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Quick Fixes for Your Rinnai Heater

12 may 2025

Quick Fixes for Your Rinnai Heater

When winter hits and the temperatures plummet, there’s nothing worse than finding your Rinnai gas heater isn’t working properly. While Rinnai heaters are known for their reliability and efficiency, like any home appliance, they can sometimes need a bit of troubleshooting. Before you panic or start piling on the blankets, there are several quick fixes you can try to get your heater back up and running.

At Hero Plumbing, we specialize in Rinnai gas heater service and want to help you stay warm without unnecessary stress. Here’s a handy guide to help you identify and resolve common issues with your Rinnai gas heater.

1. Check the Power Supply

First things first — is your heater getting power? It sounds obvious, but it’s worth confirming that the unit is plugged in and that the circuit breaker hasn’t tripped. If your Rinnai heater isn’t turning on at all, it could be a simple electrical issue.

Try resetting the breaker or unplugging the unit and plugging it back in. If the issue persists, it may be time to schedule a Rinnai gas heater service with the professionals at Hero Plumbing.

2. Inspect the Gas Supply

If your heater powers on but doesn’t produce heat, the gas supply might be the culprit. Make sure your gas valve is fully open and that you haven’t run out of gas if you’re using bottled LPG. Sometimes, air can get trapped in the gas lines, especially after a refill. You can usually purge this air by turning the heater on and off a few times, but if the smell of gas lingers, switch off the unit and call Hero Plumbing immediately.

3. Clean the Air Filters

One of the most common issues we see at Hero Plumbing during routine Rinnai gas heater service is dirty or clogged air filters. Over time, dust and debris accumulate and restrict airflow, causing the heater to operate inefficiently or even shut down.

To clean the filters:

  • Turn off and unplug the unit.
  • Locate the air filters (usually at the back or side).
  • Gently remove and clean them with a vacuum or warm soapy water.
  • Allow them to dry completely before reinstalling.

This simple step can dramatically improve your heater’s performance.

4. Reset the Unit

Rinnai heaters often display error codes when something goes wrong. These codes are helpful diagnostic tools — and sometimes, the issue is as simple as needing a reset. Refer to your user manual for the specific reset procedure for your model. Typically, holding down the power or reset button for several seconds will do the trick.

If the error code reappears, it’s best to let a licensed technician from Hero Plumbing perform a full Rinnai gas heater service to identify the root cause.

5. Watch for Flame Failure

If your unit starts but shuts off quickly, it might be experiencing flame failure. This can be due to poor gas pressure, blocked burners, or faulty sensors. Try turning off the unit and restarting it after a few minutes. Still no luck? This issue often requires professional service, so don’t hesitate to contact the team at Hero Plumbing.

When to Call the Experts

While these quick fixes can solve many minor issues, some problems require professional tools and experience. If your Rinnai heater is still underperforming or displaying recurring error codes, it’s time for a comprehensive Rinnai gas heater service.

At Hero Plumbing, our licensed technicians are trained in all models of Rinnai heaters. We offer fast, friendly, and affordable service to ensure your home stays warm and safe all winter long.

Book your Rinnai gas heater service with Hero Plumbing today and experience peace of mind with expert care at your doorstep.

For further details, check out our other service-focused articles gas heater service Sydney