Vaillant EcoTec Plus 428

[jaydebruyne]

It would just modulate down.

Is that a Vaillant thing then cos worcesters just overheat!!

 

[Leo21]

Is that a Vaillant thing then cos worcesters just overheat!!

Yeah, they read flow and return temps.
There's also a stupid filter on these, it's placed so it stops dirt leaving the boiler! I've had an 824 that was doing a similar thing, I removed the filter. I had to break it into pieces to remove it, and then flushed the heat exchanger through. Into a bucket, arkward but do able. The filter is on the bottom left, where the flow leaves the boiler.

 

[jaydebruyne]

Yeah, they read flow and return temps.
There's also a stupid filter on these, it's placed so it stops dirt leaving the boiler! I've had an 824 that was doing a similar thing, I removed the filter. I had to break it into pieces to remove it, and then flushed the heat exchanger through. Into a bucket, arkward but do able. The filter is on the bottom left, where the flow leaves the boiler.

So basically get a new filter as I'll break the existing one trying to get it out! Stupid place to put a filter.. I saw an install where someone had put a magnaclean on the flow lol

 

[Leo21]

No, just break it out and leave it out. It actually doesn't benefit from being there imo.