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The Nordyne 669073R Filter is an OEM replacement HVAC filter engineered for precise fitment in specific Nordyne
it ensures the flame rectification circuit receives the correct microamp signal back to the integrated furnace control (IFC) board
The Type II thermistor used in the TE-703-C-12-A-1 has a specific resistance-to-temperature curve that differs from Type III (CP curve)
This specific model focuses on core switching reliability
Trane THT2243 Thermostat The Nordyne 669073R Filter isThe Trane THT2243 Thermostat is a heavy duty 240V SPST thermostat specifically engineered as a limit control and temperature regulator for commercial and residential condenser units. Operating as a single pole, single throw (SPST) switch, this component is designed for 105Op73Cl operation, meaning it triggers an open circuit at 105F and restores the connection when temperatures drop to 73F. Professional technicians rely on this OEM replacement part
