S
Sara JonesSep 2, 2025
What to do if Rinnai INFINITY 20 Water Heater does not start?
- NNatalie FullerSep 2, 2025
If your Rinnai Water Heater isn't starting, make sure the power is on at the unit and check that the isolation valves are open.
To Next PageTo Next PageWhat to do if Rinnai INFINITY 20 Water Heater does not start?
If your Rinnai Water Heater isn't starting, make sure the power is on at the unit and check that the isolation valves are open.
What to do if my Rinnai Water Heater starts then shuts down immediately?
If your Rinnai Water Heater starts and then shuts down immediately, ensure the power is still on. Also, check that the gas isolation valves at the unit and the gas meter are fully open. Finally, make sure to open your hot water tap fully.
How to fix Rinnai INFINITY 20 Water Heater no ignition/no gas supply?
If your Rinnai Water Heater won't ignite due to a potential lack of gas supply, first, verify that the gas is turned on both at the water heater itself, and at the gas meter or cylinder.
What to do if Rinnai INFINITY 20 Water Heater water doesn't flow after a power interruption during bath fill?
If your Rinnai Water Heater experiences a power interruption while filling a bath and water doesn't flow when power is restored, turn off all hot water taps, then press the On/Off button twice.
What to do if Rinnai Water Heater starts then the water goes cold?
If your Rinnai Water Heater starts but the water then goes cold, check that the power is still on. Open your hot water tap further, or try another tap. Note that your unit requires a minimum flow of 3L/min to operate.
What to do if Flame Failure or Low gas flow in Rinnai Water Heater?
If you experience flame failure or low gas flow in your Rinnai Water Heater, first check that the gas is turned on at both the water heater and the gas meter. Then, check that nothing is obstructing the flue outlet. Finally, ensure you turn on the gas supply to the water heater.
What to do if Rinnai INFINITY 20 starts then shuts down immediately?
If your Rinnai Water Heater starts and then immediately shuts down, verify that the power is still on. Also, check that the gas valve at the unit and the gas meter are fully open. Ensure that your hot water tap is fully open as well.
What to do if there is a power interruption during bath fill with my Rinnai INFINITY 20 Water Heater?
If there's a power interruption during a bath fill and water won't flow on power reinstatement with your Rinnai Water Heater, turn off all hot water taps and press the On/Off button twice.
Why does my Rinnai INFINITY 20 start and then the water goes cold?
If your Rinnai Water Heater starts and then the water goes cold, verify that the power is still on. Also, try opening your hot water tap further.
What to do if my Rinnai INFINITY 20 Water Heater starts then the water goes cold?
If your Rinnai Water Heater starts but the water goes cold, verify that the power is still on. Additionally, try opening your hot water tap further.
General| Type | Tankless |
|---|---|
| Temperature Control | Digital |
| Category | Water Heater |
| Maximum Flow Rate | 20 L/min |
| Minimum Flow Rate | 2.4 L/min |
| Energy Factor | 0.82 |
| Ignition System | Electronic |
| Flow Rate | 20 L/min |
| Energy Efficiency | High |
| Installation | Indoor |
| Gas Type | Natural Gas |
| Temperature Range | 37°C to 50°C |
| Ignition Type | Direct Electronic Ignition |
| Warranty | 12 years on heat exchanger, 3 years on parts and labour |
Essential safety information regarding the dangers of heated water and burn prevention measures.
Key safety warnings, operational tips, and warnings about hot water flow and flue outlet safety.
Details on factory pre-set temperatures and whether they can be changed by an authorized person.
Explains temperature ranges for controllers and available combinations of Universal and Deluxe models.
Identifies components, turning on, and adjusting temperature for the MC-91Q controller.
Guidance on transferring priority and operating multiple controllers simultaneously.
Overview of BC-100V features, indicators, and steps to turn it on.
Procedures for adjusting audible settings and configuring the controller's clock.
How to set water temperature and important safety checks before use.
Detailed steps for using the automatic shower saver and bath fill features.
Instructions for stopping fill functions and combining controller types.
Identifies MC-100V components, functions, and steps for turning it on.
Procedures for adjusting audible settings and configuring sound options for the kitchen controller.
Procedures for setting the clock and modifying the water temperature.
Explains the Smartstart® system, its benefits, and how to activate the preheat function.
Lists common error codes, their remedies, and troubleshooting steps for units without controllers.
Covers regulations, appliance location, flue clearances, water supply, and mounting.
Details on condensate pipe materials, installation, length, and discharge requirements for specific models.
Steps for installing water controllers, connecting cables, and fitting specific models.
Procedures for testing the unit, confirming delivery temperatures, setting gas pressure, and using a checklist.
