AO Smith tankless water heater error codes Canada.

 AO Smith tankless water heaters use flashing lights to indicate error codes, often related to ignition issues or gas supply problems. 

For example, if the status light flashes once every three seconds, it indicates that the pilot light is lit and the gas control valve is working correctly, but the water may take a while to heat up. A flashing light could also indicate an ignition failure.

  Here's a general overview of potential issues and solutions: Ignition Failure:

 This can be indicated by an error code like 111. 

Check the gas supply and inlet gas pressure, the hi-limit switch, wire connections, and the flame rod for soot.

No Hot Water: This could be due to a system overload or a problem with the gas supply.

  Inconsistent Water Temperature: This can be caused by mineral buildup or other issues with the water heater.

Resetting the System: If you're having issues, you may need to reset the system by turning off the power and water supply, then turning them back on.

Checking the Power Supply: 

Make sure the water heater has a stable power supply. 

Inspecting for Leaks: Check for any leaks around the water heater and address them.

Cleaning the System: Periodically clean the water heater to prevent mineral buildup and other issues.