I have an intermittent error code 407 on a Swift Marbury (2021) heating system. Which cleares itself after some time has passed. I’m hoping for some pointers as to sorting the problem.
230V is definitely on, fuse in the most stupid place to put a fuse is fine.
Thanks in advance.
Tin
230V is definitely on, fuse in the most stupid place to put a fuse is fine.
Thanks in advance.
Tin