Alternatively, the error code will flash four times. Hot Surface ignitor not positioned correctly - ? As a second-generation plumber, it was easy for Anthony to get used to the technicalities of all from a tender age, Table Shower Ultimate Guide (Must Know Secrets), 3 Ways to REMOVE PVC Pipe From a FITTING (Video Review), How To Fix A Toilet Backing Up Into A Bath/Shower, Why Your Toilet Keeps Clogging And How To Fix It. Problem: Problem with the air-fuel ratio rod - AFR. Is there leaking from the heat exchanger? smith serial L04A143174 50gal. Keep in mind that the error codes are shown differently if the units are connected through the Easy-Link System it can be seen what the error code is and which unit has it. How to troubleshoot AO Smith condensing water heaters from 320 and 520 series and understanding the error codes 101, 111, 121, 131 and others. To clean a clogged drain valve, close the valve and insert a stiff wire to loosen the debris blocking the valve with a bucket or towels beneath. In these tough times I can respect that not everyone can afford to hire a technician to repair every issue with appliances and other household staples. Turn power to the water heater back on and immediately (within 10 seconds) press and hold both the HOTTER and COOLER buttons until the green VACATION LED light begins to flash. This thermistor should be found attached to your water heaters exhaust. AO Smith ProLine Power Vent Water Heaters 75 Gallon - 76,000 BTU ProLine Power Vent Residential Gas Water Heater w/ Side Connection (NG) Brand: AO Smith SKU: GPVX-75L Q&A: - + $1,998.99 each ADD TO CART In Stock Get 46 Thu, Jan 5 - Mon, Jan 9 MANUALS (4) Brochure Product Overview Install Instructions Warranty Info This item replaces: GPS-75L Before you start to disassemble your water heater, remember to shut off its power and that you reassemble it correctly. Clean away any dirt or debris and check the quality of the connection wires. Once passed, set the knob to Pilot, hold down the red Set button as well as the ignitor, and light the pilot. Dirty/Blocked Filter How To Reset AO Smith Water Heater Easily FAQs: What are the common problems of the AO Smith water heater? How to use a diagnostic system to repair a faulty heater. callback: cb If you have recently experienced cold weather, it could also be that your connectors are frozen and need warming up. Its an AO Smith FPSH/FPCR which looks like brand new. If voltage is coming to the ignitor and it is not glowing, this indicates that the ignitor is defective. This display is capable of relaying various messages and codes which indicate to owners what exactly is going on within the device. How to troubleshoot Rinnai water heaters successfully using Rinnai error codes guide. Problem: Problem with the computer board. Sometimes, a faulty sensor is also responsible for this issue. The A.O Smith electrical or gas water heater comes with a reset button somewhere in the heater itself. I have a propane water heater that is 10yrs. Scale build up could be the cause of locking the motor drive and is usually caused by a water leak somewhere within your water heater. It is important to note that a pilot light needs enough ventilation to provide combustible air, but not so much that the airflow will cause the light to go out over and over. Solution: Check the wire connection, wire breakage, and debris on the flow sensor impeller. Troubleshooting John Wood tankless water heaters. If the thermocouple does not detect a flame, it will prevent the gas valve from opening. Use the search box below to quickly find your model number. 68.50" 20.00" . While its fun and sometimes more cost effective to Do It Yourself. What is it with these units that everyone has major complaints about them? PHP42,000.00. Revision 3 includes updated troubleshooting for error codes 4 and 6 and technical bulletins, Manual will be automatically added to "My Manuals", Error Code 3 - Pressure Switch Circuit Remains Closed, Error Code 4 - Pressure Switch Circuit Remains Open, Error Code 7,8,9 - Internal Control Failures, Error Code 10 - Flame Sensed out of Sequence, Error Code 11 - High Temperature Cutoff (Eco) Activated, Error Code 12 - Temperature Adjust Buttons Stuck Closed, Error Code 13 - Temperature Probe Open of Shorted, Error Code 14 - Resistor Wire Open or Shorted, Error Code 15 - Resistor Wire Resistance out of Tolerance, Technical Bulletin - Ignition and Flame Failure A-022-04 & S-021-04 Combined, Air Pressure Switch Circuit - Residential Power Vent/Power Direct Vent, Vent Termination Restrictor Usage for 40,000 Btu Power Vent Models, TB-A028-06 - A. O. Smith - FVIR Intelli-Vent Troubleshooting Chart, Normal Operating Sequence - Pressure Switch Circuit, Air Pressure Switch Circuit: Residential Power-Vent & Power-Direct-Vent Water Heaters, Air Pressure Switch Circuit: Cyclone Water Heater. } We offer the widest range of electric, gas-fired, & energy-saving heat pump storage heaters. The water heater of any home or business is the silent, but essential plumbing fixture that makes for a comfortable and operable lifestyle by providing water to wash dishes, loads of laundry, provide hot showers and baths, keep pipes from freezing in the winter, among other daily tasks and activities. (function(c,l,a,r,i,t,y){c[a]=c[a]||function(){(c[a].q=c[a].q||[]).push(arguments)};t=l.createElement(r);t.async=1;t.src="https://www.clarity.ms/tag/"+i;y=l.getElementsByTagName(r)[0];y.parentNode.insertBefore(t,y);})(window,document,"clarity","script","du9vrz0td8"); If the problem persists then replace the FV Sensor. This time, it is referring to a problem with your exhaust thermistor. Turn off both gas and electric power before working on the heater. SOLUTION: Start by draining and flushing the heater and then refill it. Thermistors are an important component of any water heater as it helps your water heater heat your water to the correct temperature. The thermocouple detects the pilot flame. Once your inlet thermistor is clean and properly connected, then the error code should vanish and your water heater return to its usual state. My basement flooded and the gas value and temperature control unit were under about 15 of water. And, our specialty vent gas water heater options can be installed almost anywhere in your home because they can vent up to 40 feet. Water heaters may be one of those plumbing fixtures that stays out of sight and out of mind for the majority of its working time, but when things begin to go wrong with an AO Smith water heater, effective and long-lasting solutions are needed in a very urgent manner. Gas Hot Water Heater will not stay lit? document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); Your email address will not be published. As an affiliate of retailers(like Amazon), we earn from qualifying purchases. forms: { SOLUTION: First make sure that the leak is not coming from any nearby appliances, then try tightening all threaded pipe connections. } Problem: Gas solenoid valve drive circuit failure. We will assume that the tankless unit, before failure, was correctly installed (with the correct gas type), per the manufacturer's instructions and codes. As a leader, we refuse to sit quietly. window.mc4wp.listeners.push( Usually the pilot light will go out will not stay lit without holding on the black gas valve control. The reset button will be located right inside the panel. Insert equivalent series resistance between 70,000-1,700,000 ohms. An error code of be1 on an AO Smith water heater indicates ignition failure. Get Help from a Local Plumber. If the blower on your AO Smith water heater is not working, what can be done? listeners: [], An error code of e02 on an AO Smith water heater indicates either a bad thermostat, a defective computer board, or that the computer module has connectors that have burnt out. Other causes of the ignition/flame failure: Low pressure - the manifold gas pressure cannot be adjusted, so if it is off by 0.3" W.C., you must replace the gas control valve. Your AO Smith Water Heater will flash the error code 'E03' if there is a low water level in the heater. Remove and keep the insulation. If everything seems to be in order but your water heater is still failing to ignite, then it is safer to call out a technician to take a look at it. If you suspect this is the case and do not have much experience, call a repairman to inspect the unit and have any faulty sensors replaced. However, there is no need to be panicked because they have the solution for this circumstance. Smith Water Heater Error Codes Appliance Helpers 3.45K subscribers 17K views 1 year ago If you're looking for help fixing your A.O. It depends on how many times the flashing light is blinking. Required Part Water Heater Thermocouple If the condensate drain is not properly installed on the vent collar of the water heater, then there could be water in the internal combustion engine. Error Code on AO Smith FPSH 50 270E My 12 yr old hot water heater goes through a number of attempts to light the burner, sometimes it works and sometime it doesn't. This started happening a few weeks ago. 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. Malfunctioning Control Board 4. If the control harness is working improperly, try replacing it. arrow_forward; Electric Tank Water Heaters. Solution: Is the water heater set for the right elevation? If you go to drain your AO Smith water heater and it will not drain, what might the cause of this hold up and what can be done to get the water draining quickly? Categories AO Smith Water Heater, Home and Kitchen, Water Heater. The cause of this problem could be a range of different issues including connection issues, broken wires, and even corrosion around the connectors. Smith OEM Water Heater Parts Supplies Depot carries a huge selection of factory A.O. Home | Sitemap | Blog| Privacy | Disclaimer | Contact| About. Preventive inspection and regular maintenance can reduce the risk. Again, this is an issue for a professional but you can check that the proper settings are in place on the computer board. If there are thermostat problems you might need to replace the thermostat. Another sign that this is the issue is if the error code is blinking five times. Check and repair all possible leaks. This is how long the limited warranty lasts, depending on the type of water heater. How To Fix: To solve & clear the error message, turn the power off to your water heater first. Could you suggest where to go next. , Solution: Check for the soot on the AFR rod, wire connection, and breakage. Once you have released both buttons for 2 seconds, you will then press the same buttons once again until you see that all the icons on the display are no longer flashing and have steadied. Check if there are any foreign particles or grease on the gas burner and fan motor. } This error code is usually a sign that there is some kind of blockage in your vents, gas burner or fan motor. Refer to the Yellow Pages for your plumber or contact the water heater manufacturer by calling 1-800-821-2017. If the wiring is correct than you will most likely need to replace the hot surface ignitor. The fan motor could also be blocked by dust, debris or dirt and needs a clean. - If you find smoking and carbon deposits and smell the burning gas inside your home or room where the gas water heater is installed, make sure that there is no obstruction in the vents, flue baffle, and a gas burner. This error code signifies that there is a problem with your outlet thermistor. Solution: Check if the remote controller is of the right type, also connections between the water heater and remote. For example, a model 510 will display the numerical code on the 7-Seg LED on the computer board, while the 110 and 310 models only a blinking red LED that can flash one time or more. AO Smith tankless error codes list To fix the tankless water heater from AO Smith properly and fast, we will show all three error codes (in the subtitle), the first for the units with the remote controller, the second for the units with the 7-Seg LED, and third are those heaters that do not have the remote. This website might also participates in affiliate programs with other online retailers. Power vent works properly and burner ignites and has blue flame but runs longer with less hot water. An error code of 121 on an AO Smith water heater indicates flame loss. My water heater keeps shutting down and going into vacation mode. If you go through this process, return power to the unit, and notice that the e03 code is still displaying, this could be an indication that there is a faulty sensor within the water heater. Had to replace the thermostat and elements in less than 30 days as the thermostat was stuck. There are a multitude of problems that can go wrong with water heaters such as: water leaks, temperature/thermostat issues, odors, blower malfunctions among many other things. This error code indicates that there is a problem with the flow sensor on your AO smith tankless water heater. Solution: Check if the condensate drain is installed on the vent collar of the heater. If it's shorted out, unplug the machine . How to use diagnostic system and fix the problems using the error codes that appear on the remote controller. Gas Tank Water Heaters. This error code pops up whenever there is a fault with the fan motor of your tankless water heater. If your AO Smith water heater isnt working, complete a reset of the display panel, check for continuity within the pressure switch and within the fan of the blower, and be sure that no sediment is blocking the drain valve and thus, preventing the unit from draining. Our website is 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. This heater was for my daughter. Problem: Bypass valve fault (only model 540). Required fields are marked *. Once thats one, the error code should vanish. This cutting edge technology prevents sediment and scaling, fights corrosion and extends the life of your water heater. If you are having issues with your A O Smith ProMax Power Vent (C3FVIR) Water Heater, than this guide will hopefully help you resolve a variety of issues that could arise with this particular unit. Gas supply is off or too low to operate - gas is on and working to stove and fireplace 2. Solution: Check if the Hi-limit switch properly functions and that there is no loose or broken wire connections, no soot on the flame rod, or a damaged computer board. SOLUTION: Check that all of the wiring is correct and secure. If the wiring is correct than you should replace the pressure switch. SOLUTION: Make sure the air flow restrictor is working properly. Also be sure that the ambient temperature in the room that the heater is in is not too high. Most Common Problems Water heater not heating 10 possible causes and potential solutions View solutions Featured Video 02:24 118,200 363 Water heater leaking 2 possible causes and potential solutions View solutions Featured Video 01:22 3,806 11 Water heater not lighting 5 possible causes and potential solutions View solutions Featured Video 01:21 SOLUTION: Check to see if the wiring for the FV Sensor is correct. This means that the pilot was not able to light and thus, the ignitor should be tested for function. 68.12" 22.00" . We are going to cover some of the most common error codes and problems seen with the AO Smith tankless water heater so you know what you can do when the issue occurs. To do this, disconnect power and press two temperature adjustment buttons on the display. })(); Anthony Barnes is the founder of Water Heater Hub and a second-generation plumber by profession. SOLUTION: First check that all the wiring is correct and secure. Problem: Miscommunication between the water heater and remote controller. If your display screen is showing this error code and is flashing twice, then this is a sign that there is a problem with your water heaters air-fuel ratio rod (sometimes referred to as the AFR for short). Smith Water Heater. An error code of 991 on an AO Smith water heater indicates that there is abnormal combustion which is caused by either an obstructed exhaust or an air intake that is insufficient. Once we have lit the pilot, after turning the thermostat up to the temprature range, burner port stays lit for just few minutes. window.mc4wp = window.mc4wp || { Shorted Heating Elements 5. AO Smith Water Heater Error Code 111 An error code of 111 on an AO Smith water heater indicates there is an ignition failure. FIX: Check for the proper settings on the computer board. Obstructions that should be removed include debris that may be surrounding either of these areas or even items that are so close to the water heater that they could prevent the proper flow of air. When the heating element shorts out, it will cause a short circuit, which will allow it to continue heating, causing the water to become too hot. This post was first published on 2022-04-05. Have an AO water heater that is almost brand new but there's Have an AO Smith water heater that is almost brand new but there's never enough hot water and it starts beeping constantly when the water read more MichaelB1127 Owner BS 5 Have an Ao Smith promax. You may be wondering why sediment would be at the bottom of your water heater, as this is only an out source of water rather than an input. Hotwatertalk.com is a participant in the Amazon Services LLC Associates Program and other affiliate advertising programs, designed to provide a means for us to earn fees by linking to the affiliated sites. Residential Water Heaters; Commercial Water Heaters; If there is a scale build up, then you should also check for any water leakages that are causing scale to build up inside your water heater. Pinpoint the switch on the computer board and make sure the settings are according to the user manual. The AO Smith water heater is too hot. Solution: See the error codes 331, 321, and 311. See how to troubleshoot the flame failure, not enough, no hot water . An error code of e04 on an AO Smith water heater indicates an upper heat element failure. This post was published on 2022-04-05. Manual for 400 - 1000 models. We have nationally competitive pricing on all A.O. Alternatively, it could be that debris has affected the flow sensors impeller and just needs a bit of cleaning to get back to functioning as normal. If unclogged, water will begin to flow out of the valve. Just like with the previous thermistor failure errors, you should follow the same process to solve it. Both the burner and pilot light go out. PROBLEM: Error in the Hot surface ignitor circuit. Release the HOTTER and COOLER buttons and immediately press and hold the HOTTER and COOLER buttons again until the green VACATION LED light is steady (NOT FLASHING). To solve this issue, you need to check for any condensation within the heater. No spam, we promise. Save my name, email, and website in this browser for the next time I comment. -Cycle power ON. If a significant amount has piled up, this may cause the drain valve to clog and will cause difficulty draining the unit until unclogged. Smith OEM Water Heater Parts . (function() { A list of Takagi error codes for easy troubleshooting of Takagi tankless water heaters. If the pressure switch is not opening or closing along with the use of the water heater, this can cause the fan to run constantly without stopping when the heater is essentially dormant. The NAECA III-compliant model boasts 60,000 BTUs of power and 65-gallon per hour recovery50 percent higher than a standard 50-gallon gas water heater. Solution: Check for the proper settings on the computer board. ProMax Atmospheric Vent is A.O. If the display on your AO Smith water heater is not working, what can be done to restore function to this feature? Error Code 10 (101) Five Times If people see this error code, they have to be more aware because it is the warning for the 991 error code. CODE: 03 (031), One time PROBLEM: Incorrect dipswitch settings. What kind of crap is this!!!! The repair guide covers indoor, outdoor, condensing, non-condensing, and ultra-low NOx water heaters with on-demand technology. To fix the tankless water heater from AO Smith properly and fast, we will show all three error codes (in the subtitle), the first for the units with the remote controller, the second for the units with the 7-Seg LED, and third are those heaters that do not have the remote only blinking LED. Merely said, the ao smith promax water heater troubleshooting is universally . Smith Water Heater Manuals Anthony Barnes July 23, 2018 Need to Hire a Plumber? If there is air in the waterline, your water heater may throw this erratic code. If you see any scale buildup on your motor drive, you will need to clean it away with hydrochloric acid and water mixture (wear appropriate protection gear while handling this mixture). There may be some insulation covering the reset button. Look for the blockage in the vent system and ensure if the distance between the intake and exhaust is not too small. There are actually many types of thermistors in your water heater and thus, any error codes that relate to problems they are facing. EES-50 Electric Water Heater. Check to see if there is enough dilution air to mix with flue gases, also ensure that the dilution air is not too hot for mixing with flue gases. I'm a homeowner and I like to do things myself. PROBLEM: Burner will not stay lit for more than 5 seconds. FREE Estimates! If the problem continues it could be due to: lack of air supply, improperly installed vent piping, downdraft or poor combustion. Electric Polarity to unit is incorrect - Don't know why this would all of a sudden happen Get a free estimate online from top local home service pros in your area. I've replaced an electric hot water tank before, but never done much with gas. To resolve this issue, turn the gas control knob to Off and allow the room to air out for 10 minutes. However on some AO Smith water heaters, particularly older models, you'll see a confusion of letters and numbers in the serial number that may be decoded into manufacturing date as shown below. { var FIX=FIX||{}; Learn about AO Smith tankless error codes for easy and inexpensive troubleshooting. PHP43,500.00. I have a A. O. Smith gas water heater FPSH-50 234 and the blower assembly is making a lot of racket and sounds like it might be going out! I have a.o. You can test the heating element for continuity by using a multimeter and if continuity is not present, the heating element will need to be replaced. Have disconnected and reconected. Also, you should check the computer board for any sign of burn marks too. Shut off the water supply to the heater. Next remove the cap on the rubber boot vent terminal of the blower assembly and install a drain tube to port as per required codes. AFR rods monitor the air fuel ratio of your water heaters internal combustion engine, which is a massively important part of your water heaters function. Before developing Water Heater Hub, Anthony Barnes was a full-time plumber, and he has undertaken a wide variety of projects over the decades. AO Smith tankless water heaters equipped with the remote controller have a great advantage; a self-diagnosing function that helps in diagnosing the heating problem. Solution: Check the connections between water heaters. If you own an AO Smith tankless water heater, then its important that you know how it works and what to do when things go wrong. PHP37,500.00. Sometimes, you may find it behind the unit's removal metal panel. Ours are the only water heaters with the Blue Diamond Glass Lining for the inner tank. This error code is another thermistor failure but this time, it is referring to the mixing or mix thermistor. It functions just like an outlet thermistor, but is found on your inlet pipes instead of your outlet pipes. Clean your AFR rod of any soot, and check for any damage or loose connections to see if you need to find a replacement. Products. If the remote controller is not installed on the water heater, and there is a problem, the error codes will be shown differently. Common solutions for: AO Smith Water heater not heating 01 - AO Smith Water Heater Thermocouple Some gas water heaters have a thermocouple. on: function(evt, cb) { SOLUTION: Try cleaning and reintalling the air intake screen as well as the lint screen on the blower assembly. SOLUTION: Start by draining and flushing the heater and then refill it. Only. AO Smith water heaters should last for 6 - 10 years. That said, is there something I can lubricate inside the unit to make the noise stop? Verify that the water heater gets the right amount of gas fuel and combustion air. Also make sure to chlorinate the water supply. This error code usually means there is a fault with the flow adjustment valve. Make sure the polarity on the electrical outlet that the heater is plugged into is not reversed. While it may be igniting, its not keeping its flame and is going out before it can adequately warm up your water. You can now use this knowledge to help diagnose and fix problems with your AO Smith tankless water heater so you can continue enjoying hot water with little fuss! A.O. If you have a leaking T&P valve install a thermal expansion tank and check relief valve to make sure it is operating correctly. Any other models may have different codes for different issues. My A.O.Smith ProMax water heater is doing the same thing burner wont stay lit and water heater shuts off then lockout???? Low Voltage to the water heater - Don't know why this would all of a sudden happen 4. on 10-11-2012 WTF. Tankless water heater problems and how to repair models from Noritz, Rinnai, Takagi using error codes. Get Doc. Power vent on so Smith gas hot water heater keeps running Pilot stays lit when I pull off vent pipe off power vent burner comes on and when put vent pipe back on power vent burner stops pilot stays lit, Did you find a solution mine keeps running also, Your email address will not be published. It is best to replace water heaters before the 15th year. To resolve this issue, confirm that there are no broken or loose connections, no soot or rust on the flame rod, that the computer board is intact and free of damage, and that the Hi-limit switch is operating. Another sign that this is the issue is if the error code is blinking five times. Thanks in advance for your assistance. We recommend to always consult an expert before moving forward with any type of project or repair. A.O. An error code of 111 on an AO Smith water heater indicates there is an ignition failure. Now, you should be able to understand how these error codes work and what they mean. It usually means that there is a problem with the bypass valve. There could be an issue with the power supply of your water heater and thus it could be failing. SOLUTION: Check to see if the pressure switch wiring is correct and secure. Then check to see if the pressure switch tubing is connected properly. If the wiring is correct than you will probably need to replace the gas control valve. Copyright. A. O. Smith is a company known for its innovative technologies and energy-efficient solutions. An error code of 121 on an AO Smith water heater indicates that the heat pump compressor is not operating. . Find the most common problems and see how to fix issues. EMT 6 120V 1.44 KW 12A Mini Tank Water Heater 373.64: PROMAX DIRECT VENT (6 YEAR TANK / 6 YEAR PARTS . Solution: Check for connection and wire breakage or computer board failure (burn marks). It has been drying for two weeks now and was wondering the procedure for restart as the manual aslo got wet. Briefly saw all 6 LEDs lit while I was troubleshooting but now nothing. Sometimes if you are lucky, it could just be a bit of soot blocking the sensors other times, you may need to find a replacement AFR rod as soon as possible. arrow_forward; Hybrid Heat Pump Water Heaters. However, damage and soot can sometimes prevent the AFR rod from doing its job properly and it requires attention. When the water has stopped sputtering and is flowing well, return power to the unit. Our comprehensive A.O. Solution: Check for connection and breakage of wires, burn marks on the computer board, and power supply to the unit. Smith Water Heater, look no further! This is the final error code for thermistor failure. ProMax ECS30X Electric Water Heater. June 16th, 2018 - AO Smith Water Heater Models Below is our selection of AO Smith Water Heater model numbers Select a model from the list to see an overview of its replacement parts 1 / 6 Ao Smith Promax Water Heater Troubleshooting rhartz de An error code of e03 on an AO Smith water heater indicates a low water level within the unit. To resolve this issue, turn off the unit and open a hot water spout somewhere in the home and leave it running. AO Smith. Use the AO Smith code guide to find the main causes and solutions for the problems of the following models: 110, 310, 510, 240, 340, and 540 series, for safety, convenience, and great savings. Lastly, if your heater is undersized try reducing your hot water usage. Each and every day at A. O. Smith, we are working on developing state-of-the-art solutions that are pushing new boundaries and paving the way in our industry. This error code indicates that there is a problem with your water heaters computer board. consumeraffairs, ao smith water heater repair questions solutions fixya, ao smith water heater troubleshooting home tips, ao smith water heater checkins water heaters installed, ao smith promax water heater troubleshooting wet head media, ao smith india buy water heaters amp water purifiers, a o smith water heaters review water heater hub, All rights reservedDisclaimer:The content published on hotwatertalk.com is not professional advice. This is a popular problem that a lot of AO Smith tankless water heater owners suffer from because this error code usually occurs when there is an ignition failure. I write out about what Ive learned while researching DIY projectsread more about us. Ignition failure is not an uncommon issue with water heaters and boilers, but its also highly recommended that you solve this issue by calling a technician to your home. Remove the top panel cover on the side of the unit by removing the screws that hold it in place. Defective Thermostat/Thermistor 3. Can it just be cleaned and restarted? Manual for 1500 - 3000 models. 3. If this error code has appeared on your AO Smith tankless water heaters LED screen, then this is a sign that you have set the incorrect settings for the dipswitch. This error should really be addressed by a technician, but you can also open up your water heater to check for any wire breakages or loose connections. However, sometimes the provided manuals and instruction guides are not very clear and if you need help addressing some error codes that are popping up on your AO Smiths tankless water heater, then we have got you covered. However, there are so many other working parts to an AO Smith water heater that are just as essential as the pilot to keep the unit running smoothly and effectively, such as the blower. A hot water heater does not drain off any used water, but only works as the supply unit for the water that is supplied to your home or business, however, there are a few reasons owners may find themselves needing to drain their unit to combat issues or just for general maintenance. Most of the time, this error occurs when there is a wire connection issue or a breakage, which can easily be fixed or replaced. The tools needed to solve the problems from below are mainly the screwdriver, manometer, and multi-meter. To solve this problem, you will need to find the correct settings for your water heaters model and reset them on the computer board. All parts are brand new in the original factory packaging and are guaranteed to fit and function properly. ReadyToDIY is the owner of this article. If your AO Smith Water heater display is not working, the display may need to be reset. SOLUTION: Check pressure switch wiring to see if it is correct. I am having a different issue. AO Smith Tankless Water Heater Problems And Troubleshooting Error Code: Remote 03, LED 031, Light Blinks One Time Inappropriate dipswitch setting. Using Rheem error codes to troubleshoot Rheem tankless water heaters. If the blower motor is defective than try replacing the blower assembly. AO Smith ProMax Water Heater Troubleshooting. Hi, I'm Eric the blogger behind ReadyToDiy.com. WaterHeater HUB 2021 - All Rights Reserved. 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