Ao Smith Error Codes
Browse all Ao Smith error code pages for BC Wide.
- A. O. Smith Water Heater Error Code 01: Ignition Failure
- A. O. Smith Water Heater Error Code 02: Flame Signal Lost
- A. O. Smith Water Heater Error Code 03: High Limit / ECO Triggered
- A. O. Smith Water Heater Error Code 04: Gas Valve Circuit Fault
- A. O. Smith Water Heater Error Code 05: Blower / Fan Error
- A. O. Smith Water Heater Error Code 06: Pressure Switch Error
- A. O. Smith Water Heater Error Code 07: Control Module Failure
- A. O. Smith Water Heater Error Code 08: Temperature Sensor Fault
- A. O. Smith Water Heater Error Code 09: System Lockout
- A. O. Smith Water Heater Error Code 10: ECO Circuit Open
- Repair Guides:
- How We Fix A. O. Smith Error Code 01: Ignition Failure
- How We Fix A. O. Smith Error Code 02: Flame Signal Lost
- How We Fix A. O. Smith Error Code 03: High Limit / ECO Triggered
- How We Fix A. O. Smith Error Code 04: Gas Valve Circuit Fault
- How We Fix A. O. Smith Error Code 05: Blower / Fan Error
- How We Fix A. O. Smith Error Code 06: Pressure Switch Error
- How We Fix A. O. Smith Error Code 07: Control Module Failure
- How We Fix A. O. Smith Error Code 08: Temperature Sensor Fault
- How We Fix A. O. Smith Error Code 09: System Lockout
- How We Fix A. O. Smith Error Code 10: ECO Circuit Open
Safety Reminder
If you smell gas, suspect carbon monoxide or believe there is an immediate danger, leave the property and contact emergency services or the appropriate gas emergency authority. Do not remain inside — exit the building immediately and call for help from outside.