Common Questions What is the primary function of the R-3710-1007

ensure evaporator coils are not impacted

ensuring a gas-tight seal without the need for excessive torque

this OEM part is engineered to detect abnormal high-temperature conditions—specifically flame rollout—and immediately break the electrical circuit to shut down the gas valve

Reliable 1

Copeland Comfort Control (White Rodgers) 3L09-20 Limit Switch Common Questions What is theThe White Rodgers 3L09 20 Limit Switch is a professional grade 1 2" bimetal disc limit control designed for high limit temperature protection in forced air heating systems. This board mounted limit switch features a 7. 12" insertion length, ensuring the sensing element is positioned deep within the air stream for rapid thermal response and precise high speed contact separation. Operating as a normally closed SPST switch, the 3L09 20 is engineered with