When performing HVAC diagnostics

Integrated Bleed Resistor: Protects start relay contacts from arcing and overheating during rapid cycling

Key Benefits OEM Compatibility: Guaranteed fit for Carrier

A fixed "out of range" reading typically indicates an open circuit (infinite resistance) or a short circuit (zero resistance) in the sensor wiring or the 10k thermistor element

Designed with a standard 1/4" barb connection for vacuum tubing and 3/16" male terminals

Lennox 41J81 Orifice 326058-756 When performing HVAC diagnosticsThe Lennox 41J81 Orifice is a precision engineered #54 LP straight orifice designed specifically for Liquid Propane gas conversions and pressure regulation in residential and light commercial HVAC systems. This replacement gas orifice features a specialized 0. 055 inch drill size, ensuring the calibrated flow rate necessary to maintain proper manifold pressure and optimal combustion efficiency. Engineered for durability, this Lennox gas burner part