Lochinvar & A.O. Smith 100112429 Switch
The Lochinvar & A.O. Smith 100112429 Blocked Flue Switch is a critical safety component designed for high-efficiency water heaters and commercial boilers. As a normally closed thermal switch, it monitors the venting system for atmospheric pressure imbalances or physical obstructions that could lead to dangerous carbon monoxide accumulation. Engineered for precision, this OEM replacement part triggers a system shutdown if it detects flue gas backup, typically calibrated for a 1.0-inch water column threshold. For technicians, this flue exhaust safety switch is a staple in the maintenance of Lochinvar Knight and A.O. Smith residential water heaters, ensuring the combustion process remains sealed and exhaust is properly evacuated through the vent pipe.
Constructed with a rugged heat transfer tube and a durable mounting plate, the 100112429 kit is built to withstand the high-temperature environment of an active flue. When troubleshooting "Blocked Flue" or "Air Pressure Switch" fault codes on the Smart System control panel, verifying the integrity of this limit control switch is a primary diagnostic step. Always check for vent pitch issues or bird screens before replacing, as this safety shut-off device acts as the final line of defense against venting failure.
- Universal Compatibility: Fits a wide range of Lochinvar, A.O. Smith, State, and American Water Heater models.
- Precision Safety: Calibrated for 1.0" W.C. to provide accurate detection of restricted airflow or backdraft.
- OEM Reliability: Genuine Lochinvar 100112429 part ensures seamless integration with existing low-voltage control boards.
- System Protection: Prevents costly repairs by deactivating the inducer assembly and gas valve during venting failures.
Common Questions:
What causes the 100112429 switch to trip frequently?
Frequent trips usually indicate a restricted chimney, improper vent termination, or a failing inducer motor that isn't pulling enough static pressure to maintain the normally closed circuit. Ensure the vent pipe is clear of debris and the fiber gasket is sealed properly.
Is this switch a manual reset or automatic reset?
Most blocked flue switches in this series are safety limits that require a manual reset or a power cycle of the control module once the venting obstruction is cleared to ensure a technician has inspected the system.
Can I bypass this switch for testing?
Bypassing safety controls is never recommended in a live environment. Use a multimeter to check for continuity across the terminals while the system is off to verify if the thermal switch has failed open.
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.
Original: $43.57
-65%$43.57
$15.25Lochinvar & A.O. Smith 100112429 Switch
The Lochinvar & A.O. Smith 100112429 Blocked Flue Switch is a critical safety component designed for high-efficiency water heaters and commercial boilers. As a normally closed thermal switch, it monitors the venting system for atmospheric pressure imbalances or physical obstructions that could lead to dangerous carbon monoxide accumulation. Engineered for precision, this OEM replacement part triggers a system shutdown if it detects flue gas backup, typically calibrated for a 1.0-inch water column threshold. For technicians, this flue exhaust safety switch is a staple in the maintenance of Lochinvar Knight and A.O. Smith residential water heaters, ensuring the combustion process remains sealed and exhaust is properly evacuated through the vent pipe.
Constructed with a rugged heat transfer tube and a durable mounting plate, the 100112429 kit is built to withstand the high-temperature environment of an active flue. When troubleshooting "Blocked Flue" or "Air Pressure Switch" fault codes on the Smart System control panel, verifying the integrity of this limit control switch is a primary diagnostic step. Always check for vent pitch issues or bird screens before replacing, as this safety shut-off device acts as the final line of defense against venting failure.
- Universal Compatibility: Fits a wide range of Lochinvar, A.O. Smith, State, and American Water Heater models.
- Precision Safety: Calibrated for 1.0" W.C. to provide accurate detection of restricted airflow or backdraft.
- OEM Reliability: Genuine Lochinvar 100112429 part ensures seamless integration with existing low-voltage control boards.
- System Protection: Prevents costly repairs by deactivating the inducer assembly and gas valve during venting failures.
Common Questions:
What causes the 100112429 switch to trip frequently?
Frequent trips usually indicate a restricted chimney, improper vent termination, or a failing inducer motor that isn't pulling enough static pressure to maintain the normally closed circuit. Ensure the vent pipe is clear of debris and the fiber gasket is sealed properly.
Is this switch a manual reset or automatic reset?
Most blocked flue switches in this series are safety limits that require a manual reset or a power cycle of the control module once the venting obstruction is cleared to ensure a technician has inspected the system.
Can I bypass this switch for testing?
Bypassing safety controls is never recommended in a live environment. Use a multimeter to check for continuity across the terminals while the system is off to verify if the thermal switch has failed open.
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
The Lochinvar & A.O. Smith 100112429 Blocked Flue Switch is a critical safety component designed for high-efficiency water heaters and commercial boilers. As a normally closed thermal switch, it monitors the venting system for atmospheric pressure imbalances or physical obstructions that could lead to dangerous carbon monoxide accumulation. Engineered for precision, this OEM replacement part triggers a system shutdown if it detects flue gas backup, typically calibrated for a 1.0-inch water column threshold. For technicians, this flue exhaust safety switch is a staple in the maintenance of Lochinvar Knight and A.O. Smith residential water heaters, ensuring the combustion process remains sealed and exhaust is properly evacuated through the vent pipe.
Constructed with a rugged heat transfer tube and a durable mounting plate, the 100112429 kit is built to withstand the high-temperature environment of an active flue. When troubleshooting "Blocked Flue" or "Air Pressure Switch" fault codes on the Smart System control panel, verifying the integrity of this limit control switch is a primary diagnostic step. Always check for vent pitch issues or bird screens before replacing, as this safety shut-off device acts as the final line of defense against venting failure.
- Universal Compatibility: Fits a wide range of Lochinvar, A.O. Smith, State, and American Water Heater models.
- Precision Safety: Calibrated for 1.0" W.C. to provide accurate detection of restricted airflow or backdraft.
- OEM Reliability: Genuine Lochinvar 100112429 part ensures seamless integration with existing low-voltage control boards.
- System Protection: Prevents costly repairs by deactivating the inducer assembly and gas valve during venting failures.
Common Questions:
What causes the 100112429 switch to trip frequently?
Frequent trips usually indicate a restricted chimney, improper vent termination, or a failing inducer motor that isn't pulling enough static pressure to maintain the normally closed circuit. Ensure the vent pipe is clear of debris and the fiber gasket is sealed properly.
Is this switch a manual reset or automatic reset?
Most blocked flue switches in this series are safety limits that require a manual reset or a power cycle of the control module once the venting obstruction is cleared to ensure a technician has inspected the system.
Can I bypass this switch for testing?
Bypassing safety controls is never recommended in a live environment. Use a multimeter to check for continuity across the terminals while the system is off to verify if the thermal switch has failed open.
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.
