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General| Brand | A. O. Smith |
|---|---|
| Model | 310 |
| Category | Water Heater |
| Fuel Type | Electric |
| Energy Factor | 0.95 |
Guidelines for proper installation according to codes and standards.
Describes the sequence of events when the water heater starts.
Explains how the unit modulates gas and fan speed during use.
Details the process the heater follows when turned off or flow stops.
Basic checks to perform before proceeding to other troubleshooting sections.
Troubleshooting steps for when the water temperature is insufficient.
Troubleshooting steps for when the water temperature is too high.
Diagnosing and resolving fluctuating water temperatures.
Steps to take when the unit fails to ignite.
Steps for when the unit has utilities but won't start.
Resolving error code 031 related to dipswitch settings.
Troubleshooting steps for ignition failure error code 111.
Addresses error code 121 when flames are lost during operation.
Steps for resolving a computer board fault (error code 701).
How to check and verify dipswitch settings for correct operation.
Instructions for draining the unit and cleaning the filter.
Procedures for checking gas supply, purging air, and manifold pressure.
How to reset the computer board and check the overheat cutoff fuse.
Steps for cleaning the rod assembly components.
Procedures for cleaning burner, fan, heat exchanger, and sensors.
Detailed steps for removing and replacing the heat exchanger.
Procedures for testing and cleaning the flow sensor.
Steps for circulating descaling solution through the unit.
