OEM Carrier Furnace Flame Sensor for Model PG8JAA048070ABJA

The flame sensor in your Carrier PG8JAA048070ABJA is a single rod that sits in the burner flame and confirms to the control board that a flame is actually present after ignition, using flame rectification to pass a tiny microamp current. If the board doesn't sense that current within a few seconds, it shuts the gas valve as a safety measure. When the sensor gets coated with oxidation or silica scale, the homeowner sees the classic short-cycle: the burners light, run for 3–7 seconds, then shut off, repeating several times before the furnace locks out and goes cold. This is a single-rod flame-rectification sensor with a Kanthal/stainless rod and a high-temperature ceramic insulator. A healthy circuit reads roughly 1–6 microamps of DC flame current; anything below about 0.5 µA causes dropout. OEM sensors use the correct rod length and alloy so the rod sits properly in the flame envelope and resists scaling. OEM matters because rod position and insulator quality are exact. A generic sensor with the wrong rod length sits at the edge of the flame and reads weak current even when clean, while a cheap insulator can crack and leak current to ground, mimicking a failure and causing nuisance lockouts. Install difficulty: 1 of 5. Tools needed: 1/4" nut driver (usually a single screw), and optionally a multimeter set to DC microamps to verify flame current. SAFETY: turn off the gas supply and the furnace power before removing the sensor near the burner assembly. 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 PG8JAA048070ABJA. 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.