Rodney for Model Number FRA105CT13 I am a 7 year owner of this Frigidaire FRA105CT13 10,000 btu room window a/c unit, bought new. I have had a problem (increasingly over the past year) with the a/c unit compressor not running consistently, after setting the temperature for COOLING. As a result the unit never reaches the set cooling temp., Just compressor cycles of various duration over and over, until COOLING setting is turned off (with fan running) , or unit is shut down. EXAMPLE: After a period of being turned off, or running just the fan, when set to COOLING ranges, the unit will run normally (with compressor running) for 15-30 min., and then the compressor will shut of and begin to short cycle arbitrarily, It will do this, at irregular intervals. Seemingly, my symptoms I.D. for this problem, after a L_O_N_G time of research, ownership, and experience with window a/c units are these (with history/backstory) are these: unit has had the evap coil defrost thermistor probe replaced new; unit has had pc control board replaced new.The only other culprits I can diagnose are the ambient indoor temp thermistor/sensor, and/or the compressor start/run capacitor. At certain times, the compressor will run for extended times as normal. This 'normal running' is only at arbitrary times, and usually at higher outdoor temperatures approx. above 70-75 degrees, and thus indoor temps of 75-80 degrees, or more. QUESTION: would either of the above mentioned parts cause this behavior, and would installing them correct this puzzling situation. ALSO OF NOTE: there is a small to moderate amount of frost or ice which develops on the evaporator indoor coils and/or fins, but not regularly, and very arbitrarily. Frigidaire/Electrolux lists, and identifies the evap coil thermistor/sensor probe as a DEFROST thermistor, so I am assuming that SOME frosting may be normal under certain 'intermediate' ambient temp and humidity conditions. Otherwise the unit may have a sealed system/freon refrigerant oil issue. As the original owner, I doubt this, because when running normally, even after this annoying, and potentially energy and hardware- costly problem, there are times when the unit produces freezing cold air, pleasurable air, but it doesn't last. Your expert help is needed please!. Thanks In Advance.
Answer Rodney, The most likely cause for this issue will be the sensor on the evaporator but you will also want to make sure that the evaporator coils and the filter are clean which could also cause this. Read More... Answered by AppliancePartsPros.com | Monday, June 12, 2017