Heated seat problem???

[Jmurd30]

I picked my ED30 up on Saturday, best car I’ve driven hands down.
However, over the past couple of days of blasting it to and from work (10 miles e/w) my back becomes extremely hot and sweaty over this short distance. The heat switch for the seat is set at zero and when I turn it up it does get hotter at the 4-5 mark but still very hot when switched off.
Can anybody tell me what the problem might be?
I’m dying to take it out for a proper drive but it’s so uncomfortable after a while with this problem.
All help is appreciated, thanks in advance.

[titchy]

Sounds like the relay is faulty not sure where it is on an old 3 door it was behind the l/h rear panel roughly where pass. elbow would be