Webapp Codecademy teaches you how to code using an interactive console, motivates you with badges, and walks you through lessons in a straightforward curriculum. Best of all, it's ...AWS today launched Amazon Honeycode, a no-code environment built around a spreadsheet-like interface that is a bit of a detour for Amazon’s cloud service. Typically, after all, AWS...Rinnai Error Code 15 Causes. Error 15 on a Rinnai tankless water heater indicates a problem with its venturi control, an essential component that regulates air and ... You can read the resistance across the sensor. Should be 12kOhms at 77*. Reverse acting, 7200 @ 100* & 23000 @ 50. If you remove the sensor and kinda toggle it back and forth it may free up and operate...for a while, but I'd have another sensor on the way. - The local building codes stipulating the installation rules. - The local building codes concerning the air intake and outlet systems and the chimney connection. - The regulations for the power supply connection. - The technical rules established by the gas utility company concerning the connection of the gas connection to the local gas mains.Rinnai Tankless Water Heater Beeping Code: Causes And Solutions. Beeping Code. Causes. Solutions. LC. Lime or scale buildup in heat exchanger. Flush the water heater or hire a professional. 10. Blocked condensate lines, internal air filter blocked, dirt and debris in combustion air and exhaust vents, blocked fans, etc.Rinnai Fault Code 14. Fault: Filter Blockage / Overheat. Applies to: Rinnai Indoor Gas Heater. Your Rinnai gas heaters are fitted with self diagnostics electronics. When a fault occurs, the heater will shut down and the fault with …Turn ON the gas supply. 7. Turn ON the 120 V power supply. 8. If a controller is installed, turn the unit ON with the controller. Select the maximum delivery temperature and open all available hot water taps at full. 9. Set the unit to “Forced Low” combustion by setting No. 7 dip switch of the SW1 set to ON (Fig. 3).Dynaboard built a low-code web application development tool to bring together product managers, designers and developers in a single tool. Dynaboard founder Alex Kern has been prog...Get FREE quotes from licensed Plumbers in your area today. Whether you need a new water heater, a sink repair, or a toilet fixed, We Can Help!Page 14 40 in. (1 m) from the front, and the area shown above the furnace in the figure to the left. Rinnai recommends 10 in. (254 mm) clearance from the top and on both sides for servicing. Figure 7: Service Clearances... Page 15 Manufactured Home Construction and Safety Standard, Title 24 CFR, Part 3280 and/or CAN/SCA Z240 MH Series, Mobile ...Check the burner test point pressure. Adjust the high pressure potentiometer (POT) on the PC board as required to the pressure shown in Table 1. Return the unit to normal operation by setting switches 7 and 8 of the SW1 set back to OFF (Fig. 6). Close all water taps. Turn OFF the gas supply and 120 V power supply.McDonald’s code of ethics is to conduct business ethically and within the letter and spirit of the law, according to the company’s website.Troubleshooting Steps: 1. Turn Off the Water Heater. 2. Inspect the Gas Valve. 3. Clean Burners. 4. Check Ignition Components. 5. Verify the Gas Supply flowing inlet pressure at the incoming test point on the Rinnai water heater should read 5” W.C. - 10.5” W.C. on natural gas and 8” W.C. - 13.5 W.C. on propane gas. If the pressure is lower, the gas supply is inadequate and the unit will not operate correct operation/sizing and correct as required. Gas Pressure Setting 2 Rinnai Corporation EX17CT, EX22CT Manual Table of Contents Important Safety Information Safety Definitions This is the safety alert symbol. This symbol alerts you to potential hazards that can kill or hurt you and ... National Fuel Gas Code, ANSI Z223.1/NFPA 54 and/or Natural Gas and Propane Installation Code, CSA B149.1. 9. …You might think that postal codes are primarily for sending letters and packages, and that’s certainly one important application. However, even if you aren’t mailing anything, you ...Faulty ignitor: Code 11 is an ignition problem. Therefore, one of the root causes could be a defective ignitor that no longer functions. Gas supply issues: If the ignitor is in good shape, a lack of gas supply is another thing to consider. Without any gas, there’s nothing for the heater to ignite.Jan 10, 2024 · Struggling with Error Code 14 on your Rinnai tankless water heater? Watch our step-by-step DIY guide to troubleshoot and fix the issue with your unit's therm... This code is the only one on a Rinnai tankless water heater that will still allow the unit to keep running. How Do I Reset My Rinnai Heater? Press and hold the connect button located on your unit. High Efficiency View Energy Guide. RE199iN is the perfect combination of high efficiency, comfort and value in a natural gas non- condensing tankless water heater from Rinnai. Ideal for small to medium homes or remodels. Only the size of a small suitcase, is easy-to-install, reliable, and perfect for indoor locations; Rinnai products provide ... 1. Identify the error code: In this case, Error Code 14 indicates a thermal fuse problem. 2. Check gas type: Make sure that the gas type of the unit matches the gas type that is being used. If not, switch to the correct gas type. 3. Check for restrictions in air flow:Get FREE quotes from licensed Plumbers in your area today. Whether you need a new water heater, a sink repair, or a toilet fixed, We Can Help!4.2/5 stars from 94 reviews. Enjoy an endless supply of hot water with the RUCS65iN, our Super-High Efficiency condensing natural gas tankless water heater from Rinnai. Only the size of a small suitcase, the RUCS65iN is compact, easy-to-install and perfect for indoor locations. Uniform Energy Factor (UEF): 0.85.This is an in-depth guide on how to fix the thermal fuse on a Noritz N-0751M tank less water heater.Rinnai Fault Code 14. Fault: Over heat thermal fuse. Applies to: Rinnai Infinity 26 Touch REU-AM2626, WDLInfinity 26 REU-AM2626, WDInfinity 20 REU-AM2024, WDInfinity 16 REU-AM1620WD, Infinity 12 REU-AM1220 WD, B26 REU-A2626 WB, B20 REU-A2024WB B16 REU-A1620WB Units. Your Rinnai continuous flow water heater has a self …code. Priority Indicator Indicates that this controller is setting the water temperature. ... flowing inlet pressure at the incoming test point on the Rinnai water heater should read 4” W.C. - 10.5” W.C. on natural gas and 8” W.C. - 13.5 W.C. on propane gas. ... 14 Thermal Fuse 16 Over Temperature Warning 52 Modulating Solenoid Valve ...You might think that postal codes are primarily for sending letters and packages, and that’s certainly one important application. However, even if you aren’t mailing anything, you ...It was cleaned twice by plumber in trying to address this code. But over the 5 years, I cleaned it every 18 months. Maybe not enough. Thanks . T. ... Contact Rinnai support to troubleshoot and have a quality electrical test meter ready to go. ... Nov 14, 2017 Messages 2,376 Reaction score 1,211 Location Lafayette, CA.Struggling with Error Code 79 on your Rinnai tankless water heater? Watch our step-by-step DIY guide to diagnose and fix the issue, and get your hot water fl...Ensure Rinnai approved venting materials are being used. ... No Code (Nothing happens when water flow is activated.) ... a resistance reading of 14 ~ 16. Voltage ...Step 1: Check the Gas Supply Valve: Locate the gas supply valve connected to your Rinnai Tankless Water Heater. Ensure that the valve is fully open. Sometimes, valves might accidentally get closed, restricting the gas flow. Step 2: Inspect the Gas Line: Carefully examine the gas line for any kinks, bends, or damage.flowing inlet pressure at the incoming test point on the Rinnai water heater should read 5” W.C. - 10.5” W.C. on natural gas and 8” W.C. - 13.5 W.C. on propane gas. If the pressure is lower, the gas supply is inadequate and the unit will not operate to specification. Check the gas meter regulator and pipework forWhen your Rinnai tankless water heater has a problem, an error code is shown on the display panel. Frequently, there's a few steps you can take to troubleshoot the issue, you may even be able to get your tankless back up and running. But at bare minimum, you'll have an idea of the problem before you call for repairs.flowing inlet pressure at the incoming test point on the Rinnai water heater should read 5” W.C. - 10.5” W.C. on natural gas and 8” W.C. - 13.5 W.C. on propane gas. If the pressure is lower, the gas supply is inadequate and the unit will not operate correct operation/sizing and correct as required. Gas Pressure SettingRE199iP is the perfect combination of high efficiency, comfort and value in a propane gas tankless water heater from Rinnai. Ideal for small to medium homes or remodels, compact, easy-to-install, reliable and perfect for indoor locations; Rinnai products provide peace of mind with warranties that surpass the competition. ... 14.05 in / (357 mm ...No Ignition (Heating Not Turning On) Check that the gas is turned on at the water heater, gas meter, or cylinder. If the system is propane, make sure that gas is in the tank.The Running a low volume of water through the water heater to prevent freezing When the water heater or external piping has frozen KEY Rinnai Water Heater Freeze Protection Piping Recommended Piping for Basic Installation Rinnai Water Heater KEY VB Series Outdoor LS Manual 25 Recommended Piping for Circulation Systems KEY Rinnai Water …Get FREE quotes from licensed Plumbers in your area today. Whether you need a new water heater, a sink repair, or a toilet fixed, We Can Help!Rinnai Circ-Logic RL94i Brochure & Specs (6 pages) LUXURY SERIES TANKLESS WATER HEATERS. Brand: Rinnai | Category: Water Heater | Size: 2.66 MB. Rinnai Circ-Logic RL94i Pdf User Manuals. View online or download Rinnai Circ-Logic RL94i Manual.Rinnai tankless water heater code 10 means that there is an overheating issue. This is usually due to a blockage in the venting system, which can be caused by lint, debris, or even animals nesting in the vents. Other causes include a defective sensor, incorrect gas pressure, or a stuck check valve.FC510P FC Model Series. FC510P. Fan Convectors. 4.9/5 stars from 16 reviews. FC510P is a flexible, easy to install vent free fan convector with 10KBTU Propane Gas from Rinnai is the perfect solution for rooms and spaces that are hard to heat. Warranty 3 year on Parts.Jul 1, 2023 ... Noritz Boiler Error Code 14 #noritz #boiler # ... Rinnai Tankless Water Heater Error Code 14. Smart Inland•945 views.A code 10 on your Rinnai tankless water heater can mean that your flue is blocked or that it was not installed correctly. One of the ways to check to see if the problem is with your flue is to disconnect the pipe and turn the water heater on.code. Priority Indicator Indicates that this controller is setting the water temperature. ... flowing inlet pressure at the incoming test point on the Rinnai water heater should read 4” W.C. - 10.5” W.C. on natural gas and 8” W.C. - 13.5 W.C. on propane gas. ... 14. Move SW8 in DIPSW1 to OFF. Figure 5. 15. Close hot water taps. 16. Turn ...Page 14 40 in. (1 m) from the front, and the area shown above the furnace in the figure to the left. Rinnai recommends 10 in. (254 mm) clearance from the top and on both sides for servicing. Figure 7: Service Clearances... Page 15 Manufactured Home Construction and Safety Standard, Title 24 CFR, Part 3280 and/or CAN/SCA Z240 MH Series, Mobile ...using Rinnai conversion kits. (See page 62) RHFE-556FTRA RHFE-556FTRA RHFE-556FA RHFE-556FA MODEL GAS TYPE DIAMETER OF ... Code, ANSI Z223.1 or the Canadian Installation Code, CAN/CGA-B149. 2. For information on gas type, see data plate on the appliance. ... 14. Do not use this room heater if any part has been under water. …V53DeP is the perfect combination of high efficiency, comfort and value in a propane gas tankless water heater from Rinnai. Ideal for small to medium homes or remodels, compact, easy-to-install, reliable and perfect for outdoor locations; Rinnai products provide peace of mind with warranties that surpass the competition. ... 14.0 in / (356 mm ...do not attempt to bypass the thermal fuse as it is a critical safety device to prevent further damage to the unit or property in the event of an extreme overheat ...Rinnai Condensing Water Heaters: Review and Buying Tips. Checking Rinnai condensing water heaters from the RUR, RU, RUCS, and RUS series, including advantages and benefits of Rinnai tankless SE and SENSEI series.This beeping will repeat every 5 minutes. Eventually the appliance will turn off and display fault code. 14 on the control panel display. To clean the ...Heater Rinnai RCE-229A Owner's Operation And Installation Manual 28 pages Silent servant convector vent-free space heater Heater Rinnai RCE-460PTR Service Manual 71 pages4.5/5 stars from 2 reviews. Rinnai E110CRP Residential Condensing combination, propane gas boiler is compact, wall mounted, and designed for easy installation as a retro-fit to traditional less efficient boilers and can deliver whole house heating and domestic hot water heating for homes with up to two bathrooms.A code of conduct is necessary so members of an organization or group understand the standards they will be expected to uphold when interacting with each other and others outside t... 14 Thermal Fuse • Check for restrictions in air flow around unit and vent terminal. • Check for low water flow in a circulating system causing short-cycling. • Check for foreign materials in combustion chamber and/or aust piping. • Check for clogged heat exchanger. 16 Over Temperature Warning • Check sensor wiring for damage. 14 Thermal Fuse • Check for restrictions in air flow around unit and vent terminal. • Check for low water flow in a circulating system causing short-cycling. • Check for foreign materials in combustion chamber and/or aust piping. • Check for clogged heat exchanger. 16 Over Temperature Warning • Check sensor wiring for damage.Jun 20, 2022 ... A follow-up to my 2018 video on how to fix my Rinnai RL94i that was producing an Error Code 10 while abruptly turning off heat during ...Rinnai Vent-Free Convectors push heat to the farthest reaches of the room, evenly warming larger spaces and maximizing cost-savings. ... 14.05 in / (357 mm) Product Weight: 42.1 lb / (19.1 kg) Gas Type: Natural Gas: …code. Priority Indicator Indicates that this controller is setting the water temperature. ... flowing inlet pressure at the incoming test point on the Rinnai water heater should read 5” W.C. - 10.5” W.C. on natural gas and 8” W.C. - 13.5 W.C. on propane gas. ... 14. Move switch 8 of Dip SW1 to OFF. Figure 5. 15. Close hot water taps. Troubleshooting Steps: 1. Turn Off the Water Heater. 2. Inspect the Gas Valve. 3. Clean Burners. 4. Check Ignition Components. 5. Verify the Gas Supply Summary: To fix Rinnai code 11, first inspect the gas line and check the gas pressure. Clean or replace the igniter and flame sensor, then inspect the venting. Additionally, check the inlet and outlet valves, as well as the pressure relief valve. Finally, bleed the line and call a professional if necessary.Rinnai Vent-Free Convectors push heat to the farthest reaches of the room, evenly warming larger spaces and maximizing cost-savings. ... 14.05 in / (357 mm) Product Weight: 38.5 lb / (17.5 kg) Gas Type: Natural Gas: Installation Type: Indoor: Recirculation Capable: Yes: Uniform Energy Factor (UEF) 0.81:Are you tired of the Rinnai Tankless Water Heater Code 12 error interrupting your hot water supply? We've got your back! In this step-by-step guide, we'll sh...4.4/5 stars from 62 reviews. Enjoy an endless supply of hot water with the SENSEI™ RU160eN Super High Efficiency Plus condensing tankless water heater from Rinnai. Only the size of a small suitcase, the natural gas RU160eN model is compact, easy-to-install and perfect for outdoor locations. Uniform Energy Factor (UEF): 0.95.View and Download Rinnai Energysaver RHFE-1004T service manual online. Energysaver RHFE-1004T gas heater pdf manual download.Hi I am having trouble with a Rinnai direct vent wall heater RHFE-1004f (note it is a room heater, not a hot water heater). The unit shuts off and displays error code 14.After flushing water heater, the procedure to reset LC codes: •Push the two switches (A and B) on PC Board at the same time for five seconds. •Water heater will return to normal operation and LC# count returns to 0. This hard reset procedure is not in owners/installation manual or tech sheet.Easy to install, and able to be connected to solar or heat pump installations, they are our premium hot water cylinder. Constructed from high grade duplex stainless steel and packed with features to benefit specifiers, installers and homeowners, making them exceptional value for money. The 250 L and 300 L cylinders have the option of a second ...flowing inlet pressure at the incoming test point on the Rinnai water heater should read 5” W.C. - 10.5” W.C. on natural gas and 8” W.C. - 13.5 W.C. on propane gas. If the pressure is lower, the gas supply is inadequate and the unit will not operate to specification. Check the gas meter regulator and pipework for 6 Rinnai Corporation EX38C Manual. Getting to know your New Heating Appliance. Operating Instructions. GAS CONNECTION 1/2” NPT. PLASTIC TIE FOR AIR INLET. POWER CORD. PLUG 120V AC. AIR FILTER. VENT TERMINAL COMBUSTION / EXHAUST. EXHAUST PIPE. COMBUSTION AIR INTAKE HOSE. AIR FILTER. PIPE STOPPER. THERMISTOR. BENT ELBOW. WARM AIR OUTLET. HUMIDIFIER can be found under the front cover in the plastic holder. If missing contact Rinnai for proper gas pressure setting procedures. 14.. Other items that could cause code 10's; a. Bad fan motor bearing b. Bad wiring harness to fan motor from PC board c. Bad PC board d. Improper dip switch settings 4.7/5 stars from 249 reviews. EX22CTP is a quick, flexible installed, ductless, propane gas, direct vent wall furnace from Rinnai; the perfect heating solution that seeks out cold spots and within seconds begins to gently heat the room or space for maximum comfort. Warranty 10 yrs on Heat Exchanger/ 5 years on Parts/ 2 Year on Labor.Sep 24, 2023 · No Gas Supply or Inadequate gas pressure. Step 1: Check Gas Line Valves. Step 2: Check Gas in the tank. Step 3: Maintain water heater pressure specifications. Step 4: Address Undersized Gas Systems. Loose Gas connections or Improper venting (Recirculation of Exhaust Gas) Step 1: Understand the Issue. Dynaboard built a low-code web application development tool to bring together product managers, designers and developers in a single tool. Dynaboard founder Alex Kern has been prog...Rinnai 98rchpi showing code 14 when turning on the showerhead, however when using other faucets for water like basin and kitchen work normal. if I turn on the basin hot water first and then turn on th … 2 Rinnai Corporation ES38 Manual This appliance may be installed in an aftermarket, permanently located, manufactured home (USA only) or mobile home, where not prohibited by local codes. This appliance is only for use with the type of gas indicated on the rating plate. This appliance Rinnai is a popular brand of tankless water heaters that provides efficient and reliable heating solutions for homes and businesses. However, like any other electronic device, Rinnai tankless water heaters can also encounter issues or errors.Additionally, issues with the water heater’s venting system can lead to the manifestation of Rinnai Code 11. A proper venting system is necessary to provide an adequate supply of combustion air. Checking for any blockages in the venting system and making sure that the vents are properly installed with sufficient clearance can help fix the …4.6/5 stars from 173 reviews. Enjoy an endless supply of hot water with the SENSEI™ RU199eN Super High Efficiency Plus condensing tankless water heater from Rinnai. Only the size of a small suitcase, the natural gas RU199eN model is compact, easy-to-install and perfect for outdoor locations. Uniform Energy Factor (UEF): 0.95.Code 14 will be displayed on the controller if the PCB does not see continuity through the thermal fuse circuit (thermal fuse and overheat switch #1) during the start sequence. You will need to attempt to operate the water heater in order for this code to be posted. Troubleshooting: 1.AWS today launched Amazon Honeycode, a no-code environment built around a spreadsheet-like interface that is a bit of a detour for Amazon’s cloud service. Typically, after all, AWS...May 4, 2020 · Learn how to fix the common error 11 problem on a Rinnai Direct Vent heater Locate the power supply to your Rinnai tankless water heater and turn it off. This can usually be done by flipping the switch on the circuit breaker box or unplugging the unit. Wait for a specific period. Once the power supply is turned off, wait for at least 10 seconds before proceeding to the next step. flowing inlet pressure at the incoming test point on the Rinnai water heater should read 5” W.C. - 10.5” W.C. on natural gas and 8” W.C. - 13.5 W.C. on propane gas. If the pressure is lower, the gas supply is inadequate and the unit will not operate to specification. Check the gas meter regulator and pipework for Locate the power supply to your Rinnai tankless water heater and turn it off. This can usually be done by flipping the switch on the circuit breaker box or unplugging the unit. Wait for a specific period. Once the power supply is turned off, wait for at least 10 seconds before proceeding to the next step.4.4/5 stars from 460 reviews. Enjoy an endless supply of hot water with the RUCS75iN, our Super-High Efficiency condensing natural gas tankless water heater from Rinnail. Only the size of a small suitcase, the RUCS75iN is compact, easy-to-install and perfect for indoor locations. Uniform Energy Factor (UEF): 0.9.Check that the gas is turned on at the water heater, gas meter, or cylinder. If the system is propane, make sure that gas is in the tank. Ensure appliance is properly grounded.Want to learn how to code but don't know where to start? Check out this exhaustive list of educational coding resources. Trusted by business builders worldwide, the HubSpot Blogs a... CANADIAN DEALS! RINNAI TANKLESS - Prices have dropped and there are decent deals to be had now!. Our prices verses the exact same model at Homedepot.ca . RUR199iN - $2,899 - Nat Gas Compare at $3853 - SAVE $954 Rinnai Tankless Water Heater Beeping Code: Causes And Solutions. Beeping Code. Causes. Solutions. LC. Lime or scale buildup in heat exchanger. Flush the water heater or hire a professional. 10. Blocked condensate lines, internal air filter blocked, dirt and debris in combustion air and exhaust vents, blocked fans, etc.
Page 14. 14. Rinnai Tankless Water Heater ... codes or, in the absence of local codes, with the ... in the absence of local codes, in accordance with the National .... Spectrum scottsbluff ne
Sep 26, 2023 · Troubleshooting of Rinnai Tankless Water Heater Code 10. Condensate Line Gets Blocked. The Rinnai tankless water heater has a condensate pipe that drains the condensate produced during operation. Rinnai Tankless Water Heater Beeping Code: Causes And Solutions. Beeping Code. Causes. Solutions. LC. Lime or scale buildup in heat exchanger. Flush the water heater or hire a professional. 10. Blocked condensate lines, internal air filter blocked, dirt and debris in combustion air and exhaust vents, blocked fans, etc.1.1K. 49K views 2 years ago UNITED STATES. Rinnai Tankless Water Heater Flush, Descaling & Maintenance Service. Fix/Repair Rinnai Error Code 11, 12, 14. Flushing/Descaling - Ignition Rods... flowing inlet pressure at the incoming test point on the Rinnai water heater should read 5” W.C. - 10.5” W.C. on natural gas and 8” W.C. - 13.5 W.C. on propane gas. If the pressure is lower, the gas supply is inadequate and the unit will not operate correct operation/sizing and correct as required. Gas Pressure Setting This repair guide will teach you how to repair and maintain your Rinnai Water Heater. Whether it's error codes, troubleshooting, or repair tips, the Applianc...flowing inlet pressure at the incoming test point on the Rinnai water heater should read 5” W.C. - 10.5” W.C. on natural gas and 8” W.C. - 13.5 W.C. on propane gas. If the pressure is lower, the gas supply is inadequate and the unit will not operate correct operation/sizing and correct as required. Gas Pressure SettingAre you tired of the Rinnai Tankless Water Heater Code 12 error interrupting your hot water supply? We've got your back! In this step-by-step guide, we'll sh...Troubleshooting of Rinnai Tankless Water Heater Code 10. Condensate Line Gets Blocked. The Rinnai tankless water heater has a condensate pipe that drains the condensate produced during operation.About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright ...Dublin, VA. May 28, 2020. #1. My Rinnai RL75i tankless water heater for error 14 a couple months ago and stopped heating, after some research I found the code meant it was overheating. I flushed the water heater for a couple hours and that seemed to fix my problem until today, error code 14 again.May 4, 2020 · Learn how to fix the common error 11 problem on a Rinnai Direct Vent heater View and Download Rinnai Energysaver RHFE-1004T service manual online. Energysaver RHFE-1004T gas heater pdf manual download.Struggling with Error Code 14 on your Rinnai tankless water heater? Watch our step-by-step DIY guide to troubleshoot and fix the issue with your unit's thermal fuse.Rinnai Fault Code 14. Fault: Filter Blockage / Overheat. Applies to: Rinnai Indoor Gas Heater. Your Rinnai gas heaters are fitted with self diagnostics electronics. When a fault occurs, the heater will shut down and the fault with a pair of digits will be displayed on the display screen.Cutting NOTICE the intake hose may result in noise. Air intake hoses Rinnai Corporation EX17CT, EX22CT Manual... Page 14 Hose Joint - 1.5 in (38 mm) inner dia. Hose Joint - 2.0 in (50 mm) inner dia. Pipe Stopper A Pipe Stopper B Pipe Clamp 2 sets 3 sets 4 sets Wall Fixture Screw A Screw B Rinnai Corporation EX17CT, EX22CT Manual...14 Thermal Fuse • Check for restrictions in air flow around unit and vent terminal. • Check for low water flow in a circulating system causing short-cycling. • Check for foreign materials in combustion chamber and/or exhaust piping. • Check for clogged heat exchanger. 16 Over Temperature Warning • Check sensor wiring for damage. Before calling for repair, check to see if the code resets when you perform a hard reset, by shutting the power off to the water heater and then turn it back on. If the code reappears, the water flow servo valve did not close during the bath fill function. Shut off the water flow and call a professional to troubleshoot the problem for you. .