Rinnai REU-VA3237FFU Trouble Shooting for Common Issues, Accessing Operating Information

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Trouble Shooting for Common Issues

I don,t have any hot water when I open the tap.

Make sure there is gas, water, and electricity to the Rinnai water heater (power is turned on and the gas is turned on)

When I was using the hot water, the water got cold.

If you adjusted the flow from the tap to lessen it, you may have gone below the minimum flow required. The Rinnai Water Heater Requires a minimum flow rate to operate. (See the specification page for the flow rate of your model.) Decrease the temperature setting at the remote controller or increase the water flow.

White smoke comes out of the exhaust.

During colder weather when the exhaust temperature is much hotter than the outside air, the exhaust fumes condense producing water vapor.

When I open a hot tap, I do not immediately get hot water.

Hot water must travel through your plumbing from the Rinnai water heater to the faucet. The time period for hot water to reach your fixture is determined by the amount of water in the plumbing system between the water heater and the fixture, water pressure, and the flow rate of the fixture.

After I turn off the hot water tap, the fan on the Rinnai water heater continues to run.

The fan is designed to continue running for a short time after the flow of water stops. This is to ensure constant water temperatures during rapid starting and stopping, as well as exhausting any residual gas flue products from the unit.

Accessing Operating Information

Models MC-91 and MCC-91

To display the most recent error codes press and hold the “On/Off” button for 2 seconds. While holding the “On/ Off” button press the button. The last 9 error codes will flash one after the other. To exit this mode press the “On/Off” and button as before.

To display the water flow through the water heater press and hold the button for 2 seconds and without releasing the button press the “On/Off” button.

To display the outlet water temperature press and hold the button for 2 seconds and without releasing the button press the “On/Off” button.

Water Quality

Consideration of care for your water heater should include evaluation of water quality. If the water quality exceeds the target levels provided in the table, you may want to treat or condition the water.

*Source: Part 143 National Secondary Drinking Water Regulations

 

Maximum Level

 

 

Total Hardness

Up to 200 mg / L

 

 

Aluminum *

Up to 0.2 mg / L

 

 

Chlorides *

Up to 250 mg / L

 

 

Copper *

Up to 1.0 mg / L

 

 

Iron *

Up to 0.3 mg / L

 

 

Manganese *

Up to 0.05 mg / L

 

 

pH *

6.5 to 8.5

 

 

TDS (Total Dissolved

Up to 500 mg / L

Solids) *

 

 

 

Zinc *

Up to 5 mg / L

 

 

VA Series Indoor LS Manual

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Contents ANS Z21.10.3 CSA REU-VA3237FFUTable of Contents R98LSi SpecificationsConsumer Safety Information Safety DefinitionsSafety Behavior and Practices Safety Features Operating Instructions Features Available on Remote ControllersFeatures Description of OperationMC-91-1US & MCC-91-1US Remote Controllers ModelsBC-100V-1US Temperature Options Without a Remote Controller Setting the TemperatureModel Temperature Settings Available ºF Temperature RangesSetting the Sound Volume Voice Prompt Setting the ClockUsing the Water Smart / Bath Fill Function Setting the Water VolumeOverview Setting Controller to Mute Filling the TubModels MC-91 and MCC-91 Maintenance Error Codes Error Code TableError Fault Remedy Code Trouble Shooting for Common Issues Accessing Operating InformationWater Quality Rinnai Water Heater Flushing the Heat Exchange Error Code LC orGeneral Instructions Installation InstructionsAttachment of the Water Heater Clearances from ApplianceElectrical Connection Gas PipingGeneral Instructions Pipe Sizing Procedure Example Water Piping Pressure Relief ValveFreeze Protection Rinnai Water Heater Freeze Protection PipingQTY Recommended Piping for Basic InstallationFor this application Recommended Piping for Circulation SystemsYears On Heat Exchanger Years On Parts Optional Piping for Circulation SystemsVenting Instructions Intake / Exhaust GuidelinesCondensate Maximum Vent Length Vent Products Manufacturer Product PartsTermination Flue Terminal Clearances ANS Z21.10.3 CSA Area Where Bterminal is not PermitttedInside Corner Additional Clearances Vent TerminalFlue Installation Concentric Venting R50LSi, R75LSi, R94LSi Venting Clearances to Combustibles Flue Installation R98LSi, R98LSi-ASMEAir Intake Assembly Exhaust Pipe AssemblyVertical Terminations Horizontal with Concentric TerminationGuidelines High Altitude InstallationsConnecting Multiple Water Heaters Number of Connected Water Heaters Accessories NecessaryCable Lengths and Size Remote Controller InstallationConfigurations LocationSecuring screw Wiring hole 21/32 Operating Instructions For Your Safety Read Before OperatingTechnical Data Pressure Drop CurveOutlet Flow Data Space Heating R50LSi, R75LSi, R94LSi R98LSi, R98LSi-ASME DimensionsHOT Ladder DiagramVA LS Series Period of Coverage from date of purchase Warranty InformationLimited Warranty Consumer SupportWhat will Rinnai do? Rinnai’s other fine products 103 International Drive

REU-VA3237FFU specifications

The Rinnai REU-VA3237FFU is a high-efficiency gas continuous flow water heater designed to provide instant hot water on demand. It is particularly well-suited for households that require a reliable source of hot water while maximizing energy savings. This unit boasts impressive features that set it apart in the market, catering to both residential and commercial applications.

One of the standout characteristics of the REU-VA3237FFU is its energy-efficient design. With an impressive energy factor of 0.89, this model delivers exceptional performance, maximizing energy use and minimizing waste. The continuous flow technology means that there is virtually no wait time for hot water, making it ideal for busy households with multiple points of use.

The REU-VA3237FFU employs advanced temperature control technology. It features an intelligent digital controller that allows users to easily set their desired water temperature. This ensures consistent delivery of hot water at the desired temperature, enhancing comfort while also promoting safety by reducing the risk of scalding. The model also incorporates a safety lock function that can prevent accidental changes to the temperature setting.

In terms of durability and design, the Rinnai REU-VA3237FFU showcases high-quality build materials that contribute to its longevity. The stainless steel heat exchanger is resistant to corrosion, ensuring a long life expectancy and reliable performance over time. Additionally, the compact design makes it easy to install in tight spaces, whether indoors or outdoors, adapting to various installation environments.

Moreover, the Rinnai REU-VA3237FFU features a low NOx emission system, aligning with environmental standards and regulations. This eco-friendly technology makes it an excellent choice for environmentally conscious consumers looking to reduce their carbon footprint while enjoying the benefits of modern hot water systems.

The Rinnai REU-VA3237FFU is also equipped with a self-diagnostic system, which allows for easier maintenance and troubleshooting. This feature increases the unit's reliability by monitoring its performance and alerting users to any potential issues before they develop into significant problems.

In summary, the Rinnai REU-VA3237FFU is a standout continuous flow water heater that combines energy efficiency, durability, and advanced technology. With its smart temperature control, compact design, and environmentally friendly features, it is an outstanding choice for anyone seeking a dependable and efficient hot water solution.
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