Rinnai RS11TML - User Manual

Questions and Answers

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nicholasedwardsAug 20, 2025
What to do if my Rinnai RS11TML Water Heater displays Fault Code 11?
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  Tricia BaileyAug 20, 2025
  If your Rinnai Water Heater shows Fault Code 11, which indicates an ignition failure, try the following: - Turn off the control unit. - Check if the gas valve is open and the gas supply is not interrupted. - If the gas supply is normal, press the ON/OFF button to switch on the water heater. Open and close the hot water tap several times, waiting 10 seconds between each attempt. If the error disappears, the unit is operating normally.
S
Steven TaylorAug 22, 2025
What does Fault Code 10 mean on my Rinnai RS11TML Water Heater?
- C
  candace13Aug 22, 2025
  The fault code 10 indicates an abnormal air supply and flue exhaust. Please call service.
C
Chris JonesAug 25, 2025
Why is there no hot water supplied immediately by my Rinnai RS11TML Water Heater?
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  Toni FloydAug 25, 2025
  There are several possible reasons why you might not be getting hot water immediately: - Check that the gas supply is uninterrupted. - Ensure water flows normally from the tap. - Inspect the cold water filter for blockages. - Verify the power supply is normal. - Fully open the gas meter valve and the appliance's gas supply valve. - Fully open the cold water valve and the hot water tap. - After turning on the power, press the ON/OFF button on the front panel or remote control.
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Robert WaltonAug 27, 2025
What to do if the hot water temperature is too high in my Rinnai RS11TML?
- A
  Alexis BensonAug 27, 2025
  If the hot water temperature is too high, consider the following: - Check if the set hot water temperature is appropriate. - During hot weather, the supply water temperature might be exceptionally high, or the required water flow may be too low, causing higher hot water temperatures. Adjust the faucet or shower tap to mix with cold water. - Ensure the gas meter valve and the appliance's gas supply valve are fully open.
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Rachel HarperAug 28, 2025
Why is the hot water temperature too low on my Rinnai Water Heater?
- E
  Emily SmithAug 28, 2025
  If the hot water temperature is too low, consider the following: - Check if the set hot water temperature is appropriate for your needs. - During cold weather, the supply water temperature might be exceptionally low, or the required water flow may be too high, resulting in lower hot water temperatures. Reduce the hot water flow by adjusting the faucet or shower tap to achieve a suitable water temperature.
F
frankbarbaraAug 30, 2025
Why does my Rinnai Water Heater's fan keeps operating without use of hot water?
- M
  marshallmiguelAug 30, 2025
  After the burner is closed, the combustion fan will continue to operate for a short period. This is normal.
D
Daniel DavisAug 31, 2025
Why is my Rinnai RS11TML's ON/OFF indicator does not light up?
- B
  Brent GreenSep 1, 2025
  If the ON/OFF indicator is not lighting up, please check the following: - Ensure the power supply is normal. - After confirming the power supply, press the ON/OFF button on the front panel control.
M
mikegreerSep 2, 2025
Why water is discharged momentarily from the outlet of pressure relief valve of my Rinnai RS11TML?
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  ryansmithSep 3, 2025
  If the water pressure inside the appliance exceeds the design pressure, the pressure relief valve near the hot water outlet will open to release pressure. Once the pressure reduces to the design value, the valve will close.
D
Donald WeaverSep 4, 2025
What does Fault Code 12 mean on my Rinnai RS11TML Water Heater?
- C
  Chase LynchSep 4, 2025
  Fault Code 12 indicates that the flame failure device has been activated. Please call service.
W
Willie ShahSep 6, 2025
What does Fault Code 14 mean on my Rinnai RS11TML?
- L
  Linda OlsenSep 6, 2025
  Fault Code 14 indicates that the remaining flame safety device or heat exchanger overheat protection device has been activated. Please call service.

Summary

Important Safety Instructions

Safety Alert Levels and Symbols

Explains the meaning of danger, warning, and caution alerts and associated symbols.

Emergency Procedures and Appliance Malfunctions

Steps for gas leaks, abnormal operation, earthquakes, and fires.

Installation, Flue, and Fire Safety

Guidelines for safe installation location, flue gas discharge, and fire prevention.

Safe Appliance Usage and Maintenance

Covers control unit safety, operation tips, cleaning advice, and child supervision.

Product Descriptions

Front Panel Control Components

Details the components of the front panel control.

Temperature Display and Operation Indicators

Explains the temperature display and operation indicator light.

Temperature Setting and Power Controls

Describes the buttons for adjusting temperature and turning the appliance on/off.

Operating Instructions

Initial Operation Cautions

Cautions for first use, ignition, water flow sounds, and long non-use.

Scalding Prevention Measures

Instructions on checking water temperature to prevent burns.

First-Time Appliance Setup

Steps for checking operation and setting initial hot water temperature.

Appliance Operation Steps

Appliance Startup and Temperature Adjustment

How to start the appliance and adjust hot water temperature.

Using and Stopping Hot Water

Guidelines for using hot water and how to stop appliance operation.

Safety Devices and Maintenance

Safety Device Functions Overview

Details various safety devices and their roles.

Hot Water Temperature Adjustment Advice

Advice on adjusting temperature based on seasons and flow.

Appliance Cleaning and Regular Care

Instructions for cleaning the appliance and regular maintenance.

Troubleshooting

Fault Code Diagnosis and Solutions

Lists fault codes, reasons, and recommended remedies.

Hot Water Supply and Temperature Issues

Covers problems like no hot water, fluctuating flow, and temperature variations.

Control Panel and Operation Problems

Addresses issues with indicators, fan operation, flame failure, flue mist, milky water, pressure relief, and temperature settings.

Specifications

Rinnai RS11TML Specifications

General

Flow Rate	Up to 11 GPM
Energy Factor	0.82
Energy Efficiency	82%
Ignition Type	Electronic
Water Connection	3/4" NPT
Type	Tankless
Temperature Range	98°F - 140°F
Electrical Requirements	120 VAC
Warranty	12 years heat exchanger, 5 years parts, 1 year labor