To Next PageTo Next PageWhat to do if Navien KDB-203 STC makes unusual sounds?
If your Navien Boiler is making unusual sounds, turn it off immediately. Inspect the boiler for any loose parts or obstructions that may be causing the noise.
What to do if Navien Boiler is overheating?
If your Navien Boiler is overheating, allow it to cool down completely before attempting to use it again. This should help prevent any damage.
Why Navien Boiler power supply seems unstable?
If the power supply to your Navien Boiler seems unstable, verify that the power outlet is working correctly. Try using a different outlet to see if that resolves the issue.
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