who do you call if your water heater pilot light does not stay lit?
The thermocouple is the copper piece going from the gas valve to the burners under the hot water heater. If the connection at the thermostat is loose, tighten with a wrench. Turn the gas valve back on to the pilot position and light your pilot light as normal. If it stays lit, the loose connection was the issue.If the pilot does not stay lit, you will need to test the thermocouple. Disconnect the thermocouple from the thermostat gas valve with a wrench.ight the pilot light per the instructions for your water heater and watch the voltage reading on your multimeter. If the reading is 12 millivolts or higher, you may need to call a technician to replace the gas valve. If you do not get 12 millivolts, you should replace the thermocouple.