The answer to 'pressure regulator not working' is that the most common causes are a faulty regulator, high water pressure, or a blockage in the system. Symptoms include low water pressure, banging pipes, and leaks. Solutions may involve adjusting or replacing the pressure regulator, installing a new one, or clearing any blockages.
If the pressure regulator is not functioning properly, it's important to diagnose and address the issue promptly. While some basic troubleshooting and adjustment can be done DIY, it's often best to call a professional plumber, especially if the problem persists or the cause is unclear. A plumber can properly assess the system, identify the root cause, and make the necessary repairs to restore proper water pressure and prevent further damage.