Rheem fault code 11 – No ignition. Check to make sure there is gas to the unit and that the pressure is correct. Ensure the ignitor is operational before calling for service. Rheem fault code 16 – This is an over temperature warning which could indicate a possible clogged heat exchanger.

What does code 11 mean on a tankless water heater?

An error code 11 on a Rinnai tankless water heater can appear due to an issue with the ignitor, gas supply, flame rod, venting, excess moisture, and more. Finding the exact cause is important to apply the right solution and get your water heater running again.

How do you reset the code on a Rheem tankless water heater? Unplug the water heater from power, wait about 30 seconds and plug it back in. Flush tankless to remove buildup. Close all hot water taps to reset unit. Turn off, or remove circulation pumps (unit is not designed for continuous operation with circulation systems).

How do I fix noritz Error 11?

  1. Find the gas valve connected to the Noritz water heater and turn the gas valve counterclockwise until it no longer turns to open it completely.
  2. Turn the power off to the unit by pressing the “Power” button. …
  3. Turn the hot water back off.

Why is my Rinnai beeping 11?

Rinnai error code 11 is an indication that there is no ignition in, or no gas supply to your hot water system. You can try the following to fix the problem: Check your hot water system for any visible damage or loose parts. Locate your gas supply and ensure it is turned on.

How long do tankless water heaters last?

Most tankless water heaters have a life expectancy of more than 20 years. They also have easily replaceable parts that extend their life by many more years. In contrast, storage water heaters last 10–15 years.

What is code 13 on a Rheem tankless water heater?

Flame Rod: Poor or Improper Combustion An Error Code 13 will only display on Indoor Rheem Tankless systems. Check that the air intake and exhaust venting is correctly installed and in good working order. It’s critical that the exhaust is NOT recirculating into the unit’s fresh air intake.

Where is the reset button on a tankless water heater?

The red button on the water heater is where the reset button is located. There are two buttons for each thermostat in some water heaters. The metal plate that holds the thermostat in place may have to be removed to access the reset button.

Why does my Rheem water heater keep shutting off?

If your power vent water heater keeps shutting off, the thermocouple could be damaged, dirty or bent. Inspect the thermocouple. If it is damaged, replace it. If dirty, let it down for cooling and then clean.

What is code 11 on a Rinnai?

Rinnai fault code 11 – No ignition. Check to make sure the gas is turned on at the water heater, gas meter or tank. Ensure the igniter is operational. If gas is being supplied to the tankless water heater and the igniter is working, call for an evaluation by a qualified plumber.

Why does my Noritz tankless water heater keeps shutting off?

Most are caused by either: mineral deposits incorrect installation (usually improperly installed vents) blocked air supply or exhaust vent inadequate size of unit minimum flow rate set too high or too low lack of gas or electricity water pressure too high or too low misconception of how tankless water…

How do I fix noritz Error Code 71?

Solution: The error code 71 happens if the water heater is connected to the battery backup, solar power, or generator and if there is a fluctuation in voltage supply. Check the voltage from the circuit board due to the damage.

How do I fix my Rinnai Code 12?

  1. Check gas is turned on at the gas metre or cylinder.
  2. Check gas is turned on at the water heater.
  3. Check there are no obstructions to the flue outlet.

How do you clear a Rinnai code?

After flushing water heater, the procedure to reset LC codes: Push the two switches (A and B) on PC Board at the same time for five seconds. Water heater will return to normal operation and LC# count returns to 0. This hard reset procedure is not in owners/installation manual or tech sheet.

How do you troubleshoot a Rinnai tankless water heater?

How to Fix: Confirm no loose, damaged, or broken connections on the leak detector. Check heat exchanger and all piping for leaks. If no leaks found, wipe out any water inside cabinet, dry off leak sensor, and restart unit. If error code reappears, unplug sensor and fire up the water heater.