How to Reset Rinnai Gas Heater: A Hot Water Troubleshooting Guide

Rinnai is the name you know for hot water in Australia and for good reason – it’s the brand you can rely on to keep that water hot! But even the most reliable systems can have problems. This guide combines real life experience with technical knowledge to help you troubleshoot and fix common Rinnai hot water issues.

Know Your Rinnai

Before we get into the issues, get to know your Rinnai gas heater. Get familiar with the control panel, temperature settings and any model specific features.

Additionally, checking the gas meter is crucial to ensure that the gas supply is reliable and safe for optimal performance.

Understanding Your Rinnai Hot Water System

Understanding your Rinnai hot water system is crucial for effective troubleshooting and maintenance. Rinnai hot water systems are designed to provide a continuous supply of hot water, ensuring comfort and convenience in your home. These systems come in various models, including gas and electric options, each tailored to meet different needs.

The system consists of several key components, including the water heater, gas supply, and power supply. The water heater is the core of the system, responsible for heating the water to the desired temperature. The gas supply ensures that the heater has the necessary fuel to operate, while the power supply provides the electricity needed for the system’s controls and safety features.

Familiarising yourself with these components and their functions can help you identify potential issues and perform basic troubleshooting. For instance, knowing where the gas valve is located and how to check if it’s fully open can save you time and effort when dealing with a no-hot-water situation. Similarly, understanding the role of the power supply can help you diagnose issues related to the system’s control panel or digital monitor.

By taking the time to understand your Rinnai hot water system, you can ensure that it operates efficiently and reliably, providing you with the hot water you need when you need it.

Rinnai Hot Water Issues and Solutions

1. No Hot Water

If your Rinnai isn’t producing hot water, check:

• Gas supply: Is the gas turned on? Are there any supply issues?
• Ignition: Look for Error Code 11, it’s an ignition problem.
• Temperature settings: Have the settings been changed accidentally?

Effective hot water system troubleshooting can help identify the root cause of the issue and restore hot water supply quickly.

2. Lukewarm Water

For not hot enough water:

• Check the thermostat settings.
• Check the gas valve is fully open.
• Heat exchanger or scaling due to hard water?
• Ensure that the flow of hot water to the hot taps is not restricted, as this can affect the overall water temperature.

in which case you’ll need a good hot water repair plumber.

3. System Turns Off Suddenly

Sudden shutdowns can be caused by:

• Overheating (Error Code 16)
• Ventilation issues (Error Code 10)
• Unspecified system faults (Errors 70, 71 & 72)

4. Water Leaks

Small water leaks are normal, but excessive leaking could mean:

• Faulty valves
• Loose fittings or connections
• Tank corrosion (in extreme cases)

How to Reset Your Rinnai Gas Heater: Model Specific Instructions

Resetting your Rinnai heater will often fix minor issues. Here’s how:

1. Find the control panel on your Rinnai gas heater.
2. Switch off the power to the unit.
3. Wait 1-2 minutes.
4. Switch the power back on.
5. If your model has a reset button, press and hold for 3-5 seconds.

For model specific instructions:

• Rinnai Infinity models: Press the ‘On/Off’ button twice.
• Rinnai Deluxe models: Hold the ‘Priority’ button for 5 seconds, then press ‘On/Off’.
• Rinnai Portable Gas Heaters: Turn the control dial to ‘Off’, unplug the unit, wait 10 seconds, then plug it back in and turn on.

If these steps do not resolve the issue, it may be time to consider making a service call to a professional technician.

Rinnai Gas Heater Error Codes

Error codes will give you an idea of what’s wrong:

• Error 11: Ignition failure. Check gas supply and igniter.
• Error 12: Flame failure. Check gas pressure and clean flame rod.
• Error 14: Overheat. Let the unit cool and ensure proper ventilation.
• Error 16: Over temperature warning. Check blocked exhaust or air intake.
• Error 32: Outgoing water temperature sensor fault. May need professional help.
• Error 61: Combustion fan failure. Check for obstructions or call a technician.

Understanding these error codes is crucial for diagnosing issues with your Rinnai hot water heater and ensuring it operates efficiently.

You might even have a new electric hot water system model with a remote, which can be used – but bear in mind that most hot water temperature in Australia is restricted due to the scalding risk.

Pre-Reset Checklist

Before you reset your Rinnai heater do this:

1. Check gas supply: Gas valve fully open.
2. Check power supply: Heater properly plugged in or wired.
3. Check water connections: Look for leaks or blockages.
4. Check for error codes: Note any on the control panel.
5. Listen for unusual noises: During operation.
6. Recent changes: Any recent changes or weather events?

Ensure that the hot water taps press is functioning correctly to avoid any issues during the reset process.

Safety First: Precautions for Resetting Your Rinnai Gas Heater

Always safety first when dealing with gas appliances:

1. Switch off the gas before any reset or maintenance.
2. Make sure the area around the heater is well ventilated.
3. Never reset a damaged or gas leaking heater.
4. Wait for the unit to cool before touching any parts.
5. Wear appropriate safety gear (gloves) when handling the unit.
6. Keep flammable materials away from the heater.

Advanced Troubleshooting

Advanced troubleshooting involves a more in-depth analysis of your Rinnai hot water system to identify complex issues that may not be immediately apparent. This level of troubleshooting often requires specialised tools and expertise, and it’s recommended to seek the help of a professional plumber if you’re not comfortable with DIY troubleshooting.

Here are some advanced troubleshooting techniques to consider:

• Checking the Gas Supply: Ensure that the gas supply is sufficient and properly connected. This includes verifying that the gas valve is fully open and that there are no kinks or blockages in the gas lines.
• Inspecting the Power Supply: Make sure the power supply is functioning correctly. Check that the heater is properly plugged in or wired and that there are no issues with the electrical connections.
• Analysing Error Codes: Pay attention to the error codes displayed on the digital monitor. These codes can provide valuable insights into what might be wrong with your system. Refer to the error code guide in this article for specific troubleshooting steps.
• Checking the Inlet Water Filter: Ensure that the inlet water filter is clean and free of debris. A clogged filter can restrict water flow and affect the system’s performance.
• Inspecting the Heating Cycle: Observe the heating cycle to ensure it’s functioning correctly. This includes checking for any irregularities in the ignition process, flame stability, and water temperature regulation.

By performing these advanced troubleshooting steps, you can identify and address more complex issues with your Rinnai hot water system, ensuring it operates efficiently and reliably.

Repair and Replacement Options

If your Rinnai hot water system is not functioning correctly, you may need to consider repair or replacement options. Repairing your system can be a cost-effective solution, but it’s essential to ensure that the repair is done correctly to avoid further issues. Replacement options may be necessary if your system is old or damaged beyond repair.

Here are some factors to consider when deciding between repair and replacement:

• Age and Condition of Your System: Older systems may be more prone to breakdowns and less energy-efficient. If your system is over 10-15 years old, it might be time to consider a replacement.
• Cost of Repair vs. Replacement: Compare the cost of repairing your current system with the cost of a new one. If the repair costs are high and the system is old, replacement might be a more economical choice in the long run.
• Energy Efficiency and Performance: Newer models of Rinnai hot water systems are often more energy-efficient and offer better performance. Upgrading to a new system can result in lower energy bills and improved hot water delivery.
• Availability of Replacement Parts and Labor: Ensure that replacement parts for your current system are readily available. If parts are hard to find or expensive, it might be more practical to replace the system.

It’s recommended to consult a professional plumber to determine the best course of action for your Rinnai hot water system. They can assess your system and provide recommendations for repair or replacement, ensuring that your hot water needs are met efficiently and effectively.

Call a Pro

While many can be fixed at home, some need expert help. Call a licensed technician if:

• You smell gas or think you have a leak.
• The heater keeps shutting off or displaying error codes.
• There’s water leakage or damage to the unit.
• You hear unusual noises or see visible flame issues.
• You’re not comfortable doing maintenance or resets yourself.
• The unit hasn’t been serviced in over a year.

Maintenance: Minimise Resets

Maintenance will prevent many problems:

1. Annual professional service.
2. Clean or replace air filters as per manufacturer’s instructions.
3. Keep the area around the heater clean and clear of debris.
4. Check and clean exhaust vent periodically.
5. Check water hardness and consider a water softener if needed.
6. Inspect visible pipes and connections for wear and corrosion.

Resetting Rinnai Gas Heaters

Portable

1. Switch off and unplug the unit.
2. Wait 10 minutes for the unit to cool.
3. Check and clean air filter if needed.
4. Plug back in and switch on.

Continuous Flow

1. Switch off at the switchboard.
2. Wait 5 minutes.
3. Switch back on.
4. Press the ‘On’ button on the temperature controller.

Storage Tank

1. Find the reset button (usually near the thermostat).
2. Press and hold for 3-5 seconds.
3. If still not working, switch off power and gas, wait 30 minutes, then switch back on and try again.

FAQs: Rinnai Gas Heater Reset

How often should I need to reset my Rinnai gas heater?

Rarely. If you need to reset frequently there’s an underlying issue that needs professional attention.

Will a reset clear all error codes?

No. Some error codes will remain after a reset and need further action.

Can I reset my Rinnai heater if it’s still hot?

It’s best to wait until the unit has cooled before attempting a reset for safety.

Will a reset void my warranty?

Standard resets shouldn’t affect your warranty but check your warranty terms for conditions.

Why did my Rinnai gas hot water system just suddenly turn off?

The main cause of a sudden but apparently-routine shutdown of your Rinnai gas hot water system is overheating – so you might be seeing Error Code 16.

Gas Supply Troubleshooting

If you think you have gas supply issues:

1. Check the main gas valve is fully open.
2. Check there are no kinks in the gas lines.
3. Listen for gas flow when a hot water tap is turned on.
4. Check other gas appliances to see if they’re getting gas to the property.
5. If you think you have a gas leak, switch off the supply and call your gas provider.

Additionally, ensure that the hot tap is functioning correctly to maintain a continuous flow of hot water.

The Priority Button

The Priority button is useful for managing hot water in different areas of your home:

• It sets the water temperature for that controller.
• Only one controller can have priority at a time.
• To change priority turn off all hot water taps and press the Priority button on the desired controller.
• The Priority indicator will light up on the active controller.
• Use this feature to manage hot water temperature in different areas of your home.

Conclusion

Your Rinnai hot water system is designed to provide years of reliable service. By understanding common issues, knowing how to perform basic troubleshooting, and maintaining your system properly, you can ensure optimal performance and longevity. Remember, when in doubt, it’s always best to consult with a professional plumber or technician.

For expert help with your Rinnai hot water system in Sydney, don’t hesitate to contact Rapid Service Plumbing. Our team of friendly plumbers are available 24/7, offering fast, affordable solutions backed by a lifetime workmanship guarantee.

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