I have a Reliance 606 hot water heater bought new in 2004 that keeps shutting off every few minutes. Never had an issue with it until last night or early this morning. The pilot light will light without a problem and when I turn the valve to "On" the burner will light but within a couple minutes it will just shut off. I can hear a click in the control box on the front of the tank when it happens. Any help would be appreciated. Thanks.
Welcome to Terry's Forum.
Have you tried to operate the Gas Valve in the A,B,or C setting ? Not just On, or Vacation.
Diagnostic Flashes:
If the water heater is not working, look for the following
diagnostic flashes after lighting the pilot. For more details, see
“Status Light and Diagnostic Code Troubleshooting Chart.”
2 Flashes Indicates Thermopile Voltage Low
4 Flashes Indicates Overheat Failure
5 Flashes Indicates Sensor Failure
7 Flashes Indicates Electronic Control Failure
8 Flashes See “Status Light and Diagnostic Code Troubleshooting Chart.”
Good Luck on your project.