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How to fix Noritz error code 71?

Alton Alexander
By Alton AlexanderUpdated on June 4th, 2022

The Noritz Error Code 71 indicates that the water heater is not receiving power. This can be caused by a number of things, including a tripped circuit breaker, a faulty power cord, or a problem with the electrical outlet. If the problem is with the power cord, you will need to replace it. If the problem is with the electrical outlet, you will need to have an electrician check it out.

1. Check the gas line for any blockages

  1. Make sure all the appliances in the home are turned off.
  2. Turn off the gas to the home using the service shut-off valve.
  3. Inspect the gas line for any blockages.
  4. If there are any blockages, remove them using a plunger or a pipe cleaner.
  5. Turn on the gas to the home and wait for the gas meter to reset.
  6. Check the gas line for any further blockages and fix them as needed.

2. Check the igniter for any dirt or debris

  1. Verify that the engine is running
  2. Remove the spark plug
  3. Inspect the electrode for any dirt or debris
  4. Replace the spark plug
  5. Verify that the engine is running

3. Clean the burner head

  1. Turn off the gas and electric to the stovetop
  2. Remove the burner head by unscrewing the knob on top
  3. Clean the burner head using a cloth or a kitchen sponge
  4. Reattach the burner head by screwing the knob on top

4. Replace the gas control valve

1.Remove the screws that hold the gas control valve in place. 2.Remove the gas control valve from the furnace. 3.Remove the old gas control valve from the furnace. 4.Clean the area around the new gas control valve with a degreaser. 5.Apply a thin layer of sealant to the threads of the new gas control valve. 6.Install the new gas control valve in the furnace. 7.Replace the screws that hold the gas control valve in place.

5. Replace the igniter

  1. Turn off the stovetop by unplugging the power cord from the outlet.
  2. Remove the two screws on the back of the stove.
  3. Lift up the cover and remove the two screws that secure the igniter in place.
  4. Unplug the igniter cord from the control panel.
  5. remove the igniter.
  6. Clean the contacts on the igniter with a cotton swab dipped in rubbing alcohol.
  7. Install the new igniter by reversing the steps above.
  8. Replace the screws on the back of the stove.
  9. Plug in the igniter cord and reattach the control panel screws.

6. Replace the burner head

  1. Remove the front panel of the stove.
  2. Remove the six screws that secure the burner head to the stove top.
  3. Lift the burner head off of the stove top.
  4. Replace the burner head with a new one.
  5. Secure the burner head to the stove top with the six screws.