A.O. Smith T-H3S-DV User Manual (English)

Questions and Answers:

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Brian BrownAug 5, 2025
Why is there no hot water when I open a fixture with my A.O. Smith T-H3S-DV?
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  qgilbertAug 5, 2025
  If hot water isn't available when you open a fixture with your A.O. Smith Water Heater, ensure the unit has a 120 VAC, 60 Hz power supply. If you're using a remote or temperature controller, check if it's powered on. Also, verify that both the gas and water supply valves are fully open. Check if the filter on the cold water inlet is clean and ensure the hot water fixture is open enough to draw at least 0.5 GPM through the heater. Finally, check that the unit isn't frozen and, for propane models, that there is enough gas in the tank or cylinder.
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Joshua LawrenceAug 9, 2025
Why is my A.O. Smith Water Heater water not hot enough?
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  Donald DelgadoAug 9, 2025
  If the water from your A.O. Smith Water Heater isn't hot enough, start by checking for cross plumbing between cold and hot water lines. Ensure the gas supply valve is fully open and that the gas line is properly sized. Also, confirm that the gas supply pressure is sufficient and that the set temperature isn't too low.
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Leslie MillsAug 14, 2025
Why is the hot water temperature fluctuating in my A.O. Smith T-H3S-DV?
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  kimberlyfarrellAug 15, 2025
  If you're experiencing temperature fluctuations with your A.O. Smith Water Heater, start by checking if the filter on the cold water inlet is clean. Verify that the gas line is properly sized and the supply gas pressure is sufficient. Also, check for cross connections between the cold and hot water lines.
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Kimberly KrauseAug 20, 2025
What to do if A.O. Smith Water Heater water is too hot?
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  Timothy FosterAug 20, 2025
  If the water from your A.O. Smith Water Heater is too hot, check if the set temperature is set too high.
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matthew93Aug 25, 2025
What to do if hot water turns cold and stays cold with A.O. Smith T-H3S-DV Water Heater?
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  Teresa WilsonAug 25, 2025
  If the hot water from your A.O. Smith Water Heater turns cold and stays cold, check if the flow rate is sufficient to keep the water heater running. If a recirculation system is installed, ensure the recirculation line has enough check valves. Also, verify the gas supply valve is fully open and the filter on the cold water inlet is clean. Make sure your fixtures are free of debris and obstructions and check if the flow rate is too low.
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Kelly GentryAug 29, 2025
How to get hot water faster from my A.O. Smith T-H3S-DV Water Heater?
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  Frederick PrattAug 29, 2025
  The time it takes to get hot water from your A.O. Smith Water Heater depends on the length of piping between the heater and the fixtures. The longer the distance or the bigger the pipes, the longer it will take. If you want hot water faster, consider a hot water recirculation system.