E46 318i Climate control problem

[funkee]

Hi,

Hopefully someone may be able to help. Ive got a 2000 318i with climate control.
The air cond works fine, seems to cool at the correct temp. Problem is when its been running for about half an hour I notice the cabin starts warming up.

The air cond light is still running, hot air is NOT coming out of the vents, seems the vents close? Very little air is blown from the vents, I turn the fan speed on full, I can hear the fan go louder however no air comes from any of the vents on the floor, centre or dash.

To fix I turn off the climate control for a few mins then back on. Fixes the problem sometimes, but will come back 5-10 mins later.

Hopefully ive provided enough detail. Anyone seen this before?

Thanks