Common Technician Questions What causes a TP-222 sensor to fail prematurely

Precise Control: Microprocessor circuitry delivers consistent 4-second TFI timing

Enhanced System Safety: Facilitates secure electrical connections to prevent shorts and ensure reliable furnace ignition

Designed with a 16 3/8-foot (5-meter) high-temperature silicon cable

simplifying field wiring and stock requirements

Bard 8402-154 Limit Switch 340793-762 Common Technician Questions What causesThe Bard 8402 154 Limit Switch is a critical safety component designed for high performance HVAC systems. This OEM replacement part features an L165 30 specification, meaning the switch is calibrated to open the electrical circuit at 165F and automatically reset once the temperature differential drops by 30F. Engineered with an exposed face and a distinctive orange faceplate for rapid thermal response and easy identification, this automatic reset