No heating.. Climate control lights work, no front or rear heating. AC clicks....

Had some water sloshing and drained all that out (design fault).

Now no heating in the front or back though lights come on for the fan on the controls.

Could it be the relay which I assume is under the hood (2008 Grand C4) or could it be the resistor in the front (Would that stop the rear ones coming on too)???

Any help very very welcome!!! PLEASE!

Michael