What to Do When Your Rinnai Tankless Water Heater Isn’t Working
There’s nothing worse than stepping into the shower, expecting hot water, and being hit with ice-cold disappointment. If your Rinnai tankless water heater isn’t working properly, don’t panic—there are a few troubleshooting steps you can take before calling in the experts. Whether you’re in Nanaimo or Parksville, these tips can help you get your hot water flowing again.
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Check the Error Code
Most Rinnai tankless water heaters have a digital display that shows an error code when something goes wrong. If you see a code, refer to your Rinnai manual or search online for what it means. Some codes can be resolved with a simple reset, while others may indicate a more serious issue that requires professional repair.
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Ensure Gas, Water, and Power Are On
Sometimes the issue is as simple as a shut-off valve being closed. Check to make sure:
✅ The gas supply valve is open.
✅ The water supply valve is fully turned on.
✅ The power supply (breaker or outlet) is functioning properly.
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Inspect the Air Intake and Exhaust Venting
If the vents are clogged with debris, your tankless system may not operate correctly. Make sure the air intake and exhaust pipes are clear of obstructions like leaves, snow, or rodent nests.
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Flush Your Rinnai Tankless Water Heater
If your hot water has been fluctuating or your unit is making strange noises, it may have mineral buildup from hard water. Flushing your system with white vinegar or a descaling solution can help remove limescale and improve performance. If you haven’t had a professional maintenance service in the past year, it might be time to schedule one.
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Call a Professional for Rinnai Tankless Water Heater Repairs
If none of these troubleshooting steps work, it’s time to call an experienced plumber. A professional can diagnose the issue and make necessary repairs quickly and efficiently.
At Norm’s Plumbing, Heating & Air Conditioning, we specialize in Rinnai tankless water heater repairs in Nanaimo and Parksville. Our team has the experience and training to keep your hot water running smoothly.
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