OEM Carrier Gas Furnace Flame Sensor Rod for PG9MAA036040ACKA

The flame sensor in your Carrier PG9MAA036040ACKA is the safety device that proves a flame is actually present after the gas valve opens. Using flame rectification, it lets a tiny microamp current pass through the flame to the control board; if the board doesn't see that signal, it shuts the gas off within seconds. When the sensor gets coated in oxide or carbon — or the rod cracks — the furnace lights for a few seconds and then shuts down, then tries again. That repeating ignite-then-die pattern, often ending in a hard lockout with the LED flashing a flame-sense code, is the textbook symptom. The sensor is a single metal rod (typically Kanthal-type alloy) on a ceramic insulator with a spade or screw terminal. A healthy unit passes roughly 2–6 microamps of flame current; anything under ~1 µA usually triggers lockout. Match the rod length, bend, and mounting bracket to your original. OEM matters because the rod alloy and the ceramic insulator's dielectric strength are specified to survive years of repeated flame exposure without cracking or leaking current to ground. Generic sensors often use thinner rods and lower-grade insulators that oxidize faster and fail to maintain a stable microamp signal, leading to recurring nuisance lockouts. Install difficulty: 1/5. Tools: 1/4" nut driver and fine emery cloth or a Scotch-Brite pad to clean the new rod's tip if reseating. #1 safety warning: turn off the gas supply and kill the furnace breaker before removing the burner-area sensor. Ships same business day from our stocked warehouse on orders placed 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 PG9MAA036040ACKA. 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.