Frequent cycling reduces comfort and can strain the compressor.
Oversizing
If the unit's minimum output is greater than the actual load, the temperature rises quickly and the unit stops.
Low water volume
A small hydraulic circuit changes temperature too quickly.
Many closed zones
When fan coils or underfloor heating loops are closed, the active load and flow rate are reduced.
Incorrect thermostat logic
A very small hysteresis or aggressive ON/OFF control can increase the number of start-stops.
