Description
The Carrier LH33WZ520 is an OEM replacement flame sensor designed to ensure safe and reliable operation of compatible Carrier furnace systems. The flame sensor plays a critical role in your furnace’s safety circuit — it detects the presence of a burner flame and signals the control board to continue the heating cycle. If no flame is detected, the control board shuts off the gas valve to prevent unsafe conditions.
Key Features
- OEM Carrier replacement flame sensor for precise fit and function
- Ensures accurate flame detection to maintain safe furnace operation
- Helps prevent nuisance lockouts caused by a worn or contaminated sensor rod
- Direct drop-in replacement minimizes installation time
- Manufactured to Carrier’s original equipment specifications
Application
- Compatible with select Carrier gas furnace models — verify compatibility with your unit’s model and serial number before ordering
- Ideal for HVAC technicians performing routine maintenance or troubleshooting ignition and flame-sensing issues
Why Replace Your Flame Sensor?
Over time, flame sensor rods accumulate oxidation and residue that insulate the rod and reduce its ability to conduct the microamp signal needed to confirm flame presence. A faulty or dirty flame sensor is one of the most common causes of furnace short-cycling and lockout faults. Replacing the sensor with a genuine Carrier OEM part restores proper operation and helps extend the life of the control board.
Product Details
- Brand: Carrier
- Part Number: LH33WZ520
- Part Type: Flame Sensor
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