American Hometec AHG-T42-NG User Manual (English)

Questions and Answers:

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April BeltranAug 8, 2025
What to do if there is no hot water from my American Hometec Water Heater?
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  adam86Aug 8, 2025
  If your American Hometec Water Heater isn't producing hot water when you open a hot water faucet, the possible causes include a closed water valve, empty fuel source, or a power outage. Low water flow (less than 0.66 gpm) or freezing temperatures can also be culprits. The solutions are to ensure the fuel gas valve is open, refill the source tank if applicable, open the water inlet valve, and ensure the unit has 120V power. Increase the hot water flow to enable the system. If frozen, consult the manual section 'No Flow Due to Expected Frozen Heater' to thaw the unit. Allow time for hot water to travel through the system.
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Sergio TuckerAug 12, 2025
Why is the hot water from my American Hometec Water Heater too hot or too cold?
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  Paul BakerAug 12, 2025
  If the hot water from your American Hometec Water Heater is not the correct temperature, it might be due to a reset temperature setting from a power outage, an incorrect temperature set point, flow exceeding capacity, or incoming water being too warm. To fix this, re-enter custom set points after a power outage. If a remote wired controller is in use, release its override control or adjust the set point. Reduce water flow if it exceeds the unit's capacity. If incoming water is too warm, increase the hot water flow so the burner system can control the temperature.
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Mr. Thomas RothAug 16, 2025
How to troubleshoot a power indicator lamp that is not lit on my American Hometec Water Heater?
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  Brandon CampbellAug 16, 2025
  If the power indicator lamp on your American Hometec Water Heater is not lit, it means there is no power. This could be due to a power outage or the unit being unplugged. When power is restored, the unit should work. Check the circuit breaker and reset it if needed, and check the ground fault circuit interrupter (GFCI) and reset if necessary. Also, check the power plug to ensure it is properly plugged in.
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Danielle LucasAug 21, 2025
Why is the hot water flow lower than expected from my American Hometec AHG-T42-NG Water Heater?
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  Jake WilliamsAug 21, 2025
  If your American Hometec Water Heater produces lower than expected hot water flow, the water source might be restricted, the heat exchanger could be scaled, or the incoming water temperature might be colder than expected. Check and fully open the water inlet valve(s), inspect and clean the inlet water screen, and clean the heat exchanger by flushing it according to the maintenance procedure. Reduce user flow to operate within the heater's capacity if the incoming supply water is colder than normal.
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Shannon RodgersAug 26, 2025
What to do if my American Hometec Water Heater is leaking from the safety valve outlet?
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  Cheryl SimpsonAug 26, 2025
  If water is leaking from the safety valve outlet of your American Hometec Water Heater, it's because the water system is operating above the design pressure or the safety valve is damaged. It is recommended to consult a professional for a system review and replace the safety valve.
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Helen WhiteheadAug 29, 2025
How to check the vent system on my American Hometec AHG-T42-NG?
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  Sarah RosalesAug 29, 2025
  If you suspect vent system trouble with your American Hometec Water Heater, it is likely that the vent system is restricted. Check the air intake and exhaust ducts to ensure they are not damaged, corroded, or blocked.
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Tracie WadeSep 3, 2025
Why doesn't the volume alarm sound on my American Hometec AHG-T42-NG Water Heater?
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  David PriceSep 3, 2025
  If the volume alarm on your American Hometec Water Heater does not sound even when the volume appears adequate, the units might be incorrect during input or measuring flow of only hot water instead of hot and cold water combined. Refer to the 'H2O SAVER TECHNOLOGY™ - Set a Desired Volume' section to ensure units (metric vs. English) and volume (displayed volume number represents 1/10th of the actual total flow) are correctly set. The volume measurement only tracks water passing through the heater; if hot water mixes with cold water before dispensing, the volume won't represent the total amount.