Potterton Suprima 50L - Continuing Saga

[Kevin]

Hello all,

I have had a continuing issue with my Potterton Suprima 50L boiler. For over 6 weeks I have had the boiler lock out (red flashing LED once per second) up to 6 times per evening. I have had Heat Team come out to it 5 times and they have replaced the APS (twice) and the PCB (twice). On the last visit they told me I had a blockage on the cold water feed from the header tank for the system and that I should get a plumber to replace it. So I did. I turned all the heating back on and it ran for 5 hours fine. Then at 7PM in the evening it locked out again. Can anyone give me any advice as to what may be causing this issue?

Kevin.

[geoff]

In message , Kevin writes

Do you have a red HT lead ?

[Kevin]

Sorry Geoff I'm a complete nonce when it comes to electronics. I've not personally had the cover off the boiler to inspect the wiring. I'll take a look and get back to you on that. Are you thinking that the HT lead is carbonfibre as opposed to copper? I've read that this can be a cause of failure.

Kevin.

[geoff]

you didn't mean that, did you ...

Wikipedia - "Nonce (slang), a sex offender or child sexual abuser"

front right hand panel is on a hinge an angles down - the HT lead is a single lead running up to the electrode

If you have a new module (white box as opposed to a pcb) it's highly unlikely that it's not been changed, but let's eliminate the obvious first

it's as unreliable as the pcb !

[Kevin]

Errr, no I didn't mean that. I didn't even know that's what it meant. I apologise for any offence caused.

[geoff]

In message , Kevin writes

No offence,

If you use a word with such connotations which you don't know of, it seemed a good idea to tell you

[Geo]

Aawh - why not? Not like you to miss an opportunity... :-) Geo

[geoff]

That's me in fluffy mode, you see ...