OEM Carrier Flame Sensor for PG9MAB024060AASA Gas Furnace Unit

The flame sensor is the small single rod that confirms your Carrier PG9MAB024060AASA actually lit a flame after the gas valve opens. It works by flame rectification - a tiny microamp current passes through the burner flame to ground, telling the control board the burner is lit. When the sensor's tip oxidizes or carbons over, that signal drops below threshold and the board shuts the gas valve as a safety measure. The classic symptom is short-cycling on ignition: the furnace lights for a few seconds, drops out, retries two or three times, and finally goes into lockout - leaving you with cold air and a flashing flame-sense fault code. Intermittent no-heat on the coldest days is the tell. This is a single-rod flame-sensing electrode with a ceramic insulator and a 1/4-inch quick-connect spade terminal, generating a typical 1-6 microamp DC signal in a healthy flame (anything under about 0.5 uA usually drops out). The rod is a Kanthal-style high-temperature alloy. Confirm the mounting bracket and rod length match your original. Why OEM matters: the OEM sensor's rod alloy, length, and insulator position the tip correctly in the flame envelope to generate a strong, stable microamp signal. Aftermarket sensors with the wrong rod length or a cheaper alloy sit out of the flame or degrade faster, causing the same nuisance lockouts to return within months. Install difficulty: 1 of 5 - one screw and one wire. Tools: 1/4-inch nut driver, fine emery cloth or steel wool to clean the tip, and a multimeter set to DC microamps to verify the flame signal. SAFETY: shut off power at the breaker and the gas supply before removing the sensor, and never sand a flame rod with hard sandpaper that leaves grit on the tip. Ships same business day from our stocked warehouse on orders placed before 3 PM CST. 1-year OEM warranty and 30-day hassle-free returns on uninstalled parts.

Compatibility

This part is compatible with Carrier model PG9MAB024060AASA. 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.