Problem: Air conditioner or heat pump compressor will not start. I hear an “UGGG” sound for 5 to 10 seconds when the compressor tries to start then the compressor shuts off.
Solution: When power is applied to the air conditioning outdoor unit the fan starts, but you hear a sound like the compressor is trying to start, “UGGG”…, for about 5 to 10 seconds and then all you hear is the outdoor condenser fan run. The compressor is locked and will not start. What is happening is the compressor is trying to start, but because the compressor motor being locked the compressor tries to start for a few seconds, and then because of the high amperage being drawn goes off on internal overload. The internal overload protects the compressor windings from overheating and burning up. I see this many times during the start of the air conditioning season. Some compressors just have a hard time starting after sitting all winter long. Some compressors are locked up so bad that I can not start them and must tell our customers that they need a new compressor or new air conditioning system. Many times I can get the compressor started again without having to buy a new compressor or new air conditioning system by using the device that we sell called, “Super-Boost.” I keep two or three of these on the truck. The compressor hard start boosters have saved many of our customers from having to buy new air conditioning systems. Please click here if you are interested in purchasing a Compressor hard start booster. I like the SPP6 that we sell. Please click here if you would like to see the SPP6 compressor hard start booster that we sell. Compressors not being able to start can also be caused by a weak run capacitor. Please click here if you would like to see the Run Capacitors that we sell. We have same business day fast shipping! Please email us anytime if you have a questions or would like for us to look up and find out what capacitor your unit uses. Please send us your unit’s model number. Our email address is: email@example.com. We would love to help you out and have your business! Below we have a good YouTube video produced by Grayfurnaceman which talks about hard start kits and how to install a hard start kit. I recommend the SPP6 (sold below) over the SPP6E compressor hard start kits.