Ruud 62-23543-08 Flame Sensor 90 Degree Gas Furnace

Product Description

The RUUD 62-23543-08 is an OEM-replacement flame sensor designed for use in high-efficiency residential gas furnaces. The flame sensor detects the presence of a burner flame through the principle of flame rectification, sending a microamp signal back to the control board to confirm ignition. If the signal is absent or too weak, the control board will lock out the burner as a safety measure. This sensor features a 90-degree offset angle and a 1/4-inch male quick-connect terminal, making it a direct fit for specific RUUD furnace model families. Licensed HVAC technicians typically service and replace this component during seasonal tune-ups or no-heat diagnostic calls.

This flame sensor is designed for use in RUUD high-efficiency gas furnaces across multiple residential product lines. It fits furnaces in the R92, R95, R96, R97, and R98 series, covering both standard and ultra-high-efficiency models. The 90-degree offset angle positions the sensor rod correctly at the burner assembly without requiring modification. It is well-suited for residential replacement work where the original sensor has degraded due to oxidation or carbon buildup on the rod, resulting in weak flame signal and nuisance lockouts.

Key Features

• 90-degree offset angle positions the sensor rod accurately at the burner flame
• 1/4-inch male quick-connect terminal for direct OEM-style wiring connection
• Flame rectification design sends microamp signal to the furnace control board
• OEM replacement part manufactured under the RUUD Protech parts program
• Compact form factor fits within tight furnace heat exchanger compartments

Compatibility

Compatible with RUUD gas furnace models R92PA, R92TA, R95PA, R95TA, R95TB, R95TC, R96PA, R96TA, R96VA, R97V-USA, R97V-KSA, and R98V-USA as stated by the manufacturer.

Installation Notes

Installation should be performed by a licensed HVAC technician in accordance with local mechanical codes and the furnace manufacturer's service instructions. Always disconnect power to the furnace and close the gas supply valve before beginning any burner compartment service. The sensor rod should not be handled with bare hands after cleaning or replacement, as skin oils can accelerate oxidation and degrade signal quality. Verify microamp flame signal at the control board after installation to confirm proper sensor operation before returning the system to service.

Technical Specifications

• Type: Flame Sensor
• Angle: 90-degree offset
• Terminal: 1/4-inch male quick connect
• Length: 4.8 inches
• Width: 3.85 inches
• Height: 1.4 inches
• Weight: 0.13 pounds

Standard Information

• Brand: RUUD
• Manufacturer Part Number: 62-23543-08