Rinnai Troubleshooting Guide for Water Heaters: Common Issues and Error Code 14

Page 14

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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VB Series Indoor LS Manual

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Contents REU-VB2528FFUD-US Table of Contents Specifications RL75i RL94i R98LSiSafety Behaviors and Practices Safety Features Consumer Safety InformationSafety Definitions Description of OperationTemperature Controller MC-91-1US & MCC-91-1USOperating Instructions Features Available on Temperature ControllersFeatures MC-91 MCC-91 MC-100 BC-100 MC-502 DescriptionModel Temperature Settings Available ºF How to Set the TemperatureTemperature Controller Settings Re-setting the Maximum Temperature RL75 and RL94 only Temperature Options Without a Temperature ControllerSetting the Sound Volume Voice Prompt MCC-91 Temperature ControllerOverview Using the Water Smart / Bath Fill FunctionSetting the Water Volume Filling the Tub Setting Controller to MuteSetting the Clock Models MC-91 and MCC-91Maintenance Error Codes Code Fault RemedyCode Water Quality Trouble Shooting for Common IssuesAccessing Operating Information Flushing the Heat Exchanger Error Code LC or Circulating PumpInstallation Instructions General InstructionsClearances from Appliance Attachment of the Water HeaterGeneral Instructions Electrical ConnectionGas Piping Pipe Sizing Procedure Example Pressure Relief Valve Maintenance Isolation Valves Installation InstructionsPressure Relief Valve Installation Instructions Water PipingFreeze Protection Piping RequirementsPressure Relief Valve Requirements Manual draining of the water heater When the water heater or external piping has frozenFreeze Protection Freeze Protection Piping KEYRecommended Piping for Basic Installation Rinnai Water HeaterRecommended Piping for Circulation Systems For this applicationCondensate Venting InstructionsIntake / Exhaust Guidelines Maximum Vent Length Vent Products Manufacturer Product PartsDescription Canadian Installations US Installations Flue Terminal Clearances ANS Z21.10.3, CSAAdditional Clearances Vent Terminal Inside CornerFlue Installation Concentric Venting RL75i, RL94i Exhaust Pipe Assembly Flue Installation R98LSi, R98LSi-ASMEAir Intake Assembly Venting Clearances to CombustiblesHorizontal with Concentric Termination Vertical TerminationsNumber Connected Accessories Necessary Water Heaters Connecting Multiple Water HeatersHigh Altitude Installations GuidelinesCanada only Location Temperature Controller InstallationConfigurations Cable Lengths and SizeMounting the Controller Outline of RemoteFor Your Safety Read Before Operating Operating InstructionsOutlet Flow Data Technical DataPressure Drop Curve Space Heating Temperature SettingReplacement PumpsDimensions RL75i, RL94i R98LSi, R98LSi-ASMELadder Diagram for RL75i and RL94i Ladder Diagram for R98LSi and R98LSi-ASME HOTConsumer Support Warranty InformationLimited Warranty What will Rinnai do? State Regulations Important In the State of Massachusetts 248 CMR 4.00Instructions d’installation Instructions dutilisationInstructions dutilisation Temp. d’eauModel Plages de température disponible ºF Plages de température avec un contrôleur de températureOptions de température sans contrôleur à distance Entretien NettoyageInstructions générales Écartements par rapport à lappareil Fixation du chauffe-eauInstructions générales Installation à altitude élevéeTuyauterie de gaz Tuyauterie deau Valve à Bille / Valve de dégagement de pression RL75i, RL94iQualité de leau Soupape de sûretéTuyauterie recommandée pour installation de base LégendeCondensat Instructions de ventilationConsignes pour aspiration/évacuation Longueur maximum de ventilation 12.5 m 10.7 mHorizontale Produits de ventilationConstructeur Produit Pièces Espacements pour terminaison de cheminée ANS Z21.10.3, CSA Nest PAS PermiseInstallation de conduit de cheminée RL75i, RL94i Montage du tuyau dévacuation Installation de conduit de cheminée R98LSi, R98LSi-ASMEEnsemble de prise dair Terminaisons horizontalesTerminaison horizontale concentrique Terminaisons verticalesInstructions dutilisation VanneMa ualmanuelleValveDiagramme en escalier RL75i, RL94i PhaseDiagramme en escalier R98LSi, R98LSiASME Phase TRE NEU RALQuest-ce qui est couvert ? Support à la clientèleInformations sur la garantie Combien de temps dure la couverture ?Que fait Rinnai pour exercer la garantie ? VB Series Indoor LS Manual VB Series Indoor LS Manual VB Series Indoor LS Manual VB2528FFU VB2735FFU VA3237FFU