To Next PageTo Next PageHow to increase hot water on A.O. Smith Vortex FPTU-80?
If you're experiencing insufficient hot water or slow hot water recovery with your A.O. Smith Water Heater, try increasing the temperature set point. Refer to the 'Adjusting the Temperature' section on page 16 of your manual.
Why is A.O. Smith Water Heater temperature too high?
If the water temperature from your A.O. Smith Water Heater is too high, it may be due to a non-functioning thermostat, a grounded/shorted heating element, or a faulty thermostatic mixing valve. For a non functioning thermostat, replace the ECO (page 30). For a grounded/shorted heating element, replace the heating element (page 29). For a faulty thermostatic mixing valve, check hot water at other faucets.
Why does my A.O. Smith Vortex FPTU-80 smell bad?
If the water from your A.O. Smith Water Heater smells bad, it might be due to a concentration of sulfate in the supply water, little or no dissolved oxygen in the water, sulfate reducing bacteria, or an excess of active hydrogen in the tank. Contact a qualified person for replacement of anode.
General| Brand | A.O. Smith |
|---|---|
| Model | Vortex FPTU-80 |
| Category | Water Heater |
| Language | English |
Defines DANGER, WARNING, CAUTION, NOTICE symbols and their meanings.
Section for user to record purchase details and maintenance performed.
Details electric shock and lifting risks associated with installation and maintenance.
Explains scalding risks from hot water and burn times at different temperatures.
Covers risks from water contamination, fire, and tank explosion.
Warns about hydrogen gas buildup and explosion risk after periods of non-use.
Emphasizes reviewing instructions and checking local codes before starting.
Lists necessary tools, supplies, and optional accessories for installation.
Checks water pressure and thermal expansion tank requirements.
Ensures proper location, drain pan, and temperature regulation.
Covers space, floor, earthquakes, damage, enclosures, clearances, corrosive elements, ambient temperature.
Provides detailed steps for safely disconnecting and removing the old unit.
Covers physical placement, drain pan, and initial setup warnings.
Details wiring and connection for optional condensate pump overflow shut-off.
Explains how to connect condensate drain lines to a drain or pump.
Covers proper installation of the temperature and pressure relief valve and its discharge pipe.
Guides on installing shutoff valves and thermostatic mixing valves.
Details connecting hot and cold water supply lines and pipe types.
Instructions for checking connections and filling the tank to remove air.
Covers electrical requirements, wiring, grounding, and safety precautions.
Lists common display codes for unit status, heat pump, elements, and sensors.
Lists further diagnostic codes for power, discharge temp, pump, EEPROM, and compressor.
Diagnosing electrical issues causing no hot water.
Procedure for checking and resetting the Energy Cut Off button.
Addresses causes of T&P valve drips, like high pressure or expansion tank issues.
Explains causes of water odor and potential solutions like anode replacement.
Explains common sounds like expansion, sediment, or compressor noise.
Addresses issues of temperature too high, low water pressure, and insufficient hot water.
Covers issues like undersized heaters, reversed connections, plumbing leaks, and element failures.
Explains the benefits of routine tasks and initial schedule after six months.
Step-by-step guide for draining, flushing, and sediment removal.
Details anode rod inspection, replacement, and consumables.
Instructions for replacing heating elements and the Energy Cut-Off switch.
Covers T&P valve operation, inspection, and air filter cleaning/replacement.
Guide for cleaning the condensate drain pan and lines.
Lists and illustrates major repairable components of the water heater.
Provides details on how and what information is needed to order replacement parts.
