Help! Overheating Danfoss box, worried about fire

[HeartsAglow]

I know IABU to post this in AIBU but posting for traffic, sorry.

I’ve just discovered that my Danfoss ‘receiver box’ for my underfloor heating is hot and scorched. I’ve been trying to find a way to turn it off but I’m stumped and their customer care is closed. Their manual doesn’t explain it either. Does anyone have one of these or know about this sort of thing? I just want to be able to turn it off so I can relax.

Can you turn it off at the fuse board?

I looked at the fuse board but I can’t work out which one relates to it, and it doesn’t even have a light to tell me if it’s off or on. I might have to work through the switches and see which one makes it cool down

I’ve gone through the switches, the only thing that will turn it off is the switch that turns off all the sockets in the flat