Lochinvar & A.O. Smith 100110729 Prover Switch
The Lochinvar & A.O. Smith 100110729 Prover Switch is a critical safety component designed for high-efficiency condensing boilers and commercial water heaters. This OEM pressure switch serves as a blower prover, ensuring the combustion air blower is generating sufficient static pressure to safely vent flue gases before the ignition sequence begins. As the direct updated version for FS6679-1338, this part features a normally open contact configuration that closes upon sensing the correct differential pressure, preventing hazardous conditions such as blocked flue or combustion air insufficiency. For technicians troubleshooting HVAC error codes related to "Blower Prover Open," this switch is the primary diagnostic point. Its durable diaphragm and calibrated set points are engineered to withstand the demanding environments of Lochinvar Knight and A.O. Smith BTH series units, maintaining system reliability and optimal thermal efficiency by confirming proper ventilation airflow during every start-up cycle.
Key Benefits- Direct OEM Replacement: Fully replaces and upgrades the legacy FS6679-1338 part number for seamless professional installation.
- System Protection: Critical safety limit switch functionality prevents burner operation if venting or intake air is obstructed.
- High Precision Sensing: Calibrated to detect exact inches of water column (W.C.) requirements for specific A.O. Smith and Lochinvar models.
- Rugged Construction: Built to endure the high-cycling demands of commercial water heating and hydronic boiler applications.
- Error Code Resolution: Resolves common "Blower Prover" and "Air Pressure Switch" fault messages in SMART SYSTEM controls.
Is the 100110729 interchangeable with the older FS6679-1338?
Yes, the 100110729 is the manufacturer-specified updated version for FS6679-1338. It maintains the same electrical ratings and pressure set points required for compatible Lochinvar and A.O. Smith equipment.
What causes a blower prover switch to fail?
Common failure points include moisture in the sensing tube, a ruptured internal diaphragm, or carbon buildup. If the blower is running but the pressure switch contacts remain open, it typically indicates either a defective switch or a venting restriction.
How do I verify if this prover switch is defective?
A technician should use a manometer to measure the actual pressure at the sensing port. If the pressure meets the unit's activation set point but the switch fails to close (verified by a continuity test), the 100110729 requires replacement.
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 100110729 Prover Switch
The Lochinvar & A.O. Smith 100110729 Prover Switch is a critical safety component designed for high-efficiency condensing boilers and commercial water heaters. This OEM pressure switch serves as a blower prover, ensuring the combustion air blower is generating sufficient static pressure to safely vent flue gases before the ignition sequence begins. As the direct updated version for FS6679-1338, this part features a normally open contact configuration that closes upon sensing the correct differential pressure, preventing hazardous conditions such as blocked flue or combustion air insufficiency. For technicians troubleshooting HVAC error codes related to "Blower Prover Open," this switch is the primary diagnostic point. Its durable diaphragm and calibrated set points are engineered to withstand the demanding environments of Lochinvar Knight and A.O. Smith BTH series units, maintaining system reliability and optimal thermal efficiency by confirming proper ventilation airflow during every start-up cycle.
Key Benefits- Direct OEM Replacement: Fully replaces and upgrades the legacy FS6679-1338 part number for seamless professional installation.
- System Protection: Critical safety limit switch functionality prevents burner operation if venting or intake air is obstructed.
- High Precision Sensing: Calibrated to detect exact inches of water column (W.C.) requirements for specific A.O. Smith and Lochinvar models.
- Rugged Construction: Built to endure the high-cycling demands of commercial water heating and hydronic boiler applications.
- Error Code Resolution: Resolves common "Blower Prover" and "Air Pressure Switch" fault messages in SMART SYSTEM controls.
Is the 100110729 interchangeable with the older FS6679-1338?
Yes, the 100110729 is the manufacturer-specified updated version for FS6679-1338. It maintains the same electrical ratings and pressure set points required for compatible Lochinvar and A.O. Smith equipment.
What causes a blower prover switch to fail?
Common failure points include moisture in the sensing tube, a ruptured internal diaphragm, or carbon buildup. If the blower is running but the pressure switch contacts remain open, it typically indicates either a defective switch or a venting restriction.
How do I verify if this prover switch is defective?
A technician should use a manometer to measure the actual pressure at the sensing port. If the pressure meets the unit's activation set point but the switch fails to close (verified by a continuity test), the 100110729 requires replacement.
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
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Description
The Lochinvar & A.O. Smith 100110729 Prover Switch is a critical safety component designed for high-efficiency condensing boilers and commercial water heaters. This OEM pressure switch serves as a blower prover, ensuring the combustion air blower is generating sufficient static pressure to safely vent flue gases before the ignition sequence begins. As the direct updated version for FS6679-1338, this part features a normally open contact configuration that closes upon sensing the correct differential pressure, preventing hazardous conditions such as blocked flue or combustion air insufficiency. For technicians troubleshooting HVAC error codes related to "Blower Prover Open," this switch is the primary diagnostic point. Its durable diaphragm and calibrated set points are engineered to withstand the demanding environments of Lochinvar Knight and A.O. Smith BTH series units, maintaining system reliability and optimal thermal efficiency by confirming proper ventilation airflow during every start-up cycle.
Key Benefits- Direct OEM Replacement: Fully replaces and upgrades the legacy FS6679-1338 part number for seamless professional installation.
- System Protection: Critical safety limit switch functionality prevents burner operation if venting or intake air is obstructed.
- High Precision Sensing: Calibrated to detect exact inches of water column (W.C.) requirements for specific A.O. Smith and Lochinvar models.
- Rugged Construction: Built to endure the high-cycling demands of commercial water heating and hydronic boiler applications.
- Error Code Resolution: Resolves common "Blower Prover" and "Air Pressure Switch" fault messages in SMART SYSTEM controls.
Is the 100110729 interchangeable with the older FS6679-1338?
Yes, the 100110729 is the manufacturer-specified updated version for FS6679-1338. It maintains the same electrical ratings and pressure set points required for compatible Lochinvar and A.O. Smith equipment.
What causes a blower prover switch to fail?
Common failure points include moisture in the sensing tube, a ruptured internal diaphragm, or carbon buildup. If the blower is running but the pressure switch contacts remain open, it typically indicates either a defective switch or a venting restriction.
How do I verify if this prover switch is defective?
A technician should use a manometer to measure the actual pressure at the sensing port. If the pressure meets the unit's activation set point but the switch fails to close (verified by a continuity test), the 100110729 requires replacement.
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.
