Electrical Projects A dead fan involves the motor or fan switch. The former may have an electrical fault or it may be the victim of seized bearings.

If the room temperature is too low, look to the thermostat adjustments. The stat may be adjusted too low or the differential may be too wide. A dead fan can also be the culprit. Of course, a low-heat complaint assumes that the room is not too large for the heater. Too high a room temperature means that the thermostat is too high or that the differential is too small.

Noise can originate in loose motor mounts, contact between the fan and shell, or a loose element.





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November 20, 2008