Have AUX heating installed from factory.
Heater/webasto runs ok and heats, but the interiour fans dont blow hot air into cabin off the car . What is the problem, anybody?

Have the remote control, press the button on. No lights are blinking but the heater starts, no air is blown into the cabin? The red fan light doesnt come on either, but the heater works fine..

Anybody had or know what the problem is?