Water Heaters - Recent Questions, Troubleshooting & Support

There cannot be controlled venting of the flue , the products of combustion must have free flow to escape , The heat exchanger is above the burner which heats the water if you thinks this is high then maybe you a pressure problem . Or contact the makes tech line and ask them what they think the consumption might be for you heater .You may find this on google

RTO W4 A.O Smith... | Answered 2 days ago

it is probably the thermostat since that would control the temperature and keep it from overheating there is a different control that shuts it down called the "over temperature sensor" it is obviously doing it's job if the water heater is old it could have calcium on the probe for the thermostat which would insulate it and cause the temperature to be inaccurate I think if it were me I would just replace the thermostat since by now it may be damaged from the overheating

Water Heaters | Answered 3 days ago

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