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How do I fix Navien e110 error code?

Alton Alexander
By Alton AlexanderUpdated on September 6th, 2022

The navien e110 code is an error code that indicates a problem with the water heater. This error code can happen for a variety of reasons, but usually it is caused by a problem with the water heater itself. Sometimes the problem is with the way the water heater is installed, or with the way the water heater is being used. If the navien e110 code appears, it is important to troubleshoot the problem so that the water heater can be fixed or replaced.

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1. Check the water pressure

  1. Turn off the water supply to the house
  2. Remove the water line to the house from the main supply
  3. Check the water pressure at the main supply with a pressure gauge
  4. If the pressure is low, replace the water line to the house from the main supply.
  5. Check the water pressure at each water line inside the house with a pressure gauge
  6. If the pressure is low at any of the water lines, replace the water line.

2. Check the water temperature

  1. Press and hold the water temperature button on the refrigerator for 3 seconds.
  2. Release the button and wait for the temperature reading to appear on the display.
  3. If the temperature is too low, the navien e110 code will display and the refrigerator will not operate. If the temperature is too high, the code will not appear and the refrigerator will operate.
  4. To fix the navien e110 code, adjust the temperature by pressing the temperature up or down buttons until the desired reading appears on the display.

3. Check the gas pressure

If you are experiencing a navien e110 code, and you believe the gas pressure is not correct, there are several steps you can take to determine the issue. First, you will need to check the gauge. If the gauge is not reading correctly, then you will need to adjust the gas regulator. If the gauge still does not read correctly, then you will need to replace the gas valve.

4. Check for blockages in the vent line

  1. Remove the covers over the air conditioner's evaporator coils.
  2. Look for blockages in the vent line.
  3. Clear any blockages with a vacuum cleaner.
  4. Reinstall the covers and check for proper operation.

Still not working? maybe try one of these options:

  1. Check the igniter.
  2. Check the flame rod.
  3. Check the burner.
  4. Check the heat exchanger.
  5. Call a service technician.