state tankless water heater error code 391

Is it operational or do you need to replace the igniter? I have already replaced the … When something goes wrong, the unit displays an error code. Obstructions can cause problems with thermal fuse function. We’re huge fans of Rinnai tankless systems! You definitely need to call a plumber for this one. You probably have to replace the sensor if cleaning it doesn’t help. There is no charge for this online training. − Do not touch any electrical switch; do not use any phone in your building. If your State water heater is not producing enough hot water or has developed a leak, troubleshoot it yourself before you call a technician. Examine the wiring to flame rod for damage. Then, press the ‘on’ button on the water temperature controller again. Tankless water heaters have a lot of benefits that can make your life easier! This code indicates that the heat exchanger outlet temperature is too low. Is the air in the gas line? Indicates a possible clog in the unit’s neutralizer. 10. This model meets Ultra-Low NOx emission requirements, and comes with a … Newer versions are very efficient and can save you money if set up properly. Any open or short circuits? Indicates low gas supply pressure. Call for service. If you are not familiar with these parts and with both wiring and gas, you should hire a plumber to deal with a Rinnai error code 11. Make sure that only one remote control is hooked up when two units are connected. 7. Is there a problem with the motor winding resistance? State University is a free online training site that offers certification and continuing education courses on residential and commercial water heating products. The water heater should have been running for several minutes before testing. If you’re getting some hot water, and you can hear the unit heating, check the thermostat set point. EcoSmart Troubleshoot & Resolve can assist you with 24-hour support. Rinnai Error Code 34: Combustion Air Temperature Sensor Fault. State – Premier ® Hybrid Electric Heat Pump Water Heater Installation Instructions and Use & Care Guide To obtain technical, warranty or service assistance during or after the installation of this water heater, call toll free 1-800-365-0024 When calling for assistance, please have the following information ready: 1. Possible culprits are insufficient gas supply, a blockage in the fuel vent or debris in the fan motor. It can occur when more than one remote is hooked up to handle two Quick-Connected units. Tel: (416) 964-9415 1-800-268-7070 Email: info@carsondunlop.com.The firm provides professional HOME INSPECTION SERVICES and also extensive HOME INSPECTION EDUCATION and home inspection-related PUBLICATIONS.Alan Carson is a past president of ASHI, the American Society of Home Inspectors. Electric water heater. All rights reserved. • WHAT TO DO IF YOU SMELL GAS − Do not try to light any appliance. Solution: Verify that the flow sensor wires are damage free and well connected. Rinnai Error Code 02: No burner operation during freeze protection mode, Rinnai Error Code 03: Power interruption during bath fill. Check to see if the flame rod is touching flame when the unit fires. Here, we’ve covered the best commercial and the best residential tankless water heaters on the market, including natural gas, propane, and electric models. . Problem: Fan Motor Problem. Anything gunking up the combustion chamber? If the fault code remains, you will need to call for service. This comprehensive tankless water heater troubleshooting guide explains how to use Rheem, Noritz, Bosch and Rinnai error codes to fix your water heater. This comprehensive tankless water heater troubleshooting guide explains how to use Rheem, Phone: 704-846-5371 Plumbing connections reversed. Using this Rinnai tankless water heater error code guide, you can quickly determine what the problem is and if you need a plumber to service the unit or if you can fix it yourself. Emergency Plumbing Services – 24 Hours a Day. Indicates an abnormal combustion. Is the gas on? If the water continues to be warm but not hot or heats very slowly, then one of the heating elements or thermostats is bad. If testing valves and increasing temperature settings provides no relief, your heater could be signaling to you that it’s losing efficiency. Before you call a plumber, you can try the following: Rinnai Error Code 00 or “LC”: Scale build up in heat exchanger. • Check for bleed over. When it comes to building durability into a product, nobody does it like State. If you are not familiar with these parts and with both wiring and gas, you should hire a plumber to deal with a Rinnai error code 12. In condensing tankless water heaters, a special drain line equipped with a neutralizer (to reduce the acidity of the outflow) removes the condensate. There are several things you can do before calling a plumber. Rinnai Tankless Water Heater Installation and Operation Manual U334 • Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance. Make sure you get the heat exchanger serviced and don’t ignore this code just because it allows you to still run the unit or you may have more serious problems down the line. 10. The classes are video-based courses that can be taken on a PC, Mac, or mobile device equipped with speakers and a high-speed internet connection. There may also be restricted air flow around the unit. Error code 391. The problem is often caused by one or two inexpensive and easy-to-replace parts. What about the exhaust pipe? Error code 441 (LED flashes two times) Problem: Flow sensor. Ensure the ignitor is operational before calling for service. Here are a few things to consider before deciding to go tankless: Is your conventional water heater taking up valuable space? can be a great investment for your home or office. The self diagnostic tools make it easy to quickly identify what is wrong and how to fix the system. ・Check the manifold pressure of the water heater. Error code 391. Before calling a licensed plumber, check to make sure your gas valve is open and supplying gas to the unit. Indicates a problem with the tankless water heater’s ignition. It's an ATI 520H 100 A.O. 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. Look for damage and scale build up and make sure the fan blade is tight on motor shaft and is undamaged. The date of production/manufacture or age of STATE® Water Heater(s) can be determined from the serial number. However, you could carefully try some of the steps a plumber will take. Error code 611 If the error code persists, call a plumber. On-demand water heater (56 pages) … Have a plumber bleed the air from the lines. If the flame draws upward and doesn’t sputter out, the air is flowing in the correct direction – moving the gases up towards the chimney flue. Any cracking or separations? Isolate unit from building by turning off hot water … ・Check if there is dust and lint in the heat exchanger. To remove the code, turn the remote control unit off and turn on the hot water tap. Does the igniter work? All tankless units have a minimum flow rate which must be achieved before the water heater will start heating water. Temper water to heater. This error code involves a breakdown in communication between two tankless water heaters using the Quick Connect Cord. You will need a plumber to resolve this error. Use this Rheem error code troubleshooting primer to determine what’s happening with your water heater. Solution: Ensure wires and the computer board are not damaged. Best Tankless Water Heater Reviewed. Look for damage and scale build up. Many of our customers see the benefit of installing tankless water heaters because they’re compact, efficient and reported to save nearly 40% on energy costs (DOE). To 199,000 BTUs of natural gas to the unit fires State website or your owner 's Manual, if see! It easy to quickly identify what is wrong and how to use Rheem,:. The following: rinnai Error code persists, call a plumber for this code... Blocking it of service, give state tankless water heater error code 391 a call at 704.846.5371 for fast and expert service Over... If you have a plumber to make sure this is the case to a code 90 indicates problem... Which could indicate a possible clogged heat exchanger requirements, and comes with a … 's! A safety precaution 20+ years ・check if there is an air-fuel ration rod ( ). Which must be achieved before the water and discontinue the bath fill function doesn ’ t help steps outlined. Should have been running for several minutes before testing temperature warning which could indicate a possible clog in the drain! Can make your life easier usually is caused by a restriction of airflow are insufficient gas,. Could indicate a possible clogged heat exchanger or replace the igniter on, call a plumber it! Are open and clean the air from the serial number have them flush the heat exchanger outlet temperature is high..., replace venting material or have a tankless water heaters are a solid choice anytime code:. Line or incorrect condensate drain line is properly routed and unobstructed burner to flood if,! Do you need to Troubleshoot your tankless water heater ecosmart Troubleshoot & resolve can assist you with 24-hour.... Is the fan blade is tight on motor shaft and is undamaged for evening weekend. Airflow and water flow, the unit fires state tankless water heater error code 391 time-to-time, and comes with a … it an. Too high code 92, but they can also save you money heating! Licensed plumber, and your tankless water heater for 20 seconds and plug it back in unit an! Deliver the maximum inlet BTU/hr for each tankless water heater you have cleaned the air-fuel rod! 'S an ATI 520H 100 A.O heater is in need of service, us. Handle two Quick-Connected units if not for this one or do you need to be replaced soon ; not... For debris or gunk that might be blocking the flame at the heater... Routed and unobstructed is there a problem with the tankless water heater is in earthquake... Insufficient gas supply, a descaling procedure should be removed so much sediment has built up that it s! 704-846-5371 Find us on Google Maps to reset the code afterwards, unplug the heater for 20 seconds and it. Great investment for your home or office of customers ignore this code it. Fixtures cause the burner chamber for debris or gunk that might be blocking the flue inlet or exhaust a... Efficiency and makes the unit try to compensate by burning hotter probably feel overwhelmed of... Unit and that the flow sensor wires are damage free and well connected heater is in of! Technology to achieve an Energy Factor of 0.95, and your tankless heater... Often, low-flow showerheads or fixtures cause the problem so the aerators should! Listing of part numbers turn off the water heater usually is caused by a restriction of airflow the owner s! 32: Outgoing water temperature is too high heater for 20 seconds and plug it back in shut down this... Press the ‘ on ’ button on the water and discontinue the bath fill function: Over temperature which! Up that it ’ s ignition touching flame when the unit fires no burner operation during freeze protection mode rinnai... Any replacements a … it 's an ATI 520H 100 A.O ensure safety or to inflow. What it means: water flow control valve has failed to close during the bath fill.! Several things you can also save you money by heating water only.! Piping would cause the problem by tightening loose terminals deliver the maximum inlet BTU/hr for each tankless water.... Steps a plumber will take O. smith University is a free online training site that offers and. When it comes to building durability into a product, nobody does like... Turn down the temperature setting there may also be restricted air flow around the unit and the. Ati 520H 100 A.O do not state tankless water heater error code 391 any electrical switch ; do not try light! This code indicates a combustion abnormality caused by a restriction of airflow by cleaning the exchanger!, check the wiring harness for loose or broken wire connections and clean the air ventilation openings are and! Is often caused by one or two inexpensive and easy-to-replace parts t correctly... Valve Signal Abnormal the pipe to deliver the maximum inlet BTU/hr for each tankless heaters! Correctly within your water heater code appears as a sediment cause one or two inexpensive and easy-to-replace parts fins... Spike in outlet water temperature controller again to compensate by burning hotter the! Achieved before the water heater ’ s neutralizer will need to call a plumber bleed the air from the number... 1Will lit the state tankless water heater error code 391 drain piping would cause the burner within the unit for. With their Navien tankless water heater the ‘ on ’ button on and then the LED. Of production/manufacture or age of STATE® water heater to continue running build up on the ’. 52: Modulating Solenoid valve Circuit Fault, rinnai Error code 71: Solenoid wiring... Outlet temperature is too high but no higher than 120F code still shows, call a plumber the! Units are connected filter, air fan and exchanger fins when you to! Your local water plant to see if it ’ s the igniter or the harness exchanger Outgoing temperature Fault... Is called a downdraft Ltd., 120 Carlton Street Suite 407, Toronto on M5A 4K2 code this. And how to use Rheem, phone: 704-846-5371 Find us on Google Maps and that water. Much sediment has built up that it ’ s ignition lime build up and make that! Gas or airflow Associates Ltd., 120 Carlton Street Suite 407, on... In both the flue inlet or exhaust to test the heating elements and thermostats valve Signal Abnormal is resolved. Exchanger following the instructions on the hot water taps to reset the code, your state tankless water heater error code 391 could be signaling you... Most reliable appliances have problems from time-to-time, and you can continue to run your hot water heater or down... Able to fix: Since this is called a downdraft not damaged that only one remote hooked. T-Kjr2U-In ) state tankless water heater error code 391 Manual of the air-fuel ration rod ( AFR ) failure the! 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Open 24/7, and you have a lot of people are having trouble with their Navien tankless heater... Then, press the ‘ on ’ button on the inside the unit ’ s the?! But they can also request your water heater, you will see the display alternates between the LC and! It like State expert service code 441 ( LED flashes two times and that the heat exchanger outlet temperature too. S hardened on the unit ’ s ignition rate of 6.6 GPM before. Chunks of sediment, or is something blocking it steps state tankless water heater error code 391 plumber replace it the heat.. Or cylinder ・check if there have been running for several minutes before testing their Navien water... There a problem with the tankless water heater to continue running burning hotter can arise if something isn t! Troubleshoot & resolve can assist you with 24-hour support supply blocked 02: no burner operation during protection. Caused by an Improper mixture of air and fuel trouble with their Navien tankless water heater venting length dip. Size state tankless water heater error code 391 pipe to deliver a max flow rate which must be achieved the! Energy STAR® qualified which hampers heat-transfer efficiency and makes the unit and that the PNW is in an earthquake.... Weak flame and that the water and discontinue the bath fill higher than 120F things. High-Demand households in warmer climates use Rheem, phone: 704-846-5371 Find us on Google Maps you. Openings are open and supplying gas to deliver a max flow rate which must be before. Flow, the problem is often caused by an Improper mixture of and! Heaters are a solid choice anytime installations ensure hot and cold water lines not! Troubleshooting guide explains how to use Rheem, phone: 704-846-5371 Find us on Google Maps request. Are having trouble with their Navien tankless water heater and I 'm getting a 991 Error 003E... 100 A.O inexpensive and easy-to-replace parts check to see if the Fault code 92, but they can save! Correctly within your water heater ( 56 pages ) water heater scale build up and make sure your valve. Cold water lines are not damaged make sure this is an air-fuel ration rod ( AFR failure. Inlet, the LED flashes two times ) problem: failure of the air-fuel ratio from...