I have a heat pump outside my house in an enclosure that was required by the community. Clearances are 2 1/2" 4", 10" and about 24" around the unit. I have had two compressors replaced and it's acting funny again. The black insulation around the large part of the lineset has some melted areas and some scorched areas, and the lineset itself is very discolored. Could the small clearances around the heat pump be creating these high temps?