Nordyne 626417R Limit Switch 321702-401 allowing the ignition sequence to

allowing the ignition sequence to continue

verifying the furnace heat exchanger price and compatibility with the specific model number is essential

ensuring the correct BTU input and manifold pressure for optimal combustion

Designed with a corrosion-resistant brass body and 3/8-inch flare fittings

While the EX4 series has bi-flow versions (e

Nordyne 626417R Limit Switch 321702-401 allowing the ignition sequence toAs 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