no heat in side car when i put fan on?

my car heater gets hot if i don't put the fan on but when i put the fan on it stays hot for about one minute then i goes cold no heat coming into the interior compartment??
renault laguna l reg (1996) 1997cc rt petrol
simon moore, November 2005


done
possibly the thermostat is gone

n, January 2007
Sounds like the heater flaps inside the dash may be broke.

No Name, February 2006
if rads cold change the thermostate,

lee, November 2005
link Click here to see other fixes for Renault Laguna.