More than likely, the alarm is a warning that the heater is not sitting perfectly level, check to make sure that it is sitting level. Or it could be a carbon monoxide warning. Open a window, just slightly, and see if that fixes the problem. Also, the appliance could be overheating, which could be a problem.
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More than likely, the alarm is a warning that the heater is not sitting perfectly level, check to make sure that it is sitting level. Or it could be a carbon monoxide warning. Open a window, just slightly, and see if that fixes the problem. Also, the appliance could be overheating, which could be a problem.