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The Goodman 0130F00010S Flame Sensor is a genuine OEM ignition-system component for the GMT045-3 gas furnace and compatible models. The flame sensor confirms that the burners have lit by detecting the microamp rectification signal of the flame. A dirty, corroded, or failed sensor is the single most common cause of furnace short cycling and ignition lockouts — the control board shuts down the gas valve when it cannot verify flame.
The OEM 0130F00010S uses the correct rod length, alloy, and mounting bracket to sit precisely in the flame path and produce a stable signal to Goodman's control board. Generic sensors may have different rod geometry that reads a weak flame signal, causing intermittent lockouts even when the furnace is otherwise healthy. OEM ensures reliable, repeatable operation.
Easy (1/5). Turn off power and gas, remove one mounting screw, disconnect the wire lead, and swap in the new sensor. A common DIY-friendly repair, though a technician can confirm the microamp reading after installation.
Genuine Goodman reliability. Verify your model number before ordering.