
Lochinvar & A.O. Smith 100208401 Switch
Ensure critical safety and performance for commercial water heating and boiler systems with the Lochinvar & A.O. Smith 100208401 Switch. This genuine OEM Pressure Switch Nema 4 is engineered to monitor combustion air and flue gas pressures, providing precise circuit activation or deactivation based on preset thresholds. The NEMA 4 enclosure provides superior environmental protection against dust, rain, and hose-directed water, making it a reliable choice for demanding mechanical room environments. As a primary safety control, this switch prevents hazardous operation by confirming the inducer fan is moving air before ignition, protecting the heat exchanger from overheating or improper combustion cycles.
Designed for seamless compatibility with high-efficiency units from Lochinvar and A.O. Smith, the 100208401 replaces obsolete or failed air pressure sensors that cause common 3-flash error codes or "TCO Failed Open" status. This HVAC pressure switch is built to maintain factory-spec calibration, ensuring the "Smart System" control module receives accurate inputs for space heating and hot water generation. Professional contractors rely on this component for its durable internal diaphragm and corrosion-resistant housing, which withstand the cycling demands of commercial-grade boilers and tank-type water heaters.
Key Benefits- NEMA 4 Rated Protection: Rugged watertight and dust-tight housing ensures longevity in high-moisture or industrial environments.
- Precise Safety Monitoring: Maintains system integrity by verifying proper airflow and preventing ignition during blocked vent conditions.
- OEM Compatibility: Factory-authorized replacement part for specific Lochinvar and A.O. Smith commercial boilers and gas-fired water heaters.
- System Efficiency: Reduces unnecessary downtime and diagnostic calls by providing consistent pressure sensing for the integrated control module.
- What causes a pressure switch error code on Lochinvar boilers? While a failed 100208401 switch is a common culprit, technicians should also inspect for blocked flue piping, a cracked vacuum tube, or a fouled blower inducer port before replacement.
- Is this switch compatible with residential water heaters? This specific NEMA 4 model is typically utilized in commercial or high-performance residential units; always verify the part number against your specific model's manual.
- Can I use a NEMA 1 switch as a substitute? No, the NEMA 4 rating is required for protection against external elements and specific environmental safety standards relevant to this equipment's application.
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 100208401 Switch
Ensure critical safety and performance for commercial water heating and boiler systems with the Lochinvar & A.O. Smith 100208401 Switch. This genuine OEM Pressure Switch Nema 4 is engineered to monitor combustion air and flue gas pressures, providing precise circuit activation or deactivation based on preset thresholds. The NEMA 4 enclosure provides superior environmental protection against dust, rain, and hose-directed water, making it a reliable choice for demanding mechanical room environments. As a primary safety control, this switch prevents hazardous operation by confirming the inducer fan is moving air before ignition, protecting the heat exchanger from overheating or improper combustion cycles.
Designed for seamless compatibility with high-efficiency units from Lochinvar and A.O. Smith, the 100208401 replaces obsolete or failed air pressure sensors that cause common 3-flash error codes or "TCO Failed Open" status. This HVAC pressure switch is built to maintain factory-spec calibration, ensuring the "Smart System" control module receives accurate inputs for space heating and hot water generation. Professional contractors rely on this component for its durable internal diaphragm and corrosion-resistant housing, which withstand the cycling demands of commercial-grade boilers and tank-type water heaters.
Key Benefits- NEMA 4 Rated Protection: Rugged watertight and dust-tight housing ensures longevity in high-moisture or industrial environments.
- Precise Safety Monitoring: Maintains system integrity by verifying proper airflow and preventing ignition during blocked vent conditions.
- OEM Compatibility: Factory-authorized replacement part for specific Lochinvar and A.O. Smith commercial boilers and gas-fired water heaters.
- System Efficiency: Reduces unnecessary downtime and diagnostic calls by providing consistent pressure sensing for the integrated control module.
- What causes a pressure switch error code on Lochinvar boilers? While a failed 100208401 switch is a common culprit, technicians should also inspect for blocked flue piping, a cracked vacuum tube, or a fouled blower inducer port before replacement.
- Is this switch compatible with residential water heaters? This specific NEMA 4 model is typically utilized in commercial or high-performance residential units; always verify the part number against your specific model's manual.
- Can I use a NEMA 1 switch as a substitute? No, the NEMA 4 rating is required for protection against external elements and specific environmental safety standards relevant to this equipment's application.
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.
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
Ensure critical safety and performance for commercial water heating and boiler systems with the Lochinvar & A.O. Smith 100208401 Switch. This genuine OEM Pressure Switch Nema 4 is engineered to monitor combustion air and flue gas pressures, providing precise circuit activation or deactivation based on preset thresholds. The NEMA 4 enclosure provides superior environmental protection against dust, rain, and hose-directed water, making it a reliable choice for demanding mechanical room environments. As a primary safety control, this switch prevents hazardous operation by confirming the inducer fan is moving air before ignition, protecting the heat exchanger from overheating or improper combustion cycles.
Designed for seamless compatibility with high-efficiency units from Lochinvar and A.O. Smith, the 100208401 replaces obsolete or failed air pressure sensors that cause common 3-flash error codes or "TCO Failed Open" status. This HVAC pressure switch is built to maintain factory-spec calibration, ensuring the "Smart System" control module receives accurate inputs for space heating and hot water generation. Professional contractors rely on this component for its durable internal diaphragm and corrosion-resistant housing, which withstand the cycling demands of commercial-grade boilers and tank-type water heaters.
Key Benefits- NEMA 4 Rated Protection: Rugged watertight and dust-tight housing ensures longevity in high-moisture or industrial environments.
- Precise Safety Monitoring: Maintains system integrity by verifying proper airflow and preventing ignition during blocked vent conditions.
- OEM Compatibility: Factory-authorized replacement part for specific Lochinvar and A.O. Smith commercial boilers and gas-fired water heaters.
- System Efficiency: Reduces unnecessary downtime and diagnostic calls by providing consistent pressure sensing for the integrated control module.
- What causes a pressure switch error code on Lochinvar boilers? While a failed 100208401 switch is a common culprit, technicians should also inspect for blocked flue piping, a cracked vacuum tube, or a fouled blower inducer port before replacement.
- Is this switch compatible with residential water heaters? This specific NEMA 4 model is typically utilized in commercial or high-performance residential units; always verify the part number against your specific model's manual.
- Can I use a NEMA 1 switch as a substitute? No, the NEMA 4 rating is required for protection against external elements and specific environmental safety standards relevant to this equipment's application.
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.












