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Reset button comes on after heater is running

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A reset button on any heater has to do with either an over-temperature or over-current condition. Since you didn't go into detail, I don't know if your "heater" is a quartz type space heater, electric water heater, or something completely different.

means that the device is getting too hot - and that the thermostat control is not operating as designed, failing to interrupt power to prevent overheating. The reset is separate safety device, and is designed to shut the heater down to prevent burns, fire, etc. Once operated, it stops power until it is manually reset.

An over-current device is an electrical device that works very much like a circuit breaker. If the heating element or associated wiring has been damaged, resulting in it drawing a larger amount of power than the wiring has been designed to carry, this device will open to interrupt the power to the device or appliance until manually reset. Any electrical device or appliance, when operated in such a way that allows it to draw more power than the wiring can safely handle becomes a fire hazard. The wiring or cord will heat up and if hot enough for long enough time, can cause the insulation to melt or burn. This creates a shock and fire hazard.

Any device or appliance that has a reset switch that opens more than once under normal use and conditions should be removed from use until it can be inspected and repaired.

I hope this helps & good luck! Please rate my reply. Thank you.

Posted on Mar 28, 2011

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This means that the heater is drawing more current than it is designed for. it could be a bad heating element that is shorted. the power cord could be shorted or last the reset button could be bad.
but usually it is something shorted.

Posted on Mar 28, 2011

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You don't say, but I am assuming that the motor is running and there is combustion in the combustion chamber and the heater is running fine, then the reset trips. Is this correct? If so, chances are the Safety Control (reset) is defective. Part number HA3003. The photocell could also be at fault. Check for a dirty lense on the photocell.

But---If there is no combustion in the chamber, then the photocell detects a no-flame condition and then it trips the reset.

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