Carrier LH33WZ009A Electrode Sensor
The Carrier LH33WZ009A Electrode Sensor is a critical OEM safety component engineered for precise flame detection in high-performance HVAC systems. Built to withstand the rigorous thermal environment of a burner assembly, this flame sensor electrode utilizes a high-grade stainless steel rod and a 72-inch lead wire to ensure continuous monitoring of the ignition process. For service technicians, this sensor is the primary defense against gas buildup; it detects the presence of a flame via ionization and signals the HVAC control board to permit continued gas flow or trigger a safety lockout. With an overall length of approximately 76 inches and a 1.5-inch element, the LH33WZ009A offers the exact impedance and physical geometry required for compatibility with Carrier furnace parts and rooftop units. Utilizing a genuine Carrier LH33WZ009A replacement maintains the system's factory-specified safety parameters, preventing common "no heat" calls and intermittent ignition failures caused by carbon fouling or ceramic insulator hairline cracks on universal alternatives.
Key Benefits- Direct OEM Compatibility: Engineered specifically for Carrier, Bryant, and Day & Night systems, ensuring the correct flame rectification signal strength.
- Durable Construction: High-temperature stainless steel electrode resists oxidation and carbon buildup for extended service intervals.
- Extended Reach: Includes a factory-terminated 72-inch lead wire for seamless routing to the control module in large-cabinet configurations.
- Enhanced Safety: Provides instantaneous flame-out detection to prevent hazardous unburned fuel accumulation.
How do I troubleshoot an LH33WZ009A ignition failure?
First, check for a cracked ceramic insulator, which can cause the signal to ground out before reaching the probe. If the insulator is intact, use a multimeter to verify the microamp (µA) signal during the ignition trial; a reading below manufacturer specs typically indicates the sensor needs cleaning or replacement.
Can I clean the LH33WZ009A instead of replacing it?
While light oxidation can sometimes be removed with a fine abrasive pad, pitting or significant erosion of the flame rod surface changes the electrical resistance. For commercial reliability, replacing the sensor is the professional standard to avoid repeat service calls.
Does this sensor work with both gas and electric heating sections?
The Carrier LH33WZ009A is specifically designed for gas-fired applications where its primary role is sensing the pilot or main burner flame through the ionization process.
This item is not eligible for free shipping.
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.
Original: $58.47
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Description
The Carrier LH33WZ009A Electrode Sensor is a critical OEM safety component engineered for precise flame detection in high-performance HVAC systems. Built to withstand the rigorous thermal environment of a burner assembly, this flame sensor electrode utilizes a high-grade stainless steel rod and a 72-inch lead wire to ensure continuous monitoring of the ignition process. For service technicians, this sensor is the primary defense against gas buildup; it detects the presence of a flame via ionization and signals the HVAC control board to permit continued gas flow or trigger a safety lockout. With an overall length of approximately 76 inches and a 1.5-inch element, the LH33WZ009A offers the exact impedance and physical geometry required for compatibility with Carrier furnace parts and rooftop units. Utilizing a genuine Carrier LH33WZ009A replacement maintains the system's factory-specified safety parameters, preventing common "no heat" calls and intermittent ignition failures caused by carbon fouling or ceramic insulator hairline cracks on universal alternatives.
Key Benefits- Direct OEM Compatibility: Engineered specifically for Carrier, Bryant, and Day & Night systems, ensuring the correct flame rectification signal strength.
- Durable Construction: High-temperature stainless steel electrode resists oxidation and carbon buildup for extended service intervals.
- Extended Reach: Includes a factory-terminated 72-inch lead wire for seamless routing to the control module in large-cabinet configurations.
- Enhanced Safety: Provides instantaneous flame-out detection to prevent hazardous unburned fuel accumulation.
How do I troubleshoot an LH33WZ009A ignition failure?
First, check for a cracked ceramic insulator, which can cause the signal to ground out before reaching the probe. If the insulator is intact, use a multimeter to verify the microamp (µA) signal during the ignition trial; a reading below manufacturer specs typically indicates the sensor needs cleaning or replacement.
Can I clean the LH33WZ009A instead of replacing it?
While light oxidation can sometimes be removed with a fine abrasive pad, pitting or significant erosion of the flame rod surface changes the electrical resistance. For commercial reliability, replacing the sensor is the professional standard to avoid repeat service calls.
Does this sensor work with both gas and electric heating sections?
The Carrier LH33WZ009A is specifically designed for gas-fired applications where its primary role is sensing the pilot or main burner flame through the ionization process.
This item is not eligible for free shipping.
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.
