Rinnai error code 11 is a code that indicates a problem with the gas supply to the appliance. This can happen if the gas supply is turned off or if there is a blockage in the gas line.
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- rinnai error code 11 fix
 - rinnai error code 11
 
1. Check the gas line for leaks
- Remove the cover over the gas line.
 - Look for any cracks or leaks in the line. If there are, fix them with a sealant.
 - Use a gas detector to check for any gas leaks. If there are any, fix them.
 
2. Check the igniter for proper operation
- Inspect the electrodes for cracks, burnt areas, or dirt. If any of these conditions exist, the igniter will need to be replaced.
 - Check the wire connections to the igniter. Make sure that the wires are secure and that there are no breaks or kinks.
 - Inspect the igniter for signs of overheating, such as melted plastic or scorching wires. If the igniter is overheating, it will need to be replaced.
 - Check the voltage at the igniter's power supply. If the voltage is low, the igniter may need to be replaced.
 
3. Check the thermocouple for proper operation
- Verify that the thermocouple cable is correctly inserted into the connector on the heat exchanger.
 - Verify that all electrical connections are secure.
 - Check the thermocouple for proper operation. If it does not appear to be reading accurately, replace the thermocouple.
 
If you didn't find success with an option above, then try:
- Check the gas control valve for proper operation.
 - Clean the burner assembly.
 - Inspect the flue for blockages.
 - Check for proper ventilation.
 - Have the unit serviced by a qualified technician.
 
