According to frigid aired error code table it is regarding a Mode Conflict Error, but without your exact model number, I can't clarify this any further except to say that you have one of the heads in heating mode & the other head is in cooling mode which creates the mode conflict squalling the E7 Error Code, I do hope this helps... But please comment further if I can assist you in any way I will happily do so....
SOURCE: Water leakage from internal unit of split AC
Draim pans do get dirty and partialy block drain pan. If possible take a shop vac and gently **** out the drain line. This will pull the restriction out of the line and help clean drain pan. Rusty
SOURCE: hello im trying to trouble shoot two split systems
E7 indicates an "External Feedback Problem" which sounds like a communication problem. I believe there is a sensor cable that runs from the outdoor unit to the indoor unit also. Check that all cables are properly run to the appropriate unit and check all connections for tightness. Here is the link to a manual that includes installation and wiring instructions.
http://www.acwholesalers.com/EasyEditor/assets/amcor%20duo%20uchw-h12%20owners%20manual.pdf
SOURCE: Hi I have 1.5 ton samsung split AC. the problem is...
the water comes from the coil, start there make sure there is no obstruction coming out to your condensate line and make sure its properly pitched.
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