I was dreading draining the CH down as the last few times I've done it, it has been an absolute pig to get going again after.
I drain it down, then when I refill, I bleed all the rads, bleed the grundfos pump, open the bleed valve next to the pump.
When I turn the boiler on, it kicks in but then gives the f22 error and shuts down. It won't then kick in again for a while even after a reset.
As I say it has done this for a few years now, only when draining down. After much messing it has got going again each time and been fine after.
I read about the fact that sometimes the f22 error can be from the pump being too fast, so I tried it on setting 1 instead of 2. No change.
Above the boiler on the flow and return pipes there are a couple of drain points. I've tried attaching a house to these and letting the water come through into a bucket. The flow did splutter a bit, but still no change. Both are now flowing well.
Spent a few hours trying to get it to start back up again. Think this might be the longest yet!
Any ideas?
It has been running fine since the last drain down perhaps 2 years ago.
Thanks
I drain it down, then when I refill, I bleed all the rads, bleed the grundfos pump, open the bleed valve next to the pump.
When I turn the boiler on, it kicks in but then gives the f22 error and shuts down. It won't then kick in again for a while even after a reset.
As I say it has done this for a few years now, only when draining down. After much messing it has got going again each time and been fine after.
I read about the fact that sometimes the f22 error can be from the pump being too fast, so I tried it on setting 1 instead of 2. No change.
Above the boiler on the flow and return pipes there are a couple of drain points. I've tried attaching a house to these and letting the water come through into a bucket. The flow did splutter a bit, but still no change. Both are now flowing well.
Spent a few hours trying to get it to start back up again. Think this might be the longest yet!
Any ideas?
It has been running fine since the last drain down perhaps 2 years ago.
Thanks