Description
The AAON R86790 is an OEM replacement probe flame sensor designed for use in AAON commercial HVAC equipment. Featuring a 1.75-inch insertion depth, this flame sensing probe delivers accurate and dependable flame detection to keep your heating system operating safely and efficiently.
Product Overview
Flame sensors are a critical safety component in gas-fired HVAC systems. The probe-style design of the R86790 detects the presence of a burner flame through the flame rectification principle, sending a signal to the control board to confirm ignition. If the flame is not detected within the allotted trial-for-ignition period, the control board will lock out the system, preventing unburned gas from accumulating — a vital safety function.
Key Features
- OEM AAON replacement flame sensor for reliable, like-for-like performance
- Probe-style design with 1.75″ insertion depth for precise burner flame detection
- Utilizes flame rectification technology for accurate sensing
- Engineered to meet AAON equipment specifications
- Helps maintain proper burner operation and system safety lockout functions
- Direct replacement minimizes downtime during service calls
Application
- Compatible with AAON commercial rooftop units and gas-fired HVAC equipment requiring the R86790 flame sensor
- Recommended for use by qualified HVAC technicians during routine maintenance or troubleshooting of ignition and flame sensing issues
Installation Notes
Always verify compatibility with your specific AAON unit model before installation. Disconnect all power and gas supplies before servicing. Replace the flame sensor if the probe shows signs of oxidation, carbon buildup, or if the system is experiencing nuisance lockouts due to flame sensing failures. Consult the AAON equipment service manual for torque specifications and proper probe positioning.
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