The answer to 'why is my ductless system short cycling' is that there are several common causes, including a refrigerant leak, a malfunctioning thermostat, a blocked air filter, or a problem with the compressor. Short cycling occurs when the system turns on and off rapidly, which can lead to inefficient operation and increased wear and tear on the components.
Short cycling can be caused by an issue with the thermostat, such as it being placed in a location with poor air circulation or it being set too low. A refrigerant leak can also cause the system to short cycle as it struggles to maintain the proper temperature. Additionally, a blocked air filter or a problem with the compressor can lead to short cycling. It's important to address the root cause to resolve the issue and prevent further damage to the system.