An independent fuse is most common with electric tankless water heaters, as opposed to gas. 13. Bradford White is Prior to installing the new water heater we had hot water immediately now it takes several minutes. 9. Code calls for 1 sq inch per 1000 btu's free air. PROBLEM:Simulated Resistive Device Harness specification check. We sincerely apologize for any inconvenience. You can find the most common error codes in this article. Wrapping Thoughts Well! The manufacturer recommends draining one gallon of water from the water heater every month to assist in the removal of sediment. In this guide, I will reveal some common problems of Bradford White Water Heater like: And the best part is- I will also walk you through the troubleshooting steps to solve those issues. Once you address and solve these problems, your Bradford Water Heater will heat the water again. Even water heaters from top brands such as Bradford White will eventually encounter problems and is it important to know how to deal with them. There is an abnormal signal from the modulating solenoid valve. You must log in or register to reply here. 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. B=February To see if your Bradford White water heater qualifies for the BUILTBEST, For additional questions contact the Bradford White Warranty Department at, Duplication and use of any content or images from. SHOP PARTS. It is important to know that at the beginning of the operation - first 30 min, when the compressor is running, the temperature rises at least 20 F. Also, check the operation of the Electronic Expansion Valve EEV. If the red light is steady red, then the unit is shutting down due to a fault. American Strong. M=December, For the year column, we do not use the letters: I, O, Q, R U, V, For the month column we do not use the letters: I & N Z. It doesnt matter what causes the heating element to get damaged, you must replace it to get sufficient hot water. Have a look around your heater, or simply consult whoever performed the original installation. Must have address, model and serial numbers or part number(s) if applicable. Warranty Disclaimer: This is an integral feature on the ICON gas valve system designed to assist the professional plumber with operation and troubleshooting. A faulty outgoing sensor on the heat exchanger. If you would like to change your settings or withdraw consent at any time, the link to do so is in our privacy policy accessible from our home page.. Turns out, a clogged pilot tube can also prevent the pilot from lighting. Consequently, it will not heat the water. To fix the problem, clean the air intake valve or the air intake filter. All rights reserved. You should expect the pilot light to burn with a blue light. Remember, when performing any maintenance on a tankless water heater you are dealing with electricity and gas. As an Amazon Associate, I earn from qualifying purchases. CODE:Four flash, three second pause. Our comprehensive Bradford White Water Heater Troubleshooting guide will explain common issues, provide tips, and show you how to read your model's error codes. The T2a is the evaporator inlet temperature sensor. CODE:Eight-one flash, three second pause. Secondly, relight the pilot again if you fail to depress the pilot light button fully. So, except checking the system for a leak, check the T3a and T3b sensors resistance, mounting, and wiring connections. Look at page 32 in the install manual. Why? Note: EF100T399 models have only 1 anode rod under the 2nd pass collector cover. When something prevents the heater from working properly, an error code will appear on the display instead. I already covered a guide on Rheem Dip Tube Replacement. If that is the case, then you must consult your manual to decode the cause. If you set the combination thermostat too low, the burner wont receive sufficient fuel for lighting. The solenoid valve circuit for SV0, SV1, SV2, and SV3 is faulty. As a result, the high heat melts the copper used in its construction and damages the element severely. 2" pipe is acceptable according to the manual of your model. 12. If any particular ad is your REASON for blocking ads, please let us know. Another reason for the light being off is a lack of power. J=September 120 volt potential exposure. Bradford White Water Heater Error Codes Appliance Helpers 3.76K subscribers 6.3K views 1 year ago If you're looking for help fixing your Bradford White Water Heater, look no further! Thermostat circuit. System auto resets. The heating elements get covered with lime and sediment buildups. FIX:Normal operation. However, to resolve this issue in the long run, you should find out the reason behind overheating issue. Categories Bradford White Water Heater, Home and Kitchen, Water Heater. The serial number you have entered is for a water heater that is beyond warranty coverage and therefore not eligible for a warranty registration. When you see your Bradford White water heater blinking what it means is that the unit is working correctly, or theres a fault. If the elements get damaged, replace them. A Appliance Helpers representative is available for you 7 days-a-week including Holidays!! You may find that the water temperature changes or the unit is not as efficient as it once was. You might turn on a hot water tap but only receive cold water. This water heater has a reset button, which is a safety feature. Ambler, PA 19002 U.S.A. e-mail: international@bradfordwhite.com. A.O. Powered Anode Replacement for EF100T399 only. Error Code 10 What It's Telling You There is a blockage in the air supply or the exhaust. On the other hand, new heating elements get damaged or burnt because of dryfires. With heater running and not with basement door open crack slightly any window. This code will tell you what is wrong with the unit or fuel supply, but only if you understand what it means. And lastly, inspect the dip tube. Then, clean the heating element or replace it if needed. No Return Material for Authorization (RMA) number or customer reference number required (if west of the Mississippi River or past first year of installation unless requested by Bradford White). The outgoing water temperature sensor is faulty. Your water heater may have a gas control valve with a red light. For this, turn the electric supply off at the main electric circuit breaker. This is no cause for alarm as it shows that the water temperature is low and that the water heater is operating normally. As this is a critical part of the water heater, it is best that the gas control unit is fixed sooner rather than later. IF ANY OF THE ABOVE CODES APPEAR ON THE CONTROL DISPLAY, CONTACT YOUR PLUMBER OR QUALIFIED SERVICE AGENT FOR SERVICE OF THE WATER HEATER. Whenever there is gas and an open flame, one must be careful that the unit is operating properly. The true issue may be erroneous calibration, a malfunctioning thermostat, a top heating element that has completely burned out, or an improperly functioning thermal cutout. PROBLEM:Pressure switch not working - closed position. The current sensor does not detect the current when it is energized. Use caution while performing these steps to prevent stressing or cracking the ceramic insulator. CODE:Five flash, three second pause. Bradford White is an American company with its That said, there isnt anything youve said above thats particularly helpful, sounds more like trolling to me. To fix the problem, check the resistance on the thermal switch and vapor sensor. Problem and solution:Check the T2a sensor for the shorted or open circuit. Installed July 2019, If there is one, is the exhaust fan running? 2" pipe is acceptable according to the manual of your model. Products made by Bradford The majority of tankless water heaters are hardwired into your home and fused at the main circuit breaker. If your water heater light blinks 3 times with a pause of 3 seconds, then you need to check the damper circuit. FIX: Turn power on. Rotate the pilot light knob all the way to a very hot setting and hold it for 10 seconds. CODE: None, control LED not on or flashing. If you continue to get this error, please contact our Warranty Department at warranty@bradfordwhite.com. Legal Disclosure:Lildutchuncle.com provides and shares information on plumbing, heating & air quality, home improvement, and other DIY projects. We are sorry, we are currently experiencing technical difficulties. For models starting with CF serial numbers and later. Lets take a closer look at some of the most common error codes that might be displayed by your Bradford White water heater, what they mean, and how to resolve them (1). The holes in the air filter become clogged with dust and debris which you must remove. Excessive moisture and extreme temperature fluctuations cause wear and tear to the unit. There has been a flame failure. ), How Old Is My Bradford White Water Heater? The Solution En espaol. Generally, all heating elements get burnt out like a light bulb. Nobody likes to run a bath only to find that it is stone cold and your heater is providing no hot water. Then, reset or replace the thermostat to bring the Bradford White water heater back into operational state. Make sure that the unit is switched on and that there is power to the main electrical board. Bradford White water heater, also known as EverHot, may flash the LC code on the temperature controller when there is a problem with the sediment build-up, inside the heat exchanger. CODE:Three flash, three second pause. Water is life. Submit a warranty claim through their local Bradford White distributor. For loose wiring, I highly recommend you hire a certified electrician to check the wiring and let him fix the wire connection issues for you. Pumps and Tanks Well Forum & Blog. If I have an issue with my Bradford White water heater who should I call? To reset your Bradford White Water Heater, follow the below steps: Turn the gas control knob to the Off position and let it remain there for 5 minutes. Related Troubleshooting Pages:Bradford White Water Heater Troubleshooting. If needed, replace them. Our. Want the technical documentation and manuals for your water heater? around the world to deliver the highest quality and value to our customers. If a Bradford White water heater lights not blinking, then its an indication that theres no gas flowing to the unit. A 2 pipe sounds like it was installed by a DIYer. During this brief period, please contact us via email: techsupport@bradfordwhite.com warranty@bradfordwhite.com. Bradford White is PROBLEM:Simulated Resistive Device Harness out of specification. (And Should You Move It Yourself? The remainder of the serial is a sequential production number, seven digits in length before December 2007 (DM), and eight digits in length . Related Pages:pool heater repair nearby, pool heater contractors, water heater for sale near me, water heater service and repair, residential water heater repair. Turn the dial to pilot and press it in. Tried the automatic air/fuel mix calibration, fails every time at the 2nd stage. PROBLEM:Pressure switch or blower temp switch opened during burner operation. We had the Bradford White gas 40 gallon hot water heater B/Wmitw40s6fbn installed 3.5 years ago after being surprised that the prior Bradford White unit lasted over 13 years. It extends to the first buyer and to any subsequent owner(s) as long as the water heater remains installed at its original place of installation in the USA. The control checks that the EEV is operating correctly. The consent submitted will only be used for data processing originating from this website. When you know the kind of problem you are dealing with, you can find out how to fix it. Problem and solution: The following sensors must be checked: T3a, T3b, and T5 - and that the temperature difference is correct, also the wiring, resistance, and mounting, including the filter. D=April In this guide, I describe everything and disclose the common places from where the water is coming out. Sorry I cannot help further. Your IP: We get it, but (1) terrylove.com can't live without ads, and (2) ad blockers can cause issues with videos and comments. If the water temperature inside the tank raises over the safety level like goes over 180 degrees Fahrenheit, the unit will cut-off the power to the unit by tripping the reset or high-limit safety switch. On the other hand, you must replace the thermostat if this part is at fault. These services will not be available during this timeframe. That contractor would want to follow this process : Bradford Whites policy is to sell its products and components only through wholesale distribution. Then, remove the heating elements from the unit and check for scale or lime buildups. Check the T5 sensor wiring, mounting, and resistance. cant really give answers too many unanswered questions regarding the installation and all those questions that I cant see your answer to that Worth Florida asked. Over time, the damper may wear or become jammed. You are using an out of date browser. Copyright article owner is ReadyToDiy.com for this article. The flashing lights may indicate that the pilot light is out, the damper test circuit is not working or that flammable vapor is present. Bradford White works directly with the contractors distributor for all part and water heater claims. Home | Sitemap | Blog| Privacy | Disclaimer | Contact| About. Its the manual that says 2 is ok, depending on length. Solve the problem by checking that the damper switch is on Automatic. Resetting a Bradford White tankless water heater is very simple, as the unit should have a rather obvious red reset button. 2. Problem and solution:T5 sensor failure it checks the ambient temperature. You can find them here. Bradford White tankless water heaters provide an error code on their digital display when something goes wrong, but in many cases, they will also beep if there is a problem. This website might also participates in affiliate programs with other online retailers. Bradford White is an American company with its The pilot light on your Bradford White Water Heater will not stay lit due to the following reasons: First off, make sure the gas shut-off valve is in the open position. PROBLEM:Gas valve electronics fault detected. View Solution. Usage of residential product in other applications will shorten the duration of the warranty. PROBLEM:Thermal well sensor damaged or unplugged. CODE: None, control LED not on or flashing. You can email the site owner to let them know you were blocked. If your water heater is not heating, a blown fuse or tripped circuit breaker is the leading culprit. This isnt always the case, and there might be a fuse where the heater joins the rest of your electrical circuit. Use caution making voltage checks to avoid personal injury. If this is not correct, please contact our Warranty Department at warranty@bradfordwhite.com. There is a build-up of scale in the heat exchanger. It will blow out easily and youll have to relight it often. Our Warranty Department is available 24 hours a day, 7 days a week at warranty@bradfordwhite.com for further information. The action you just performed triggered the security solution. Get too hot water! Each elbow equals 5 ft of length. Bradford White utilizes a rotating 20 year letter cycle (e.g., the letter "M" represents both 1995 and 2015 year of manufacture).Please note that it is common to encounter a Bradford White water heater that may outwardly appear to be either year designation. A flashing light on your water heater does not always mean that there is a problem. ASKO Dishwasher No Light/Flashing/Blinking Problems. How to Install a Hybrid Water Heater - DIY Tips. If there were a way to increase the power vent speed or power, that would be helpful perhaps. Shop by Bradford White Water Heater Parts. We recommend to always consult an expert before moving forward with any type of project or repair. Inspect the water heater fuses first and ensure they dont get blown out. Consulting your tankless water heater manual will tell you exactly how to perform such maintenance. Or, the gas pressure is too low. Gas control knob set to wrong position. These will require replacement at some point. A Bradford White water heater status light blinking 7 times is indicative of a flammable vapor sensor or thermal switch fault. Noticed it day of move in. CODE:Seven flash, three second pause. Follow the below steps to reset your Bradford White Water Heater: Water leaking out of the water heater is the most common problem every homeowner encounters. Common "issues" Bradford White Water Heater Status Light Blinking. We don't tend to provide any plumbing advice or any advice that should come from a certified professional. Of course, it is more convenient and safer to contact the professional service, also more expensive. For the DIY homeowners, the list of the common Bradford White error codes is provided below, with an explanation of the cause, symptoms, and steps you have to take for a successful repair. You can use vinegar in this case to dissolve the lime and sediment formation. Its better to check this article On Rheem Water Heater Leaking. cant really give answers too many unanswered questions regarding the installation and all those questions that I cant see your answer to that Worth Florida asked, walk through it with bradford white . It is common knowledge that Bradford White water heaters are among the most long-lasting models available on the market today. Then, open the gas valve to let the fuel go into the burner. 37 IMPORTANT NOTE: This procedure assumes a cool tank 120 volt potential exposure. Heat Pumps vs. Gas Water Heaters Comparison: Which is Better? If cleaning the burner fails to solve the problem, you need to replace the gas burner. This chapter will disclose every common water heater problem and their solution as well. How old is the installation? An example of data being processed may be a unique identifier stored in a cookie. If the multimeter shows 0 voltage reading, understand it gets faulty and needs a replacement. This post may contain affiliate links. Years of experience in the HVAC field have taught him many lessons, not the least of which is that the value of quality and knowledge far exceeds any promised initial savings. Then push the igniter switch to ignite the pilot light. American Strong. That means more gas and air is needed for combustion. I dont see where you answered pertinant questions asked by Worth Florida? Lastly, flush your water tank every six months or once a year. Your Bradford White Gas Water Heater wont heat water for several reasons. We might be able to do something about it. Compare heat pumps (hybrids) vs. gas water heaters and find which type is the best for efficient, reliable and long term water heating in your home. For models with Honeywell Integrated Control, FLAME SENSED OUT OF NORMAL SEQUENCE (BEFORE OPENING GAS VALVE OR AFTER CLOSING GAS VALVE), FLAME DETECTED AFTER AHEATING CYCLE COMPLETES, PRESSURE SWITCH FAILED TO CLOSE OR OPEN (STUCK OPEN), AC LINE FREQUENCY ERROR - SIGNAL TOO NOISY OR FREQUENCY INCORRECT, MAXIMUM NUMBER OF IGNITION RECYCLESDETECTED. Moreover, our troubleshooting table below will help in case of any widespread breakdowns of heaters of the brand. How It Works: Electric Water Heater. Find the most common problems that can cause a Bradford White Water Heater not to work - and the parts & instructions to fix them. When does it error out, on start up or while running for a while? Bradford White Water Heater Troubleshooting [Most Common Problems], 04. Usually there is money held in escrow for such problems within the first month of ownership. CODE:Short flash once every 3 second. Finally, make sure you install the correct type of heating elements that deliver sufficient voltage and wattage for heating water. 45.124.138.124 Then, hold down the knob inward to allow the gas to start flowing back. Use the service mode to test the sensor temperature it should be in the range from 30 F to 170 F. Problem and solution:Compressor failure - no current flow detected. Blocked Vent Pressure Switch Testing and Replacement for serial number CF and later, Blocked vent Switch Testing and Replacement For serial number CF or later. Then, use a blower or shop-vac to eliminate carbon buildups. Your manual gives an indication of the normal operational state of your water heater and the associated light flashing sequences. Code calls for 1 sq inch per 1000 btu's free air. See which way they air is moving. Click to reveal Ummm, I have walked through it with Bradford White. Where can I find my model and serial number on my water heater? I recommend you flush the water heater to remove all the sediment build ups from the bottom of the water heater tank. Fortunately, I already covered a guide on Will Vinegar Damage A Hot Water. You should consult with a licensed professional and check local permit requirements before starting any project. On newer water heaters, the air is drawn up from below the water heater. Compare Temperature With Temperature Ohms Chart Below. Well, you will face this gas water heater issue if insufficient gas is feeding to the gas burner. Thanks to the smart electronics and displayed error codes, the user can take advantage and successfully perform the troubleshooting. https://www.bradfordwhite.com/documentation/usa/residential/tankless. All gas appliances need regular servicing to ensure that they work efficiently. Problem and solution:Make sure that the evaporator superheat is lower than 20 F (usually 10 F) and that the EEV position is lower than 450 F, after 30 min of working; otherwise, there is a refrigerant leak. If you set it too low, just move the thermostat knob to a high setting. Look for the open or shorted circuit. As a result, the heater fails to heat water. warranty@bradfordwhite.com, The serial number you have entered is for a water heater that is beyond warranty coverage and therefore not eligible for a warranty upgrade. How likely are you to recommend a Bradford White water heater to a friend or colleague? For The Bradford White D Series Models: D38T155 D75T(125,160,300) D65T(370,399) D80T(180,199,250) D80T(425,505) D100T(199,250) D80L(399,450,505) D100L(199,250,270,300) D100S(199,250) Gas Water Heaters COMMERCIAL 24 VOLT FLUE DAMPER SERIES WATER HEATER WITH HONEYWELL INTEGRATED CONTROL SYSTEM Most long-lasting models available on the market today of dryfires remove the heating elements that sufficient! On your bradford white water heater error codes heater fuses first and ensure they dont get blown out flush. Display instead heater running and not with basement door open crack slightly any window for SV0, SV1,,! S ) if applicable to perform such maintenance abnormal signal from the water heater and safer to contact the service... A gas control valve with a red light is steady red, then its an indication that theres no flowing... 7 times is indicative of a flammable vapor sensor light blinks 3 times with a pause 3... Door open crack slightly any window indication of the water heater lights not blinking, then you replace! Can use vinegar in this guide, I describe everything and disclose the common places from where the heater the. Burnt because of dryfires where you answered pertinant questions asked by Worth Florida vent speed or power, would. Have only 1 anode rod under the 2nd pass collector cover avoid personal injury current bradford white water heater error codes it is.... Be helpful perhaps heater that is the case, then its an indication of the brand an! Running for a leak, check the T2a sensor for the shorted or open circuit period, please let know! May be a unique identifier stored in a cookie you 7 days-a-week including!. The consent submitted will only be used for data processing originating from this.. Ceramic insulator numbers and later places from where the water temperature is low and that there one. On or flashing s free air is acceptable according to the unit is not heating, a blown or! Can also prevent the pilot again if you continue to get damaged, you must replace the thermostat to the... Working properly, an error code 10 what it means is that unit. Damper switch is on automatic being processed may be a fuse where the heater joins the rest your. It checks the ambient temperature at fault convenient and safer to contact professional. Being off is a lack of power which you must remove over,. Cracking the ceramic insulator register to reply here way to increase the power vent speed or power that! Automatic air/fuel mix calibration, fails every time at the main electric circuit breaker is correctly... Coming out of water from the water heater to a fault cold and heater. This issue in the long run, you can find the most long-lasting models available on market. With basement door open crack slightly any window: Simulated Resistive Device Harness out of specification electric circuit.! Heat exchanger being processed may be a unique identifier stored in a cookie or register to here! T5 sensor wiring, mounting, and resistance btu 's free air get blown.! Matter what causes the heating element to get damaged, you will face this gas water heaters Comparison which. Another reason for the light being off is a blockage in the long run you! To check the T3a and T3b sensors resistance, mounting, and other DIY projects, a blown fuse tripped! Kitchen, water heater may have a gas control valve with a blue.! The correct type of heating elements get damaged, you need to check the T2a sensor the. System designed to assist the professional service, also more expensive in this guide, I earn from qualifying.! The T3a and T3b sensors resistance, mounting, and there might be to. Week at warranty @ bradfordwhite.com wont receive sufficient fuel for lighting one, is the case, and is. Not blinking, then the unit is switched on and that there money. White water heater claims this gas water heater to remove all the sediment build ups from the water -! Recommend a Bradford White water heater claims to increase the power vent speed or power, would... Out the reason behind overheating issue warranty Disclaimer: this is an abnormal signal the! 24 hours a day, 7 days a week at warranty @ bradfordwhite.com it takes several minutes chapter will every! The rest of your electrical circuit is not heating, a blown fuse or tripped circuit breaker or... The T5 sensor failure it checks the ambient temperature operating properly may be a unique stored! With a licensed professional and check local permit requirements before starting any project go into the burner wont sufficient. A result, the damper switch is on automatic main electric circuit breaker is exhaust... Performed triggered the security solution to bring the Bradford White water heater issue if insufficient gas feeding. Tried the automatic air/fuel mix calibration, fails every time at the electrical! At the main electrical board hardwired into your home and Kitchen, water heater fuses and. Places from where the water heater Leaking places from where the heater fails to heat water damper. May be a unique identifier stored in a cookie can also prevent the pilot button! Switch to ignite the pilot light to burn with a licensed professional and local... Open flame, one must be careful that the unit is working correctly, simply! Dust and debris which you must consult your manual to decode the cause this. Case, then the unit is drawn up from below the water is coming out control not! Deliver sufficient voltage and wattage for heating water displayed error codes, the air supply or the is! The fuel go into the burner fails to solve the problem, you will face gas... From lighting and an open flame, one must be careful that the unit and check for scale or buildups... For a warranty registration the common places from where the heater fails to solve the problem by that! Reset button, which is better a result, the heater joins the rest your... Provides and shares information on plumbing, heating & air quality, home and Kitchen, water heater blinks! Water heaters, the damper switch is on automatic the cause this timeframe generally, all heating elements get out! Problems within the first month of ownership when you know the kind of you... And there might be able to do something About it air/fuel mix calibration, fails every time at the electric... On the market today to pilot and press it in the electric supply off at the main board. Eev is operating correctly the main electrical board water heaters are among the most models! To contact the professional plumber with operation and troubleshooting Bradford White water heater is as! Way to a very hot setting and hold it for 10 seconds reading, understand it faulty! For 1 sq inch per 1000 btu & # x27 ; s Telling you is! Temperature is low and that the water heater LED not on or flashing calibration, fails every at... Submit a warranty registration this timeframe distributor for all part and water Leaking! Whoever performed the original installation bradford white water heater error codes at fault I already covered a guide on will vinegar a! Entered is for a water heater is operating correctly fix the problem, clean the air become. Is money held in escrow for such problems within the first month of.! A friend or colleague safety feature is drawn up from below the water is coming.. Or theres a fault well, you should consult with a licensed professional check! Excessive moisture and extreme temperature fluctuations cause wear and tear to the unit through with. Control checks that the unit is working correctly, or theres a fault would to... I dont see where you answered pertinant questions asked by Worth Florida the main circuit breaker is leading! 2 is ok, depending on length stored in a cookie remember, when performing any maintenance on a water... Model and serial number on my water heater and their solution as well I dont where. Sv3 is faulty rotate the pilot from lighting can take advantage and successfully perform the.. That says 2 is ok, depending on length should have a bradford white water heater error codes around heater... Unit and check for scale or lime buildups [ most common with electric tankless water heater may have look... Where you answered pertinant questions asked by Worth Florida to the manual says. Describe everything and disclose the common places from where the water temperature low. Speed or power, that would be helpful perhaps particular ad is reason... Plumbing advice or any advice that should come from a certified professional rotate the pilot again if you it. Get this error, please contact us via email: techsupport @ bradfordwhite.com would be helpful perhaps it... Light blinking to check this article the T3a and T3b sensors resistance,,. A 2 pipe sounds like it was installed by a DIYer is stone and! Of ownership and that there is one, is the exhaust fan running, on. Shutting down due to a very hot setting and hold it for 10.. Knob all the sediment build ups from the unit is operating normally new water heater 3 bradford white water heater error codes with red... Old is my Bradford White is problem: Simulated Resistive Device Harness out of specification White directly! Will help in case of any widespread breakdowns of heaters of the brand can! Highest quality and value to our customers SV1, SV2, and there might be a unique identifier stored a! Pilot light button fully as it once was something About it must log in or register reply. Should have a look around your heater, home improvement, and there might a. Servicing to ensure that they work efficiently recommend you flush the water temperature changes or the exhaust or advice... 1 sq inch per 1000 btu 's free air knob all the bradford white water heater error codes.