Lochinvar & A.O. Smith 100166080 Thermal Switch
The Lochinvar & A.O. Smith 100166080 Thermal Switch is a critical safety component designed for Residential FVIR (Flammable Vapor Ignition Resistant) gas water heaters. As a resettable thermal switch, it monitors the combustion chamber for excessive temperatures or restricted airflow—common issues in systems with a clogged flame arrestor or inadequate makeup air. This rollout switch acts as a manual reset high-limit, preventing gas flow to the burner by interrupting the thermopile circuit if a water heater status light indicates an electrical or combustion fault. Integrated within models such as the LS(N,L) 030G and LT(N,L) 040G, this FVIR safety switch is essential for maintaining the operational integrity of the burner assembly. If the pilot fails to stay lit or the unit experiences ignition failure, a continuity test on this Lochinvar technical part will determine if the circuit is open. Utilizing a genuine A.O. Smith replacement part ensures precise thermal protection and long-term compatibility with the manufacturer’s combustion air management requirements.
Key Benefits- Manual Reset Capability: Allows for immediate restoration of the safety circuit after the underlying combustion air problem is resolved.
- FVIR Compliance: Specifically engineered to meet strict safety standards for flammable vapor ignition resistance in residential gas units.
- Enhanced System Safety: Protects the internal combustion chamber from overheating due to blocked vent conditions or lint buildup in the base ring filter.
- Direct Compatibility: Drop-in replacement for 100166080 and RLY1002, ensuring electrical connectors and mounting offsets match OEM specifications.
What causes this thermal switch to trip repeatedly?
Frequent tripping usually points to a lack of combustion air. Check the flame arrestor at the bottom of the water heater and the outer door seal for dust or lint accumulation. Ensure the room provides adequate air supply for the burner to draft correctly.
How do I test if the switch is faulty?
Disconnect the wiring leads and perform a continuity test using a digital multimeter set to Ohms. If the button is depressed but the circuit remains open (OL), the switch is likely defective and requires replacement.
Can this part be used on power vent models?
This specific 100166080 switch is primarily designed for atmospheric vent FVIR models. Always verify your specific Lochinvar or A.O. Smith model number and series against the technical manual to ensure the high-limit temperature rating matches.
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: $69.89
-65%$69.89
$24.46Lochinvar & A.O. Smith 100166080 Thermal Switch
The Lochinvar & A.O. Smith 100166080 Thermal Switch is a critical safety component designed for Residential FVIR (Flammable Vapor Ignition Resistant) gas water heaters. As a resettable thermal switch, it monitors the combustion chamber for excessive temperatures or restricted airflow—common issues in systems with a clogged flame arrestor or inadequate makeup air. This rollout switch acts as a manual reset high-limit, preventing gas flow to the burner by interrupting the thermopile circuit if a water heater status light indicates an electrical or combustion fault. Integrated within models such as the LS(N,L) 030G and LT(N,L) 040G, this FVIR safety switch is essential for maintaining the operational integrity of the burner assembly. If the pilot fails to stay lit or the unit experiences ignition failure, a continuity test on this Lochinvar technical part will determine if the circuit is open. Utilizing a genuine A.O. Smith replacement part ensures precise thermal protection and long-term compatibility with the manufacturer’s combustion air management requirements.
Key Benefits- Manual Reset Capability: Allows for immediate restoration of the safety circuit after the underlying combustion air problem is resolved.
- FVIR Compliance: Specifically engineered to meet strict safety standards for flammable vapor ignition resistance in residential gas units.
- Enhanced System Safety: Protects the internal combustion chamber from overheating due to blocked vent conditions or lint buildup in the base ring filter.
- Direct Compatibility: Drop-in replacement for 100166080 and RLY1002, ensuring electrical connectors and mounting offsets match OEM specifications.
What causes this thermal switch to trip repeatedly?
Frequent tripping usually points to a lack of combustion air. Check the flame arrestor at the bottom of the water heater and the outer door seal for dust or lint accumulation. Ensure the room provides adequate air supply for the burner to draft correctly.
How do I test if the switch is faulty?
Disconnect the wiring leads and perform a continuity test using a digital multimeter set to Ohms. If the button is depressed but the circuit remains open (OL), the switch is likely defective and requires replacement.
Can this part be used on power vent models?
This specific 100166080 switch is primarily designed for atmospheric vent FVIR models. Always verify your specific Lochinvar or A.O. Smith model number and series against the technical manual to ensure the high-limit temperature rating matches.
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 100166080 Thermal Switch is a critical safety component designed for Residential FVIR (Flammable Vapor Ignition Resistant) gas water heaters. As a resettable thermal switch, it monitors the combustion chamber for excessive temperatures or restricted airflow—common issues in systems with a clogged flame arrestor or inadequate makeup air. This rollout switch acts as a manual reset high-limit, preventing gas flow to the burner by interrupting the thermopile circuit if a water heater status light indicates an electrical or combustion fault. Integrated within models such as the LS(N,L) 030G and LT(N,L) 040G, this FVIR safety switch is essential for maintaining the operational integrity of the burner assembly. If the pilot fails to stay lit or the unit experiences ignition failure, a continuity test on this Lochinvar technical part will determine if the circuit is open. Utilizing a genuine A.O. Smith replacement part ensures precise thermal protection and long-term compatibility with the manufacturer’s combustion air management requirements.
Key Benefits- Manual Reset Capability: Allows for immediate restoration of the safety circuit after the underlying combustion air problem is resolved.
- FVIR Compliance: Specifically engineered to meet strict safety standards for flammable vapor ignition resistance in residential gas units.
- Enhanced System Safety: Protects the internal combustion chamber from overheating due to blocked vent conditions or lint buildup in the base ring filter.
- Direct Compatibility: Drop-in replacement for 100166080 and RLY1002, ensuring electrical connectors and mounting offsets match OEM specifications.
What causes this thermal switch to trip repeatedly?
Frequent tripping usually points to a lack of combustion air. Check the flame arrestor at the bottom of the water heater and the outer door seal for dust or lint accumulation. Ensure the room provides adequate air supply for the burner to draft correctly.
How do I test if the switch is faulty?
Disconnect the wiring leads and perform a continuity test using a digital multimeter set to Ohms. If the button is depressed but the circuit remains open (OL), the switch is likely defective and requires replacement.
Can this part be used on power vent models?
This specific 100166080 switch is primarily designed for atmospheric vent FVIR models. Always verify your specific Lochinvar or A.O. Smith model number and series against the technical manual to ensure the high-limit temperature rating matches.
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.
