The reset button on an AO Smith water heater is typically located on the upper thermostat, behind the access panel, often marked with a red button.
Finding the reset button on your AO Smith water heater is crucial for troubleshooting common issues. The location varies between gas and electric models, but it’s typically found near the thermostat or control panel. This guide provides detailed instructions to locate and use the reset button safely.
Reset Button Location on AO Smith Water Heaters
The reset button serves as a safety feature that restarts the unit when it encounters operational issues. Its position depends on whether you have a gas or electric model.
Gas Water Heaters
For gas models, follow these steps:
- Locate the lower access panel near the bottom of the unit
- Remove the panel using a screwdriver
- Look for the thermostat housing
- Find the small red or black button labeled “Reset”
The reset button is typically adjacent to the thermostat and gas control valve. It may be part of the thermal switch assembly.
Electric Water Heaters
Electric models have the reset button in a different location:
- Turn off power at the circuit breaker
- Remove the upper access panel
- Pull back insulation to expose the thermostat
- Locate the red reset button near the thermostat
When to Use the Reset Button
The reset button activates when the water heater detects potentially dangerous conditions. Common scenarios include:
- Water temperature exceeding safe limits
- Pilot light failure in gas models
- Electrical faults in electric models
- Thermal switch tripping due to ventilation issues
Troubleshooting Steps
Before resetting, check these potential issues:
Gas Models
- Ensure proper gas supply
- Check pilot light status
- Inspect ventilation system
Electric Models
- Verify power supply
- Check circuit breakers
- Inspect heating elements
How to Properly Reset Your Water Heater
Follow these steps for a safe reset:
- Turn off power/gas supply
- Wait 30 seconds
- Press the reset button firmly
- Restore power/gas
- Monitor operation
If the unit continues to trip, consult a professional. Frequent resets indicate underlying problems that require specialized tools and expertise.
Safety Precautions
Always prioritize safety when working with water heaters:
| Precaution | Reason |
|---|---|
| Turn off power/gas | Prevents electrical shock or gas leaks |
| Wear protective gear | Protects from hot surfaces |
| Check for leaks | Prevents water or gas damage |
Common Issues After Resetting
If problems persist after resetting, consider these potential causes:
Gas Models
- Clogged air filter or flame arrestor
- Faulty thermocouple
- Ventilation problems
Electric Models
- Failed heating element
- Faulty thermostat
- Wiring issues
For complex issues, refer to the AO Smith support page or contact a certified technician.
Maintenance Tips to Avoid Frequent Resets
Regular maintenance can prevent many reset-related issues:
- Flush the tank annually
- Inspect anode rod every 3 years
- Check pressure relief valve
- Clean air intake (gas models)
- Test thermostats periodically
Proper maintenance extends your water heater’s lifespan and improves efficiency. For more information on maintaining home heating systems, visit our residential HVAC guide.
