A.O. Smith Error Code E06: Flammable Vapor Detection
Warning: The water heater has detected flammable vapors, indicating a potential fire or explosion hazard. Shut down the unit immediately and evacuate the area.
How to Fix A.O. Smith Code E06
- Step 1: Immediately shut off the gas supply to the water heater at the manual shut-off valve.
- Step 2: Evacuate the area and ensure everyone is a safe distance away from the water heater.
- Step 3: Do not attempt to operate any electrical switches or devices, as this could create a spark.
- Step 4: Contact your local fire department or a qualified HVAC technician or gas company from a safe location to investigate the source of the flammable vapors.
How to Reset A.O. Smith Code E06
- Turn off the unit using the power button on the front panel.
- Turn off the gas supply valve.
- Turn off the circuit breaker supplying power to the unit. Wait 30 seconds.
- Restore power at the breaker, then open the gas valve.
- Turn the unit back on. If the error returns, the underlying issue needs repair.
What does E06 mean?
The E06 error code on your A.O. Smith water heater indicates that the unit's flammable vapor sensor has detected the presence of potentially explosive gases. This is a serious safety concern. The water heater is designed to shut down automatically to prevent ignition of these vapors. This sensor is located near the base of the unit to detect heavier-than-air gases like propane or natural gas. It's important to address this issue immediately to prevent a fire or explosion. The unit will remain locked out until the issue is resolved and the system is reset.
Affected Models
Replacement Parts
| Part | OEM Number | Est. Cost |
|---|---|---|
| Flammable Vapor Sensor | 9007618005 | — |
| Gas Control Valve | — | — |
| Electronic Control Board | — | — |