AC evaporator coil freezing up
Good afternoon - First-time RV owners... We have a 2015 Jayco JayFlight 32BHDS that we took delivery on in December. It has two Coleman Mach rooftop AC units (15K BTU main ducted unit with wall-mou...
Forum Discussion
Freezing of the evaporator (Cold) coil happens for one of several reasons.
I list the most common ones in no particular order
1: Reduced/impaired air flow.. Some say just running the blower/fan on high is enough to prevent it..By all means clean the intake filters
2: LOW Coolant,, The "Freon" (not really any more) used if low can cause freeze up.. IF it's leaking coolant replacement may be in order
3: Many RV air conditioners have a frost sensor.. This is a probe stuck in the bottom of the evaporator.... If it is lying in the drip tray it does not work.
Very high humidity and dirt can combine to cause all sorts of problems.
I list the most common ones in no particular order
1: Reduced/impaired air flow.. Some say just running the blower/fan on high is enough to prevent it..By all means clean the intake filters
2: LOW Coolant,, The "Freon" (not really any more) used if low can cause freeze up.. IF it's leaking coolant replacement may be in order
3: Many RV air conditioners have a frost sensor.. This is a probe stuck in the bottom of the evaporator.... If it is lying in the drip tray it does not work.
Very high humidity and dirt can combine to cause all sorts of problems.
