My unit is 2 years old! SHOP PARTS Info about all the performed services, including dates. A tankless water heater takes up much less room that a traditional water heater because it does not contain water within the unit. Call the technician. Follow the descaling procedure to remove the scale build up in the heat exchanger (there should be an error code). Contractor or business name who did the installation and service. This article has been viewed 60223 times. All electric water heaters and gas heaters that use electricity: The first … How to troubleshoot Rheem tankless water heaters by using the service error codes chart. Common issues associated with a 12 … Code 12 on a Rinnai tankless checking the flame rods - YouTube Solution: Make sure that the hot water tap is open enough, so it provides at least the minimum required water flow. All rights reservedHot-water-heaters-reviews.com is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites. Solution: You must descale the water heater. Ruud Ruud air conditioner review, prices, and model comparison. How to get help! Water temperature on the remote control is set too high. Check if the water inlet filter or fixture aerator is clogged and unblock it if it is. 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. 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. 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. Keeping the Fires Lit on Your Rheem Furnace. There are no attachments for this article. The flame roll out switches are around the burner box and have a tiny red reset. A burner with no flame may release gas into the air. The most advanced models feature a control function, which switches on a blinking LED light in case it detects a problem. Check to make sure there is gas to the unit and that the pressure is correct. Step 4 Error 12 is typically caused by dirty flame sensing rods. Disconnect the remote control, PC board, and all wiring harnesses, then reconnect. Error code 12 indicates your Rinnai hot water system has a flame failure or low gas flow. You can either left-click on the link to open the manual in a new tab or right-click and save a copy directly on your computer. Please see the Owner's Guide for your Continuous Flow Water Heater model. The water is heated as it passes through the tankless water heater. Check the gas pressure; it might be too low, or the gas valve is not fully open. Symptoms, causes and step-by-step troubleshooting guide to fix the most common problems on Rheem on-demand models. Here are tips for solving your Rheem water heater problem or deciding to call a Rheem service company to handle the repair. Another problem that might occur when the water flow is reduced is the excessive temperature of the heat exchanger. I have a Rheem furnace year 2011 have a code 12 low flame sense, code 45 low pressure switch open-inducer on high, code 46 low pressure switch open- inducer on low. Please add a comment if you would like to provide us with feedback about this article. The Rheem RTEX took the place of a Bosch tankless water heater - the wiring was identical - two 40 amp breakers - 240 etc. An error code 12 indicates a flame loss. we have had rain/snow for the past day, not sure if this has an effect. No Hot Water . Rheem, a furnace and home appliance manufacturer based in California, produces a line of furnaces for home use. No heat: Furnaces have many components, and a malfunction with lots of these can result in a furnace that doesn’t produce heat.Some of the most common components involved include the gas, power, thermostat, heat exchanger, and ignitor. Rheem fault code 16 – This is an over temperature warning which could indicate a possible clogged heat exchanger. Increase the flow. 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. The thermocouple tells … When to call a professional to repair your Rheem furnace. Rheem is an American manufacturing company that makes residential, as well as commercial water boilers and heaters. This means that the unit is detecting a flame, but the flame is being extinguished during operation (weak flame). Ensure the ignitor is operational before calling for service. We will assume that the Rheem tankless water heater was professionally installed by the licensed plumber/installer. 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. Energy saving features include a timer to turn the unit off and a sleep mode that powers down the unit when it’s not in use. Clogged condensate neutralizer. The water shutoff valve and hot water tap need to be fully open. Cause: The water heater and its burner doesn't get enough gas. 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. Tankless. We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to amazon.com or amazon.ca Article Number: 218 | Rating: 4.1/5 from 8 votes | Last Updated: Mon, Oct 6, 2014 2:27 PM. A code 12 means the unit has a weak flame and that water is not being heated properly. Safety features including a safety lock and automatic time out. We will carefully analyze your feedback and use it to improve our Articles, but we will not reply to you. 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