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Melissa KellerJul 26, 2025
Why does my Mr. Heater Portable Buddy MH9BX keep shutting off?
- JJoshua MorrisJul 26, 2025
Your Mr. Heater Gas Heater might be shutting off due to several reasons. The pilot could be blocked, so cleaning the pilot might help. The tip-over switch may have been activated if the heater was bumped, in which case you should try re-lighting it. Also, the regulator might be defective, requiring a replacement. In some cases, internal contamination might be the cause, necessitating the replacement of both the control valve and regulator.