Home > rinnai code 10

How do I fix a Rinnai code 10?

Alton Alexander
By Alton AlexanderUpdated on June 4th, 2022

Rinnai Code 10 is an error code that indicates that the water heater is not receiving enough water. This can happen for a variety of reasons, including a clogged water line or a problem with the water pressure. If you see this error code, you should check the water line and the pressure to make sure that everything is working properly.

People like you are also looking for:

  • error code 10 rinnai
  • rinnai error code 10
  • rinnai code 10

1. Check the gas supply

To check the gas supply in order to fix rinnai code 10, turn off all the appliances in the house and wait 15 minutes. If the gas supply is not the issue, then the problem may be with the rinnai valve. To check the rinnai valve, turn on the gas and wait until the valve opens. If the valve does not open, then the valve may be defective and need to be replaced.

2. Check the power supply

  1. Check if the power is on by turning the power switch on.
  2. If the power is not on, check if the power cord is plugged in and if it is, check if the power outlet is working.
  3. If the power cord is plugged in and the outlet is working, check the power supply by turning it on and checking if the light turns on. If the light does not turn on, check the power supply by unplugging it and plugging it back in.
  4. If the power supply is not working, check if the power cord is plugged in properly and if it is, check the power outlet by plugging in another power cord. If the outlet is working and the power cord is plugged in, the power supply may be defective.

3. Check for blockages in the gas supply line

  1. Turn off all appliances in the home
  2. Make sure all the windows are closed and the doors are locked
  3. Check the filter on your rinnai code 10
  4. Turn on the gas supply to the home
  5. Wait 10 minutes and then check the filter again
  6. If the filter is still dirty, then the gas supply line may be blocked and needs to be replaced.

4. Check for blockages in the exhaust vent

There are generally four steps to check for blockages in the exhaust vent in order to fix the Rinnai code 10 issue.

  1. Remove the covers over the exhaust vents.
  2. Look for any debris or objects blocking the airflow.
  3. Inspect the exhaust vent for any cuts or tears.
  4. Clean the exhaust vent if necessary.

5. Check the flame rod

  1. Open the lid of the water tank.
  2. Check the gas flow by turning the flame rod on and off.
  3. If the flame rod does not work, turn off the gas supply at the valve in the bottom of the water tank.
  4. Check the flame rod for damage. If it is damaged, replace it.
  5. Check the flame rod connection to the gas supply.
  6. Check the flame rod connection to the water tank.
  7. Reconnect the flame rod to the gas supply and to the water tank.
  8. Turn on the gas supply.
  9. Check the flame rod for proper function.

6. Check the igniter

  1. Open the cover of the rinnai unit.
  2. Remove the igniter.
  3. Inspect the igniter for damage. If the igniter is damaged, replace it.
  4. Reinstall the igniter.

If the answers above didn't work then you should also try:

  1. Check the burner.
  2. Check the thermostat.