Alls orted , Fan behind bulkhead.

I had checked all the wiring and there was no issues there. Once the fan was out i could investigate further and found that the thermal cut out had roten and coroded away stopping the flow of electricity at this point just above te carbon brush.

By passing was the only way so i will have to keepmy nostrils alert in future!!!!!

Anyhow i am nice and warm again now.

Next job Rear engine mount that has sheared. Hope thats a simple job!!!