Rinnai RV53E Trouble Shooting for Common Issues, Accessing Operating Information, Water Quality

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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.)

If you are experiencing issues with higher temperature settings, then Rinnai recommends reducing the temperature setting. Selecting a temperature closer to that which is actually used at the faucet will increase the amount of hot water being delivered to the faucet, due to less cold water mixing at the fixture.

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

 

 

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RV53i & RV53e Operation and Installation Manual

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Contents Result causing property damage, personal injury or death ANS Z21.10.3 CSATable of Contents Specifications ModelConsumer Safety Information Safety DefinitionsSafety Behaviors and Practices Safety Features Description of OperationHow to Set the Temperature Operating InstructionsTemperature Controller Settings Temperature Options Without a Temperature ControllerModel Temperature Settings Available ºF MCC-91 Temperature ControllerUsing the Water Smart / Bath Fill Function Setting the Water VolumeOverview Setting Controller to Mute Setting the ClockFilling the Tub Models MC-91 and MCC-91Maintenance Error Codes Code Fault RemedyCode Trouble Shooting for Common Issues Accessing Operating InformationWater Quality Flushing the Heat Exchanger Error Code LC or Circulating PumpInstallation Instructions General InstructionsClearances from Appliance Attachment of the Water HeaterRV53iRV53e Electrical Connection Gas PipingRV53i RV53ePipe Sizing Procedure Example Isolation Valves Installation Instructions Pressure Relief Valve Installation InstructionsPressure Relief Valve Maintenance Water PipingPressure Relief Valve Freeze ProtectionWhen the water heater or external piping has frozen Freeze Protection MethodsManual draining of the water heater Freeze Protection Piping KEYError Indication or Air Handler Control Switch RV53i Recommended Piping for Basic InstallationRinnai Water Heater Recommended Piping for Circulation Systems For this applicationInstallation requirements Venting Instructions RV53iIntake / Exhaust Guidelines CondensateMaximum Vent Length Vent ProductsManufacturer Product Parts Flue Installation Concentric Venting RV53i Description Canadian Installations US Installations Flue Terminal Clearances ANS Z21.10.3, CSAAdditional Clearances RV53iConnecting Multiple Water Heaters High Altitude InstallationsNumber Connected Accessories Necessary Water Heaters GuidelinesCanada only Temperature Controller Installation ConfigurationsLocation Cable Lengths and SizeTemperature Controller Mounting the Controller RV53iMounting the Controller RV53e For Your Safety Read Before Operating Operating InstructionsTechnical Data Pressure Drop CurveOutlet Flow Data Temperature Setting ReplacementSpace Heating PumpsDimensions RV53eLadder Diagrams Warranty Information Limited WarrantyWhat is covered? Consumer SupportHow do I get service? What is not covered? What will Rinnai do?Limitation on warranties State Regulations Important In the State of Massachusetts 248 CMR 4.00Instructions d’installation Instructions dutilisationSupport à la clientele Instructions dutilisation Temp. d’eauPlages de température avec un contrôleur de température Options de température sans contrôleur de températureModel Arrangements de température disponibles ºF Les températures suggérées sont deEntretien Instructions dinstallation Instructions généralesÉcartements par rapport à lappareil Fixation du chauffe-eauInstallation à altitude élevée Tuyauterie de gazInstructions générales Valve de dégagement de pression Instructions d’Installation Tuyauterie deauValve à Bille / Valve de dégagement de pression Qualité de leau Soupape de sûretéNiveau maximum Tuyauterie recommandée pour installation de base LégendeInstructions de ventilation RV53i Consignes pour aspiration/évacuationCondensat Longueur maximum de ventilation Produits de ventilationConstructeur Produit Pièces Espacements pour terminaison de cheminée ANS Z21.10.3, CSA Installation de conduit de cheminée RV53i Instructions dutilisation VanneMa ualmanuelleValveDiagramme en escalier FUS TherSupport à la clientèle Linformation de garantieGarantie limitée Quest-ce qui est couvert ?Que fait Rinnai pour exercer la garantie ? Limitation sur les garantiesU287-1821X0100