Air condition freezing up

Make sure the condensate drain is clean and clear of any debris. With the indoor unit off, Remove the inspection panel and pour a gallon mixture of 10% Bleach to Water solution in the drain pan. Do not overflow the pan but check to make sure there is flow to the outside or drain. Clean out the drain hose if you have to. A freezing coil is a sign of either not enough air going across it or not enough charge in the system. Check to make sure all of the return air vents as well as supply vents are in full open and unrestricted. If they are, you will need to have the charge checked. If this turns out good, have your technician install an anti-freeze kit. This kit will temporarly turn off the compressor unit for a short period when the sensor in the kit experiences a freezing condition. Then after a bit, it will turn on the compressor. It may not cool as much as it was, but it may get you thru. Good Luck!

Have an HVAC tech recover the refrigerant from the unit an recyle it during the recovery. Remove any old filter dryers installed on the unit and replace with a new one! YES! Braze in new ones! Pull a triple vacume on this sytem down to 500 microns to insure all non-condensables are evacuated from the system. Weight the charge of refrigerant back in and set by superheat readings from the evaporator coil to the compressor! majic number is 40f evap outlet plus 12f to make it around 52-55 at the compressor inlet. Your problem has been restrictions in the refrigeration cycle either in capillary tube with orfice for metering device or a TXV getting cloged with ****! Hope this gets it solved for you!