The pump is the little cylinder on the bracket. Just put power to it to see if it works. It will click once if hard wired
No this should be fixed down to the heater. It's actually a safety cut off so the system cannot over heat. Be careful if you take it apart as there a glass for though the middle of it and you wouldn't want that to fall out and break
Thanks very much icepug can assure you I have no intent on meddling with this unit I'm going to try find someone that knows what they are doing lol
I hope you find someone. I had to rebuild mine myself. They are quiet ingenious when you get down to the nits and bolts of it. There was on vzi who used to refurb them. Maybe worth a quick search.
This is the guy from Vzi, he serviced mine His name is Dave and can be reached at david {dot} curl [at] ntl world (dot) com