Bosch Appliances 2400E LP, 2400E NG Troubleshooting, Water is too hot, Water is not hot enough

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Troubleshooting

6Troubleshooting

Warning: If you are unable to perform the tasks listed below, or need additional assistance please contact your original installer/licensed gas technician.

6.1Introduction

Many of the questions customers ask regarding operation of this unit can be answered by following the troubleshooting steps as outlined below. Visit our web site at www.boschhotwater.com for more detailed troubleshooting. For best results, perform each step before proceeding to the next. The suggested solutions may require that the cover be taken off. (See Page 5. Fig. 3).

6.2Burners do not ignite when hot water is turned on

1.If the display is blank, verify power to electrical outlet. (120VAC/60Hz properly grounded circuit required). Verify that the heater on/off switch is in the on (I) position.

2.Verify the fuses in the control unit are good.To access fuses, the control unit must be removed. Go to www.boschhotwater.com for a detailed service bulletin on this process. Two spare fuses are located inside lower access panel of control unit.

3.Make sure cold water inlet connection is plumbed to the right side of heater when facing unit. See Fig. 25.

4.A minimum of 0.8 gallons per minute (GPM) (3 l/m) is required to activate the heater. A quart container should fill in 20 seconds or less to activate heater.

5.Clean inlet filter screen per chapter 5.1.

6.Inspect the water path for obstructions. Make sure all showerheads, faucet aerators and whole house filters are clear of debris.

7.The heater activates when the water flow through the unit is at or above the required minimum of 0.8 GPM (3 l/m). A crossover creates back pressure on the water flowing through the heater. Therefore, a higher flow rate than normal is needed to force the heater to activate. To check for a plumbing crossover, shut off the cold water supply feed to the water heater. Then open all of the hot water taps served by the heater. Wait 10 minutes and check for water flow at taps. There should be no water flowing. Any continuous flow of water indicates a crossover is present and must be corrected. Consult a professional plumber for help in correcting a crossover. Failing single lever faucets and mixing valves are common causes of plumbing crossovers.

8.With the ON/OFF switch turned to OFF (O) position and the power supply cord unplugged, remove the

unit's front cover (See Page 5. Fig 3). Check wire connections between the water valve, control unit and electrode set. See chapter 9.2 for location of these parts.

6.3Water is too hot

1.Selected temperature on the unit is too high. To lower output temperature, see chapter 4.3.

2.Clean inlet filter screen per chapter 5.1.

3.Inspect the water path for obstructions. Make sure all showerheads, faucet aerators and whole house filters are clear of debris.

4.Confirm the heater's gas type coincides with the type of gas being supplied. See Fig. 2 for location of rating plate.

5.This model is designed for cold water supply only. For solar preheated applications, use of the model 125BS is recommended.

6.If the inlet cold water temperature is greater than 70°F due to geographic location avoid restrictive outlets. Clean all showerheads and faucet aerators. It may be necessary to upgrade to higher flow rate fixtures if allowable by local code.

7.In areas where water has a high mineral content, periodic descaling may necessary. See chapter 5.3 for directions.

8.Ensure that both temperature sensors are making contact and firmly mounted on their respective cold and hot water pipes. The hot water sensor should be located on the horizontal section of the hot water pipe before it exits the heater. The cold water sensor is located on the first horizontal section of pipe as the water comes into the heater.

6.4Water is not hot enough

1.Selected temperature on the unit is too low. To raise output temperature, see chapter 4.3.

2.Clean inlet filter screen. See chapter 5.1.

3.Inspect the water path for obstructions. Make sure all showerheads, faucet aerators and whole house filters are clear of debris.

4.Confirm the heater's gas type coincides with the type of gas being supplied. See Fig. 2 for location of rating plate.

5.Check inlet gas particle screen for blockage at gas inlet connection on bottom of unit.

6.Verify gas pressure is in accordance with specifications in chapter 3.8. A gas pressure reading is needed to proceed further. Contact your original installer or a local certified gas technician to obtain this reading.

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Contents NG Natural Gas LP Liquefied Petroleum LP Gas Intended for variable flow applicationsWhat to do if you smell gas For your safety IndexIndex FCC Features 2400 E Specifications Technical dataAppliance details Unpacking the 2400 E heater Venting General rules to follow for safe operationDimensions Dimensions and Minimum installation clearancesProper location for installing your heater Installation instructionsHeater placement and clearances Mounting installationCombustion air requirements Single pipe methodTwin pipe method Installation instructions Venting Vent material and specificationsVent lengths Minimum exhaust vent size and lengthVent Safety System Vent connections Exhaust vent connectionCombustion air inlet connection Room sealed installation Twin pipe External condensate drain installation not suppliedHorizontal runs Vertical terminationsVent terminations Interior masonry chimneysHorizontal terminations Exterior masonry chimneysInstallation instructions Description Minimum distance 720 608 Gas piping & connections For Natural GAS Measuring gas pressure Connecting ManometerStatic Pressure Test Operating Pressure TestHotcold Water connectionsRecirculation application Electrical connectionsPower For your safety, read before oper- ating your water heaterOperation instructions Operation instructionsOperation instructions Off Temperature selectionFlow/temperature chart Operation instructions Setting the water temperatureReset button Use of optional remote control accessoryOperation Program buttonMaintenance and service Annual maintenanceWinterizing for seasonal use Descaling using a pump Adjusting CO2Mineral scale build-up Once Gas Pressure is adequateAdjusting CO2 cover removed Measuring CO2 Cover InstalledFinal Readings Returning to ServiceDiagnostic menu Control board diagnosticsTroubleshooting TroubleshootingWater is too hot Water is not hot enoughHot water temperature fluctuates at tap Low water flow/pressureNoisy burner/heater during operation Lack of gas pressure. Inadequate gas pressure will Display Cause Solution Error code diagnosticsMeet desired temperature Check red wire connections at hot water Troubleshooting Display Cause SolutionNo flame ionization detected with water Heat exchanger Flame ionization rod or control unit may be Electrical diagram Electrical diagramFunctional scheme Functional schemeInterior components diagram and parts list Interior components diagram and parts listInterior components Components Diagram Components diagramDescription Reference Parts listProtecting the environment Protecting the environmentPacking ComponentsTwelve Year Limited Warranty BBT North America

2400E NG, 2400E LP specifications

Bosch Appliances has long been synonymous with quality and innovation in the kitchen appliance sector. Among their impressive lineup, the Bosch 2400E LP (Liquid Propane) and 2400E NG (Natural Gas) models stand out as prime examples of the brand’s commitment to performance and functionality.

Both the 2400E LP and 2400E NG are designed with user convenience and culinary excellence in mind. One of the most notable features of these appliances is their exceptional heat distribution, which ensures that food cooks evenly. This is particularly beneficial for grilling, where inconsistent heat can lead to unevenly cooked meals. The burners are crafted to provide high-efficiency performance while consuming less fuel, making them an economical choice for both home cooks and culinary enthusiasts.

Each model boasts a sleek, modern design that can seamlessly integrate into various kitchen styles. The stainless steel construction not only enhances aesthetics but also increases durability, ensuring the appliance can withstand the rigors of daily use while maintaining its appearance. The 2400E series also features a compact size, making it suitable for kitchens of all dimensions, including those with space constraints.

In addition to design and performance, safety features are a priority for Bosch. The 2400E models come equipped with sturdy flame control knobs, allowing users to adjust heat settings with precision, reducing the risk of accidental flare-ups. Moreover, the integrated ignition system is designed for reliability, ensuring that starting the unit is hassle-free.

Versatility is another hallmark of the Bosch 2400E LP and NG models. These appliances are compatible with a range of cooking accessories, from griddles to rotisserie attachments, providing multiple cooking methods to satisfy diverse culinary endeavors. The grease management system is another highlight, simplifying cleanup and maintenance after cooking sessions.

Another innovative technology in the Bosch 2400E series is the Smart Grilling feature, which includes temperature sensors that provide real-time feedback. This allows users to monitor cooking progress effortlessly, enhancing the overall cooking experience. The models also include a robust warranty, ensuring peace of mind for consumers.

In conclusion, Bosch Appliances’ 2400E LP and NG models represent a fine balance of innovation, safety, and style. With their powerful cooking capabilities, thoughtful design features, and user-friendly technologies, they stand as excellent choices for anyone looking to elevate their cooking experience.
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