On 03/03/2020 06:35, Stephen wrote:
I only got a second or two before the fuse blew, but I think the noise
came from the pump. Would that make sense? I've read that pumps can
seize. If it was seized, would it stall a draw a higer current than
usual and blow the fuse?

The answer is yes. Most pumps have a central place where you can remove
a cover with a slotted screwdriver and rotate the spindle by hand or
using a tool. That can free up any crud enough to get the pump working
again. Until you can source a new pump and go through the faff of
draining down refitting adding the fernox and then trying to get all the
air out of the CH. I wish you luck.



--
In a Time of Universal Deceit, Telling the Truth Is a Revolutionary Act.

- George Orwell