My airconditioner lines keep freezing up
Your filter is plugged, or the refrigerant is low, or it is getting too cold outside overnight (less than 60degf)
1) The two most common causes of insufficient air flow are dirty
filters and under sized ducts. A dirty filter limits air flow which in
turn allows the cooling coil’s temperature to drop below freezing.
Replacing the filter, monthly, usually alleviates this problem. Under
sized ducts will also cause the system to freeze
Because it also
limits the amount of air flowing over the cooling coil. This results in
lowering the coil temperature and allowing the humidity in the air to
collect on the coil and freeze.
2)Refrigerant charge. The refrigerant system teeters on a delicate
balance. If the system is not charged correctly, the system will not
function properly. This malfunction may result in the poor cooling
output and/or freezing up. Only a qualified, certified service
technician can properly test and charge a refrigerant system.
Outdoor temperature. If night time temperatures are too low, the system
will not operate properly, and freeze up may occur. The outdoor unit
does not function well in temperatures below 60 degrees F. A special
“ambient temperature” control must be installed to allow the unit to
run properly in cool temperatures, or you may open your windows and
Jun 05, 2009 |