The answer to 'faucet no hot water' is that the most common causes are a malfunctioning water heater, a clogged or faulty hot water supply line, or a problem with the faucet itself. Symptoms may include only cold water coming out of the hot water tap, or the hot water taking a long time to heat up.
Some potential solutions include checking the water heater thermostat and heating element, inspecting the hot water supply line for clogs or leaks, and disassembling the faucet to clean or replace any worn parts. However, if the issue is with the water heater or requires more complex faucet repair, it's best to call a professional plumber to diagnose and fix the problem.