem

David Whieldon, March 2009

I replaced the pressure switch but still had lockouts on same codes.
It turned out to be a blockage in the flexi hose into the expansion vessel - I poked it out with a small screwdriver.
Since then - hey presto- no lockout and pressure readings are stable.
The hose has a very small internel diameter, but even so it shouldn`t have blocked up since the anti scale treatment had been added.

Barry, January 2009

Hi Mr Clark,
have you sorted it out yet and if so what was it?
I have the same bolier, 3 years old and it has been very good. Lately however, I have been having lockout fault codes A15 (low pressure) and (E01) high pressure. I`ve checked the expansion vessel and it`s held 16Psi for the last 12 months.This is despite the manual guage reading 1.5 Bar. I reckon I need a new pressure sensor (red "Huba" type). It`s had anti scale treatment from new.
If this rings any bells with anyone else, please reply.
I`ll change the sensor anyway and report what happens as it doesn`t look too expensive

Barry, January 2009

prblem is ignition failure,this could be due to a number of different faults. firstly establish that you have the correct working gas pressure at the appliance ,once it has been established that it is correct,check the ignition spark is correct, check for sticking gas valve.

kev, November 2008