Noisy Potterton Suprima Boiler (with video and sound)

[kiteman69]

Afternoon board.

Well 2 years after getting some fantastic advice on here regarding my Potterton Suprima boiler locking out.

(I got the PCB changed and all has been smashing)

I have now got a new fault with it.

All of a sudden the boiler does not fire up at all but instead makes a sound like relay chatter.

I have found an identical video on youtube of the fault

http://www.youtube.com/watch?v=8ay_2qbKOQc

I hope the poster does not mind me using it.


Anyway, currently there are no ligts on the boiler (no red, no green).

There is 240v getting into the front of the boiler though.

When either HW or CH is called for the PCB makes a noisy buzzing sound as can be heard in the above video. When nothing is being called the boiler is quiet.

This noise is still there when I turn the knob on the front of the card to 0.
(Sorry for the poor description)

Has the PCB gone again, or is there another problem that needs addressing...... a valve perhaps.

Thanks in advance for any help or guidance that can be given

 

[Agile]

Based on your rather scanty description it seems no PCB lights mean a lack of supply or a faulty PCB !

Tony

 

[pallen5000]

If its the same as the video, I would go for faulty PCB

 

[kiteman69]

If its the same as the video, I would go for faulty PCB

Thank you

 

[Agile]

Changing the PCB would be a very expensive repair if in fact it was OK and there was just no mains supply to it !

Tony

 

[pallen5000]

Changing the PCB would be a very expensive repair if in fact it was OK and there was just no mains supply to it !

Tony

I cant see how the one in the video is making a noise like a dodgy relay without power going to it?

 

[picasso]

I would make sure the switched live was stable before changing the pcb.

 

[ggbheating]

From the sound of that i would say pcb but without carrying out the necessary checks it would almost be impossible to diagnose, I would suggest getting a heat engineer to check it out.

 

[Terry lambert]

I didn't know people were allowed to advertise on here, that two I've seen in the last couple of days