If the water heater has the mixing valve installed, and it does not operate properly, it has to be replaced. RTG2-42 water heater pdf manual download. All electric water heaters and gas heaters that use electricity: The first … An error code 12 found on the Rinnai tankless water heater means there is no flame, or a water heater didn’t recognize a flame in the combustion chamber. Use the error code guideline below to see where the problem is, or call the licensed technician if the code is different from those found here. Check the gas valve and open it completely if the error code is "11" and contact your gas company if the error code is "12," indicating that the gas supply was interrupted. Check to make sure there is gas to the unit and that the pressure is correct. If you have an issue that requires a reply, Viewed 20037 times since Thu, Mar 1, 2012, Viewed 10383 times since Wed, Oct 26, 2011, Copyright © 2020, NORITZ AMERICA CORP.All Rights Reserved, http://support.noritz.com/servicereplocator.php. Increase the temperature on the remote if it is set too low. Call the service if none of the steps taken above works. Step 3 Open the hot water faucet fully if the error code is "15," indicating a low hot water supply. Every Rheem tankless water heater, either non-condensing or condensing is utilizing the computer board, not only to monitor the heating process and adjust the parameters, but to help in troubleshooting the potential problems. View and Download Rheem RTG2-42 troubleshooting manual online. When an error code is displayed on display and before you call the service support, do the following to reset the system, which might fix the issue: If nothing happens after resetting the unit and the error code is still visible do the following: Cause: Limescale deposits in the heat exchanger... water flow is reduced, and the temperature increases significantly. There are no attachments for this article. Rheem fault code 16 – This is an over temperature warning which could indicate a possible clogged heat exchanger. What it Means: Flame failure: The heater can’t maintain a flame. How to Fix: Check for proper grounding and that the device is receiving gas of the right type and pressure.Examine the flame rod to ensure it’s connected and has no carbon buildup. Call your licensed contractor who will likely take similar steps as outlined for code 11. Solution: You must descale the water heater. Call the technician. So is the case with… Older Rheem furnaces have pilot lights the burn continuously. This article has been viewed 60223 times. Rheem Rheem air conditioner review, prices, and model comparison. Safety features including a safety lock and automatic time out. See the example of descaling the Bosch tankless heater. Ruud Ruud air conditioner review, prices, and model comparison. Follow the descaling procedure to remove the scale build up in the heat exchanger (there should be an error code). Rheem Manufacturing ranks as the global leader in the manufacture of high-quality, sustainable, and innovative water heaters, tankless water heaters, air conditioners, furnaces, pool heaters, and HVAC systems for residential and commercial applications, and is a full member of AHRI, the Air-Conditioning, Heating, & Refrigeration Institute. A burner with no flame may release gas into the air. Paloma sells a line of natural gas-heated tankless water heaters. A tankless water heater takes up much less room that a traditional water heater because it does not contain water within the unit. Cause: The blockage in the air supply pipe or the exhaust vent, or the connection/termination is loose or not correctly done. Error code 12 indicates your Rinnai hot water system has a flame failure or low gas flow. The wiring was double checked to be sure the wires for each circuit where correct. If you encounter error code 12, you can try the following steps to fix the problem: Check gas is turned on at the gas metre or cylinder Check gas is turned on at the water heater Also for: Rtg53, Rtg66, Rtg74, Svc 810. My unit is 2 years old! SHOP PARTS Step 4 A flame sensor detects heat coming from the burners. The thermocouple tells … We will assume that the Rheem tankless water heater was professionally installed by the licensed plumber/installer. Check the thermostat on the remote control, it might be set too low. An error code 12 indicates a flame loss. When the problem occurs, the error code is displayed on the LCD screen of the remote or user interface, so by understanding the meaning of the code the troubleshooting gets easier. This is a safety mechanism. The most advanced models feature a control function, which switches on a blinking LED light in case it detects a problem. If water is not equipped with the control panel, the same error code appears on the remote controller. The neutralizer needs to be replaced soon. My Rheem tankless water heater will run a minute and kick off putting out the 13 code. No Hot Water . The Rheem Manufacturing Company produces a line of water heaters, air conditioners and furnaces for both homes and businesses. If using the propane gas, make sure that the propane tank has enough gas. You can see diagnostic information on the control panel, where you set the temperature. Solution: Make sure that the hot water tap is open enough, so it provides at least the minimum required water flow. 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