cooling fan on 2002 BMW X5

A/c cooling fan doesn't operate

Asked by for the 2002 BMW X5
Replace front thermo fan

If you are talking about the interior fan, replace the fan speed resistor
after 1 to 2 hours driving, we could hear the blower still on, but there was no wind, no cold air coming out of front outlets, but it was nomal for back seat outlet which we kept it on about one hour ,then the a/c (the front outlets)got back to normal. We had a new "the final stage blower motor resistor" in bmw dealer, the problem remains.
can you help? is this the same parts needed to be replaced?