It remains 100% backwards compatible in fit

This panel is designed for heat pumps that energize the reversing valve (O terminal) on a call for cooling

ensuring stable flame ignition and preventing high-limit trips or carboning issues caused by overfiring

5 amp efficiency under load

Nordyne 632636 Pressure Switch 320788-703 It remains 100% backwards compatibleThe Nordyne 632636 Pressure Switch is a critical safety component designed for specific HVAC furnace systems, ensuring the inducer motor generates sufficient vacuum before allowing the ignition sequence. This differential air pressure switch features a precise set point of 0. 45" WC, making it a direct replacement for failing or stuck open switches in Miller, Intertherm, and Nordyne units. When diagnosing furnace pressure switch failure, verify that