OEM Carrier Gas Furnace Flame Sensor Rod for PG9MAA036040ADKA

The flame sensor is the safety device that proves your Carrier PG9MAA036040ADKA actually lit. Once the burners ignite, this single metal rod sits in the flame and conducts a tiny microamp current back to the control board through flame rectification. If the board doesn't see that current, it assumes there's no flame and immediately closes the gas valve to prevent raw gas from building up. When the sensor gets coated in oxide or carbon, that signal drops and the furnace lights for a few seconds then shuts off — the classic short-cycle: ignition, brief flame, shutdown, repeat, then hard lockout with no heat. This is a Carrier-spec flame sensor with the correct rod length, bend, and ceramic insulator to seat properly in the PG9MAA burner flame. A healthy sensor reads roughly 1–6 microamps of flame current on a meter in series; below about 1 microamp the board will start dropping out. Why OEM: the rod alloy and insulator matter. Generic sensors often use a lower-grade rod that oxidizes faster and a cheaper insulator that can crack and leak signal to ground, causing intermittent flame-loss faults that are maddening to chase. The genuine rod gives a clean, stable microamp signal and the right positioning in the flame. Install difficulty: 1/5 — one of the easiest furnace repairs. Tools: 1/4" nut driver and fine steel wool or emery cloth (often a cleaning is all an old sensor needs). The #1 safety rule: shut off the gas supply and the furnace breaker before removing the sensor, since it sits inches from the live burners. Ships same business day from our stocked warehouse on orders before 3 PM CST. Backed by a 1-year OEM warranty and 30-day hassle-free returns on uninstalled parts.

Compatibility

This part is compatible with Carrier model PG9MAA036040ADKA. Always verify the part number against your unit's data plate before ordering.

Why Choose OEM?

OEM parts are manufactured to the exact factory specifications for your unit. Generic aftermarket alternatives may fit physically but often use lower-rated components that reduce equipment life and void manufacturer warranties. When the cost difference between OEM and generic is $10-30, the OEM part is always the smarter investment on a system worth $5,000-$15,000.

Shipping & Returns

Same-day shipping on orders before 3 PM CST. Standard delivery 2-5 business days, express options available at checkout. 30-day hassle-free returns on uninstalled parts — free return shipping included. 1-year OEM factory warranty coverage.