The answer to 'boiler short cycling' is that it is a common issue where the boiler turns on and off rapidly, often due to an underlying problem. This can be caused by a variety of issues, such as a faulty thermostat, low water pressure, or a problem with the boiler's controls.
Some common symptoms of boiler short cycling include the boiler turning on and off frequently, inconsistent heating, and higher energy bills. It's important to address the root cause of the issue to prevent further damage and improve the boiler's efficiency.