A.O. Smith Voltex Hybrid Electric PHPT-80 User Manual (English)

Questions and Answers:

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Daniel WilliamsJul 30, 2025
Why is there no hot water from my A.O. Smith Voltex Hybrid Electric PHPT-80 Water Heater?
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  dennisholmesJul 30, 2025
  If your A.O. Smith Water Heater isn't producing any hot water, start by checking for a blown fuse or tripped breaker. Restore power, then press the power button. Also, ensure the unit isn't in standby mode by pressing the power button or in Vacation mode by selecting a different mode. If these steps don't resolve the issue, the high-temperature limit switch may be open, requiring a reset. In some cases, the hot water usage exceeds the capability of the water heater in the current mode, so consider changing to a different mode or modifying usage patterns. If the upper temperature sensor is non-functioning, it's best to contact a qualified service person.
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Gregory GrantAug 5, 2025
Why is my A.O. Smith Water Heater providing insufficient hot water?
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  Brent GilesAug 5, 2025
  If you're experiencing insufficient hot water or slow recovery with your A.O. Smith Water Heater, several factors could be at play. Start by checking if the temperature set-point is too low and increase it if necessary. A dirty air filter can also cause this issue, so ensure you clean it. Your hot water usage might exceed the heater's current mode capability, so consider switching modes or adjusting your usage. Also, verify that the water connections aren't reversed—cold should connect at the bottom and hot at the top. Insulate any exposed piping to prevent heat loss, repair any hot water leaks, and drain and flush the tank to remove sediment or scale buildup. If the heating element is non-functioning, you should contact a qualified person for service.
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Kevin HillAug 10, 2025
What to do if my A.O. Smith Water Heater is dripping from the temperature & pressure relief valve?
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  Alejandro NunezAug 10, 2025
  A drip from the Temperature & Pressure Relief Valve on your A.O. Smith Water Heater could indicate excessive water pressure. Check the water supply inlet pressure; if it exceeds 80 PSIG, install a pressure reducing valve. The issue may also be related to the thermal expansion, consider adding or servicing a thermal expansion tank. If the Temperature & Pressure Relief Valve is non-functioning, it should be replaced.
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Justin ThompsonAug 17, 2025
Why does my A.O. Smith Water Heater not immediately start?
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  Sandra HornAug 17, 2025
  When first started, the A.O. Smith water heater takes about 8 minutes to complete a diagnostic routine.
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Isaac CalhounAug 22, 2025
Why are the operation costs so high for my A.O. Smith Water Heater?
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  Brian KiddAug 22, 2025
  High operation costs for your A.O. Smith Water Heater can stem from several factors. A primary cause could be a temperature set-point that's too high; decreasing it may help. Other causes include a dirty air filter (clean it), using Electric mode (switch to Efficiency or Hybrid), reversed water connections (ensure cold is at the bottom and hot at the top), heat loss through exposed pipes (insulate them), hot water leaks (repair them), and sediment or scale buildup (drain and flush the tank; water conditioning may be needed).