Lochinvar & A.O. Smith 100113153 Wire Harness

The Lochinvar & A.O. Smith 100113153 Wire Harness is a critical OEM replacement part designed for high-efficiency condensing boilers and commercial water heaters. This specialized flame sensor wire harness ensures stable signal transmission between the flame electrode and the integrated control board, preventing nuisance lockout codes caused by high-resistance connections or insulation breakdown. Built to withstand the high-temperature environment of the burner assembly, this harness features heat-resistant insulation and precise terminal connectors for a secure, vibration-resistant fit. Field technicians often utilize this part when troubleshooting erratic flame rectification signals in Lochinvar Knight (KBN, KBN, WHN) and A.O. Smith Cyclone models. Restoring the millivolt signal integrity is essential for maintaining safe ignition sequences and optimal combustion performance. This HVAC repair part (formerly 100113153) provides a direct fit, eliminating the need for field-splicing and ensuring your flame ionization readings remain within the manufacturer's specified microamp range.

Key Technical Benefits

• Ensures accurate flame rectification signal to prevent intermittent ignition failure.
• Constructed with high-duty thermal-rated wiring to prevent melting or signal interference.
• Features exact OEM terminal ends for Lochinvar and A.O. Smith commercial units.
• Reduces voltage drop across the flame circuit to maintain consistent microamp readings.
• Direct replacement for legacy part numbers, simplifying HVAC troubleshooting and field repairs.

Common Questions

Why is my boiler showing a No Flame sensed error when the sensor is new?
If the flame sensor is clean, the issue is often a degraded flame sensor wire harness. Corrosion or heat damage in the 100113153 harness increases resistance, causing the control board to drop the signal.

Is the 100113153 compatible with Lochinvar Knight boilers?
Yes, this wire harness is a standard OEM component for various Knight XL and Crest models, as well as A.O. Smith Cyclone series water heaters.

Can I use standard universal wire instead of this harness?
Using non-spec wiring can lead to RFI interference or insulation failure. This OEM harness is rated for the specific impedance and temperature requirements of the flame rectification circuit.

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.