Glow Worm 30cxi - Main PCB blowing, any advice?

[SlammerUK]

Good Morning Everyone,

I have a Glow Worm 30cxi Condensing Combi Boiler.

Last week, the main pcb died. I got the board replaced (4000124180). Boiler came back on, happy days.

I did notice that the water was nowhere near as hot as it should be and been advised the Plate to Plate Heat Exchanger probably needs cleaning/replacing and would fix this issue, so thought I'd get that done if the boiler was still functioning in a weeks time.

Then this morning, the board died again. So its lasted approx 72 hours before blowing again :veryangry2:

If it helps the diagnosis, the central heating has been turned off ! Its purely been used for hot water so has had very little use.

Obviously getting a new board and fitting it, is going to have the same effect as there is an underlying issue. Is there a common fault that could be causing this? Or anything I should be checking?


Im surprised/disappointed that any part which has developed a fault can take out the main board like this? Surely if its overheating for example due to the whole system + plates needing flushing, it should just shut down?!


Thanks for taking the time to read and hopefully help me solve this 🙂


Thanks, Mark

 

[Dotty]

You need a competent gsr.

Please read the forum rules.