Why is my Rinnai flashing 11

Rinnai Gas Heater fault code 11 indicates a no ignition or no gas supply on your gas heater system. … A gas supply issue may be present if the flame on the gas heater pilot drops in pressure, of if your gas heater does not work then there is no gas supply present.

How do I reset my Rinnai Code 11?

Check your hot water system for any visible damage or loose parts.
Locate your gas supply and ensure it is turned on.
Test your gas supply by turning on a gas appliance, such as a stove-top. Ensure you turn it off after testing.

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.

What is code 11 on a tankless water heater?

Noritz Error Code 11 This indicates ignition failure in your tankless water heater. It means that your unit is not firing up to heat the water, a situation that can be caused by insufficient gas supply, insufficient airflow or debris on the ignition plug.

How do I fix my Rinnai Code 12?

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

Why is my Rinnai water heater beeping?

A water heater may sound a beep to warn that there is a water leak. Leaks may be obvious if the floor is wet near the water heater, but the leak might also be somewhere along the line. The beeping may be initiated by a water heater shutoff feature, a flood prevention device. Beeping may also signal a gas leak.

Why is my Rinnai beeping 12?

If you’re getting Rinnai error code 12 on your hot water unit, it indicates that a flame failure has occurred on the system. In this instance, your hot water unit has not recognised that there is a flame in the burner box. … Incorrect gas pressure supply your hot water unit.

How do you check a Rinnai Ignitor?

Verify igniter is working. Turn off gas valve feeding the appliance. Unplug igniter wire; hold the igniter wire with an insulated pair of pliers about a 1/4″ from a piece of metal. Cycle the unit to ensure you see a spark when unit is cycling.

What does priority mean on Rinnai tankless water heater?

When you press the “Priority button,” the green light will glow, indicating that the controller controls the temperature and that a water heater is ready. Rinnai water heaters work in the temperature range from 98 F to 140 F, while they come with the factory setting of approximately 120-125 F.

How do I reset my Rinnai Control R WIFI module?

control•r™ 2.0 – How do I factory reset the module? Press and hold the Connect button on the module until the LED blinks RED and WHITE, and then release then QUICKLY tap 3 times. This will restore the module back to original factory settings.

Article first time published on

How do you reset 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.

What is code 12 on a tankless water heater?

Error Code 12 relates to flame failure which is when the heater can’t maintain a flame. You should check that the system is receiving gas that’s the right pressure and type. Also, check for carbon buildup in the flame rod and bleed excess air from the gas lines.

How do you find the error code on a Rinnai?

You can easily find the most recent error codes if your water heater is connected to MC-91 or MCC-91. Press and hold the ON/OFF button for two seconds and press the arrow “UP,” and the last nine Rinnai error codes will appear and flash one after the other.

How do I fix noritz Error Code 12?

Error Code 12 Problem: Burner flame loss during operation; flame rod does not detect a flame. Solution: Check for the incoming gas pressure. Remove any obstructions in the venting system. Clean the ignition plug and flame rod.

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.

What maintenance is required on a tankless water heater?

Flushing the System. The hot water heater should be flushed at least once a year. …
Cleaning the Air Filter. In your tankless water heater, there is an air filter that will need to be cleaned regularly. …
Cleaning the Water Filter. …
Cleaning the Tank.

How do you clean a Rinnai gas stove?

Remove the pan support and soak them in hot soapy water for 15 minutes.
Remove burner covers and gently wipe away stain with a washcloth.
Wipe entire surface of hob with mild cleaning agents.
For stubborn stains, wipe with a bit of rubbing alcohol on a paper towel.

Does a Rinnai tankless water heater have a pilot light?

The Rinnai unit won’t operate in the event of a power failure. Rinnai Tankless Water Heaters don’t have a standing pilot light. They use an electronic ignition.

How often do I need to flush my tankless water heater?

Over time, a tankless water heater may accumulate mineral build up which can erode the walls inside your tank’s heating chamber. To properly maintain and clean your tankless water heater, it’s important to flush those mineral deposits at least once a year.

Why does my Rinnai heater keep turning off?

The main reasons that a gas water heater automatically shuts off are because the pilot light goes out, the pilot light can’t start, or there are problems with the gas supply. If your gas water heater keeps shutting off, the thermocouple could be dirty, bent or damaged.

How do you test a tankless water heater Ignitor?

Testing the igniter Turn the gas supply to the water heater off. Unplug the igniter wire. Use the insulated pliers, hold the igniter wire, and ¼” from a metal part. Run the heater.

How do I fix my Rinnai Code 14?

Thermal Fuse or Overheat An error code 14 indicates that your Rinnai is over heating. The issue could either be the bi-metal safety switch or the thermal fuses. Remove the cover and look for discoloration on the surface of the heat exchanger in the area where the combustion box meets the copper section.

Why is my heater beeping?

Any time you notice a frequent beeping noise coming from the furnace, this means something isn’t right and the system is alerting you to an issue. … Some furnaces will beep when the air filter needs to be changed. Always refer to the owner’s manual to see what a beeping sound means for your specific heating system.

Why does my water heater alarm keep going off?

Water heater and water tank failures can happen at any time, often without warning. If the leak is not immediately detected, substantial flooding and property damage can occur. … When the sensor detects leaking water, the system will automatically shut off the feed and sound an audible alarm.

Why is my hot water service beeping?

Hot Water System. … When your solar hot water unit is not operating correctly your system will sound out an audible alarm to get your attention. This beeping alarm indicates that your system is subject to potential damage and action needs to be taken to resolve the fault.

What temperature should Rinnai be set at?

For your safety, Rinnai tankless water heaters come with a maximum temperature default setting of 120℉ to help prevent scalding. However, by following these simple steps, you can increase the temperature to 140℉ if you choose.

Why is my tankless water heater not getting hot?

Ensure there is no condensation or debris on the burners that may cause them to not ignite. If the flow is too low, the burner will not ignite. Low pressure is one of the most frequent tankless water heater problems and is easy to fix.

Why is my Rinnai tankless water heater not working?

How to Fix: Check for low flow in the water circulation system which causes short cycling. Confirm there are no obstructions in the combustion chamber or exhaust piping. Confirm no blockage in heat exchanger fins. Clean out heat exchanger fins or replace heat exchanger.

How do I connect my Rinnai to WIFI?

Download the Rinnai app from the Apple® Store or Google® Play Store. 3. Connect the module to your Wi-Fi network. When setup is complete, the owner will have access to remotely monitor and control their Rinnai tankless water heater using their smart device.