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
Thanks to everyone for their contributions. In addition, here's an applicable blurb from owner's manual I found online...
OPERATION DURING COOLER NIGHTS
It is important, when the outdoor temperature drops in the evening or during the night to below 75°F that the thermostat (temperature control) be set at a midpoint between “warmer” and “cooler”. If the setting is at “cooler”, the evaporator coil may become iced-up and stop cooling. During the day when the temperatures have risen above 75°F, reset the thermostat switch to the desired setting.
NOTE: Should icing-up occur, it is necessary to let the cooling (evaporator) coil defrost before normal cooling operation is resumed. During this time, operate the unit in the “HIGH FAN” position with the system at maximum air flow. When increased or full air flow is observed, the cooling coil should be clear of ice.
OPERATION DURING COOLER NIGHTS
It is important, when the outdoor temperature drops in the evening or during the night to below 75°F that the thermostat (temperature control) be set at a midpoint between “warmer” and “cooler”. If the setting is at “cooler”, the evaporator coil may become iced-up and stop cooling. During the day when the temperatures have risen above 75°F, reset the thermostat switch to the desired setting.
NOTE: Should icing-up occur, it is necessary to let the cooling (evaporator) coil defrost before normal cooling operation is resumed. During this time, operate the unit in the “HIGH FAN” position with the system at maximum air flow. When increased or full air flow is observed, the cooling coil should be clear of ice.
