Electrical problems / car won't start after rain downpour

[Rincontrx650]

Hello all, my first post. Thanks for a great site.

I bought my Boxster at the begining of September just before my holidays. took 3 weeks off work and got 1.5 days of sunshine that's it.

My car got soaked for 2 days and my heater fan stopped working everything else is fine, after reading the other posts I found that all my drain holes were plugged so I cleaned them all put a little electric heater with fan and have dried out my car.

I bought a shower curtain to cover the roof and engine access cover which I hold down with magnets and then put my car cover on top as it does not seem to be 100% waterproof as the add on Ebay claimed it was...

Anyhow I checked all my fuses and still the heater/defrost motor will not come on.

My AC used to work fine but when I press on the AC button now nothing happens... I ordered a manual and am awaiting delivery.

Any suggestions would be welcomed.

Thanks.
TC