Nordyne 626417R Limit Switch 321702-401 this immersion well is specifically

this immersion well is specifically optimized for White-Rodgers sensing bulbs and controls

ensuring the correct BTU input and manifold pressure for optimal combustion

A standard single flash typically indicates normal operation (heartbeat)

The unit requires a 24V AC power source capable of handling the 70W peak running load and the 25W holding draw common in two-position control applications

including the pneumatic 4-inch and 8-inch models

Nordyne 626417R Limit Switch 321702-401 this immersion well is specificallyAs a technician, you know that a tripped Nordyne 626417R Limit Switch is often the only thing standing between a routine heat cycle and a cracked heat exchanger. This OEM Nordyne furnace part is a critical high limit safety control designed to monitor internal plenum temperatures. If the heat exchanger exceeds safe operating parametersoften due to restricted airflow from a clogged furnace filter or a failing blower motorthis switch opens the circuit