ABC pump installed.

[dannyfiveforty]

Thanks for having listen Malcolm, I will see how it goes these next few days and see if there's any change.

Cheers

 

[alexanderfoti]

Both mine also do not hiss, eve after a long run. Saying that, I wouldn't be too worried about it

 

[Swildey1985]

I have the same problem after doing an abc flush just now. Last about 20 seconds after i turn off, on abc errors. The hissing was not there before the flush, did you ever manage to solve the issue? Thanks steve