Smith replacement part like this sensor is essential for resolving the common "7-flash" error code and ensuring the appliance remains compliant with local safety codes

drawing only 3 watts during transition and remaining unpowered at rest to conserve energy

By monitoring the flame sensor signal with high precision

preventing fluid or gas bypass

Lennox 63K10 Defrost Switch 322057-301 Smith replacement part like thisWhen you're servicing Lennox heat pumps, a failed Lennox 63K10 Defrost Switch is often the culprit behind iced over coils and compromised efficiency. This OEM Lennox replacement part is engineered for high accuracy temperature monitoring on the outdoor coil, ensuring the defrost cycle initiates exactly when needed to prevent frost accumulation. Built for commercial and industrial grade durability, this HVAC defrost control manages the thermal switch