Lochinvar & A.O. Smith 100110859 Harness Control
When you're out on a call for a Lochinvar or A.O. Smith unit that won't fire or is throwing intermittent communication codes, the Lochinvar & A.O. Smith 100110859 Harness Control is often the culprit. This OEM replacement wire harness is engineered to maintain high-integrity signal paths between the Smart System control board, the display interface, and critical safety components like the air pressure switch and gas valve. As a veteran in the field, you know that brittle or corroded terminal connections can lead to "no display" faults or "flame fail" lockouts that are a nightmare to troubleshoot. This genuine factory harness, also identified by SKU 9006057215, ensures proper voltage distribution to the blower and manages the 24V supply circuits without the resistance issues found in aftermarket alternatives. Designed specifically for Knight and Armor series commercial boilers and water heaters, this HVAC control harness provides the precise pin-to-pin mapping required for complex boiler ignition control sequences and sensor feedback loops.
Key Benefits for the Contractor- Direct OEM Replacement: Eliminates the guesswork of pinouts and ensures 100% compatibility with Lochinvar Knight and A.O. Smith commercial units.
- Circuit Integrity: Features high-grade insulation and factory-crimped terminals to prevent voltage drops in the low voltage connection board.
- Reduced Diagnostic Time: Provides a clean "plug-and-play" solution for units suffering from erratic Smart System behavior or wiring-related error codes.
- Reliable Signal Shielding: Protects sensitive communication lines from electromagnetic interference, ensuring stable operation of the main control board.
What models is the 100110859 harness compatible with?
This harness is primarily designed for Lochinvar Knight Wall Mount boilers (models WH 55-399) and Armor series water heaters. Always verify with your specific serial number as harness configurations can vary by production year.
Does this harness include the F3 or F5 fuses?
This is the wiring harness assembly itself. While it connects to the fused terminals on the board, the slow-blow fuses are typically components of the control board assembly, not the harness wires.
Can this harness resolve a "No Display" fault?
Yes, if your multimeter shows voltage at the board but not at the display, a break in this harness is the most likely cause. Check the connection between the display board and the main control before replacing.
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.
Lochinvar & A.O. Smith 100110859 Harness Control
When you're out on a call for a Lochinvar or A.O. Smith unit that won't fire or is throwing intermittent communication codes, the Lochinvar & A.O. Smith 100110859 Harness Control is often the culprit. This OEM replacement wire harness is engineered to maintain high-integrity signal paths between the Smart System control board, the display interface, and critical safety components like the air pressure switch and gas valve. As a veteran in the field, you know that brittle or corroded terminal connections can lead to "no display" faults or "flame fail" lockouts that are a nightmare to troubleshoot. This genuine factory harness, also identified by SKU 9006057215, ensures proper voltage distribution to the blower and manages the 24V supply circuits without the resistance issues found in aftermarket alternatives. Designed specifically for Knight and Armor series commercial boilers and water heaters, this HVAC control harness provides the precise pin-to-pin mapping required for complex boiler ignition control sequences and sensor feedback loops.
Key Benefits for the Contractor- Direct OEM Replacement: Eliminates the guesswork of pinouts and ensures 100% compatibility with Lochinvar Knight and A.O. Smith commercial units.
- Circuit Integrity: Features high-grade insulation and factory-crimped terminals to prevent voltage drops in the low voltage connection board.
- Reduced Diagnostic Time: Provides a clean "plug-and-play" solution for units suffering from erratic Smart System behavior or wiring-related error codes.
- Reliable Signal Shielding: Protects sensitive communication lines from electromagnetic interference, ensuring stable operation of the main control board.
What models is the 100110859 harness compatible with?
This harness is primarily designed for Lochinvar Knight Wall Mount boilers (models WH 55-399) and Armor series water heaters. Always verify with your specific serial number as harness configurations can vary by production year.
Does this harness include the F3 or F5 fuses?
This is the wiring harness assembly itself. While it connects to the fused terminals on the board, the slow-blow fuses are typically components of the control board assembly, not the harness wires.
Can this harness resolve a "No Display" fault?
Yes, if your multimeter shows voltage at the board but not at the display, a break in this harness is the most likely cause. Check the connection between the display board and the main control before replacing.
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.
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Description
When you're out on a call for a Lochinvar or A.O. Smith unit that won't fire or is throwing intermittent communication codes, the Lochinvar & A.O. Smith 100110859 Harness Control is often the culprit. This OEM replacement wire harness is engineered to maintain high-integrity signal paths between the Smart System control board, the display interface, and critical safety components like the air pressure switch and gas valve. As a veteran in the field, you know that brittle or corroded terminal connections can lead to "no display" faults or "flame fail" lockouts that are a nightmare to troubleshoot. This genuine factory harness, also identified by SKU 9006057215, ensures proper voltage distribution to the blower and manages the 24V supply circuits without the resistance issues found in aftermarket alternatives. Designed specifically for Knight and Armor series commercial boilers and water heaters, this HVAC control harness provides the precise pin-to-pin mapping required for complex boiler ignition control sequences and sensor feedback loops.
Key Benefits for the Contractor- Direct OEM Replacement: Eliminates the guesswork of pinouts and ensures 100% compatibility with Lochinvar Knight and A.O. Smith commercial units.
- Circuit Integrity: Features high-grade insulation and factory-crimped terminals to prevent voltage drops in the low voltage connection board.
- Reduced Diagnostic Time: Provides a clean "plug-and-play" solution for units suffering from erratic Smart System behavior or wiring-related error codes.
- Reliable Signal Shielding: Protects sensitive communication lines from electromagnetic interference, ensuring stable operation of the main control board.
What models is the 100110859 harness compatible with?
This harness is primarily designed for Lochinvar Knight Wall Mount boilers (models WH 55-399) and Armor series water heaters. Always verify with your specific serial number as harness configurations can vary by production year.
Does this harness include the F3 or F5 fuses?
This is the wiring harness assembly itself. While it connects to the fused terminals on the board, the slow-blow fuses are typically components of the control board assembly, not the harness wires.
Can this harness resolve a "No Display" fault?
Yes, if your multimeter shows voltage at the board but not at the display, a break in this harness is the most likely cause. Check the connection between the display board and the main control before replacing.
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.
