Carrier 48DJ501022 Wire/Sensor

The Carrier 48DJ501022 Wire/Sensor is a critical high-temperature component designed specifically for Carrier and Bryant rooftop units and packaged systems. This HVAC ignitor sensor assembly serves a dual function, providing the necessary high-voltage lead for spark ignition while simultaneously acting as a conductive flame probe to complete the DC microamp rectification circuit. Engineered to withstand the thermal stresses of the burner compartment, the wire features high-grade insulation to prevent dielectric breakdown and voltage leakage, ensuring a consistent spark and reliable flame signal detection by the integrated furnace control or ignition module. When diagnosing intermittent ignition lockouts or "no flame" fault codes on 50DJ, 48TC, or 48HC series equipment, replacing a brittle or fouled sensor with this OEM-spec assembly restores precise furnace ignition sequence timing and prevents nuisance service calls caused by signal attenuation or carbon tracking along the porcelain insulator.

• Precise Signal Feedback: Maintains a stable microamp signal to the control board, preventing HVAC system lockout due to false flame failures.
• OEM Compatibility: Exact replacement for 48DJ501022, ensuring correct lead length and terminal connections for Carrier burner assemblies.
• High-Temperature Durability: Specialized wire insulation and sensor metallurgy resist oxidation and thermal degradation in high-cycle commercial applications.
• Simplified Installation: Standard furnace flame sensor geometry allows for direct fitment into existing mounting brackets without field modification.
• Reliable Spark Gap: Maintains factory-spec clearance for consistent arc generation across the burner surface.

What are the symptoms of a failing Carrier 48DJ501022 sensor?
Common signs include the burner lighting for several seconds then shutting down, consistent ignition failure error codes, or visible cracks in the ceramic insulator causing the spark to arc to the chassis rather than the burner.

Can this sensor be cleaned, or must it be replaced?
While light oxidation can sometimes be removed with a non-conductive abrasive pad, a replacement ignitor sensor is required if the wire insulation is brittle, the terminal is corroded, or the ceramic housing is cracked, as these issues cause intermittent HVAC operation.

Does this assembly include the mounting hardware?
This part number typically refers to the ignitor wire and sensor probe assembly. Technicians should retain the original mounting screws or ensure they have standard 1/4-inch hex head self-tappers for installation.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.