I can't address specifically as to if your units can or cannot be recharged; but many years ago I had an old refrigerator that did not have a port to recharge. The old maintenance guy I called told me that there was a clamp on device which went over the suction or low pressure side that had a tip on it to screw on the line for the freon bottle. That was 30 years ago and I don't know if that is still an option or not. Good Luck!
Duo Therm Heat Pump Repair Problems
in artbalog's Blog
A blog by artbalog@aol.com
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I can't address specifically as to if your units can or cannot be recharged; but many years ago I had an old refrigerator that did not have a port to recharge. The old maintenance guy I called told me that there was a clamp on device which went over the suction or low pressure side that had a tip on it to screw on the line for the freon bottle. That was 30 years ago and I don't know if that is still an option or not. Good Luck!