Originally Posted by
pani_k
Does the DV dump to atmosphere or is it more or less silent? Unless it is leaking or it dumps to atmosphere it wouldn't be that.
It is atmospheric. Looks like its the issue. I have the batt disconnected at the minute so I'll stick it back on when I get a chance and run it for the 15 minutes with everything on then bring it for a short run. T see how I get on but I'll order a new recirculating valve today.