The answer to 'drain trap constantly running' is that a drain trap that is constantly running or dripping is typically caused by a problem with the plumbing system. This can be due to a clogged or malfunctioning drain trap, a leak in the trap or connected pipes, or an issue with the water supply.
Some common symptoms of a constantly running drain trap include a steady drip or flow of water, unusual gurgling sounds, and water pooling around the drain or trap. Potential solutions depend on the underlying cause, but may include cleaning or adjusting the drain trap, replacing worn washers or gaskets, or repairing any leaks in the piping.