State select water heater troubleshooting
We have a State Select instant water heater that is about 3 years old. It serves a single small sink in a room that is rarely used. Tonight it started to leak. I unplugged it, shut off the water at the isolation valve and opened the drain valve. Less than 1/2-cup of milky-looking water came out. In cracking the isolation valve a corresponding flow came out of the drain valve. Anyone have any ideas about the probable source of the leak? The top and sides of the heater unit are dry as are the hoses connecting to the faucet.
Trickmaker