POTTERTON SUPRIMA 40HE FAULT

[KYOTE]

Hi,

I have been asked to look at a mates faulty boiler!

The three lights on the front were all out! There was power going to the boiler so I assumed a problem with the PCB.

I acquired a new PCB and installed it

We then had an array of lights etc and all was looking good.

BUT! When I connected the last multi pin connector in the side of the PCB everything changed. The power light just flashed and we had no other responses.

If I disconnect the connector the fan starts and it sounds like everything is going to work.....but 'locks out' after a few minutes!!

If I reconnect the connector it just reverts to the power on light flashing and nothing else!!

I have traced the pin connector and it is the GAS VALVE cable....two wire black and red!

Is this pointing to a faulty valve or something else??

Cheers
CRAIG

 

[Dan Robinson]

It's pointing to you calling a professional before you do something that at best will be expensive or worst kill someone.

 

[KYOTE]

Thank you for you help.....very constructive!

 

[45yearsagasman]

I have been asked to look at a mates faulty boiler!

If you're gassafe registered, then join the combustion chamber and get all the advice you require. Gas related advice is not permitted on the open forum.

 

[Dan Robinson]

Thank you for you help.....very constructive!

Sarcasm will get you nowhere.

 

[KYOTE]

I was asking for an opinion......I never said I was going to fix it myself.
If I can then impart this information to a third party then it may be possible to keep costs etc. down and get a mate back in the warm!!

 

[45yearsagasman]

Why would your "mate" ask you to look at his boiler knowing full well that you're not qualified to repair it?
You've already fitted a pcb after guesswork. Tell your mate to call a pro.

 

[KYOTE]

Power to the PCB........Nothing out!!

Not quite guesswork...more 'common sense!'

And you know I'm not qualified because???

 

[bernardgreen]

.I never said I was going to fix it myself.

is contrary to

I acquired a new PCB and installed it

Not quite guesswork...more 'common sense!'

What diagnostics did you perform before you decided that is was common sense to change the PCB

How do you know the PCB is good one ? Acquired from where ?,

 

[KYOTE]

I understand that the PCB in its 'box' is a replaceable item.....

I had power going to the PCB but no evidence that there was any power after the switch! PCB came from a reputable dealer

Gas valves are beyond my scope so I would have been able to draw a line between DIY and call a pro.

 

[Agile]

I was asking for an opinion......I never said I was going to fix it myself.

So if not trying to fix it then why did you change the PCB ???

 

[Agile]

I am on a comedy course!

Always looking out for new jokes!

Quite a good joke for engineers that you spent your money on something which would not fix the problem!

 

[Agile]

Not so funny that you are attempting boiler repairs when not Gas Safe registered and whilst uninsured!

 

[KYOTE]

Start with the parts you can repair.....work your way through until you have to call the professionals!!

The PCB was 'obviously' faulty or the light would have been on! Once replace the lights are working.

Do you need to be GAS SAFE to change a PCB?

 

[Dan Robinson]

The PCB was 'obviously' faulty or the light would have been on! Once replace the lights are working.

Really? So its not possible for another faulty component to cause a boiler pcb to appear dead?

Do you need to be GAS SAFE to change a PCB?

Perhaps. You have to be competent.

Start with the parts you can repair.

You can't though can you.

It should be:

"Start with the bits that are broken"


If you had half an idea, you would know that these boilers can have primary faults that make it appear the board is dead.... a duff PCB is only a secondary issue.

Call a professional before you embarrass yourself further.