if the pump makes a noise when you turn on i take it thats working?
if the pipes are frozen when you turn it on will that knacker it automatically?
unfirtunately i cant take my pumps out like some on here as they are wired in and it was factory fitted system. having seen some diy wfp kits i can see the advantages of setting it up in such a way that pumps and filters could be easily portable for when weather is like this to save them.