Webasto Airtop 2000s Problems

[SB24Svn]

I have been using the heater successfully (thanks to your help). However today the controller wouldn't turn on. I had a look and coming from the back of the controller, there is a red wire and a brown wire that has come loose. It looked like the brown was connected to 2 negative black wires so I reconnected those. The red however I'm not sure - I have connected it to another positive and the heater comes on automatically and won't turn off which isn't how it usually behaves. However I can't see anywhere else I haven't tried. It's the bottom left and bottom middle wires in the image marked in blue. Can you please advise at all?

 

[oldiebut goodie]

If you are taking power from the leisure battery for the heater:
The thin black, blue, white and red are ok.
Thicker brown jumped from 12 to 4 is ok.
I wire the thick red power from 11 jumped to 10.

Your black and grey are used to connect to the vehicles acc position and instrument lights - very rarely wired this way as this is for when the heater is wired to the vehicle battery.

Don't forget that continental wiring uses black for power - it is not a negative/ground. Thin red here is power switched to thin black. (switch on and off signal)