Lochinvar & A.O. Smith 100167733 Relay
The Lochinvar & A.O. Smith 100167733 Relay is a specialized 24V HVAC control relay engineered for high-reliability switching in commercial and residential hydronic systems. This OEM replacement relay is frequently utilized in Lochinvar boiler control boards and A.O. Smith water heater electrical circuits to manage low-voltage signals that trigger high-load components. As a direct replacement for the legacy RLY2708 part number, it maintains strict timing and contact resistance specifications essential for modern high-efficiency combustion systems. Whether you are troubleshooting a 24V furnace relay or resolving a "no-call" for heat, this component ensures the 24VAC coil effectively bridges the gap between the thermostat and the burner or blower assembly.
Key Benefits- Universal 24VAC Compatibility: Specifically wound for 24-volt control systems, ensuring seamless integration with standard HVAC transformers.
- Precise Switching Logic: Engineered to provide reliable electromechanical contact closure, preventing rapid cycling and premature equipment wear.
- Direct OEM Fitment: Eliminates the need for field modifications, fitting the exact footprint of discontinued Lochinvar RLY2708 units.
- Enhanced System Stability: Designed to handle inductive loads common in boiler ignition sequences and fan control applications.
How do I test a 100167733 24V relay with a multimeter?
Set your meter to ohms and check for continuity across the 24V coil terminals; a reading of "OL" indicates a failed coil. Next, verify the resistance across the switched contacts when the coil is energized to ensure minimal voltage drop.
Can I use this to replace a standard 120V relay?
No, this is a 24-volt relay. Applying 120V to the coil will result in immediate component failure. Always verify the voltage on your HVAC wiring diagram before installation.
What are the signs of a failing Lochinvar boiler relay?
Common symptoms include audible "chattering" from the control board, the blower motor refusing to activate despite a thermostat call, or intermittent burner lockout codes related to control circuit interruptions.
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.
Original: $40.11
-65%$40.11
$14.04Lochinvar & A.O. Smith 100167733 Relay
The Lochinvar & A.O. Smith 100167733 Relay is a specialized 24V HVAC control relay engineered for high-reliability switching in commercial and residential hydronic systems. This OEM replacement relay is frequently utilized in Lochinvar boiler control boards and A.O. Smith water heater electrical circuits to manage low-voltage signals that trigger high-load components. As a direct replacement for the legacy RLY2708 part number, it maintains strict timing and contact resistance specifications essential for modern high-efficiency combustion systems. Whether you are troubleshooting a 24V furnace relay or resolving a "no-call" for heat, this component ensures the 24VAC coil effectively bridges the gap between the thermostat and the burner or blower assembly.
Key Benefits- Universal 24VAC Compatibility: Specifically wound for 24-volt control systems, ensuring seamless integration with standard HVAC transformers.
- Precise Switching Logic: Engineered to provide reliable electromechanical contact closure, preventing rapid cycling and premature equipment wear.
- Direct OEM Fitment: Eliminates the need for field modifications, fitting the exact footprint of discontinued Lochinvar RLY2708 units.
- Enhanced System Stability: Designed to handle inductive loads common in boiler ignition sequences and fan control applications.
How do I test a 100167733 24V relay with a multimeter?
Set your meter to ohms and check for continuity across the 24V coil terminals; a reading of "OL" indicates a failed coil. Next, verify the resistance across the switched contacts when the coil is energized to ensure minimal voltage drop.
Can I use this to replace a standard 120V relay?
No, this is a 24-volt relay. Applying 120V to the coil will result in immediate component failure. Always verify the voltage on your HVAC wiring diagram before installation.
What are the signs of a failing Lochinvar boiler relay?
Common symptoms include audible "chattering" from the control board, the blower motor refusing to activate despite a thermostat call, or intermittent burner lockout codes related to control circuit interruptions.
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.
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
The Lochinvar & A.O. Smith 100167733 Relay is a specialized 24V HVAC control relay engineered for high-reliability switching in commercial and residential hydronic systems. This OEM replacement relay is frequently utilized in Lochinvar boiler control boards and A.O. Smith water heater electrical circuits to manage low-voltage signals that trigger high-load components. As a direct replacement for the legacy RLY2708 part number, it maintains strict timing and contact resistance specifications essential for modern high-efficiency combustion systems. Whether you are troubleshooting a 24V furnace relay or resolving a "no-call" for heat, this component ensures the 24VAC coil effectively bridges the gap between the thermostat and the burner or blower assembly.
Key Benefits- Universal 24VAC Compatibility: Specifically wound for 24-volt control systems, ensuring seamless integration with standard HVAC transformers.
- Precise Switching Logic: Engineered to provide reliable electromechanical contact closure, preventing rapid cycling and premature equipment wear.
- Direct OEM Fitment: Eliminates the need for field modifications, fitting the exact footprint of discontinued Lochinvar RLY2708 units.
- Enhanced System Stability: Designed to handle inductive loads common in boiler ignition sequences and fan control applications.
How do I test a 100167733 24V relay with a multimeter?
Set your meter to ohms and check for continuity across the 24V coil terminals; a reading of "OL" indicates a failed coil. Next, verify the resistance across the switched contacts when the coil is energized to ensure minimal voltage drop.
Can I use this to replace a standard 120V relay?
No, this is a 24-volt relay. Applying 120V to the coil will result in immediate component failure. Always verify the voltage on your HVAC wiring diagram before installation.
What are the signs of a failing Lochinvar boiler relay?
Common symptoms include audible "chattering" from the control board, the blower motor refusing to activate despite a thermostat call, or intermittent burner lockout codes related to control circuit interruptions.
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.
