Originally Posted by Barb
Thanks Danny and Linda.
We are wondering what part of the Coleman Mach AC Units causes the fan speeds. All summer we haven’t had enough AC to cool the rig. By 4:00 it’s up to 88. We’re in FL so It’s hot. We haven’t had this problem before. I thought it was the basement AC. Barbara
Should be 3 settings on the "fan" switch "hi, lo, auto" if set to "auto" the fan will only run when the A/C compressor starts, set to "hi" or "lo" the fan will run continuously til you set it differently. Honestly I couldn't ever tell the difference between hi & lo so set it to hi.
FYI that fan switch does not control the furnace fan, it comes on when the furnace fires up, but if that switch set to hi or lo the A/C fan will be blowing also. The A/C only blows from the ceiling as will the heat pump if equipped, the furnace ONLY blows from the floor registers.
In hot areas with both A/Cs running 24/7 we could barely keep it comfortable even with solar shades on all the windows & the awning out. Running a couple fans, 1 inlo bedroom & another on the opposite end of the coach, will help tremendously.
Search this forum for countless mods to A/C system to improve cooling. Sounds like this rv is new to you so not sure if the PO did any of the modifications.