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Pressure switch open during inducer operation.
Brand: Nordyne (Also covers Frigidaire, Maytag, Westinghouse, Tappan, Gibson, Intertherm, NuTone, Miller, Broan) | Equipment: Gas Furnace
2 flashes on a Nordyne-family furnace means the pressure switch did not close after the inducer motor started. Usually means insufficient draft.
What: Snow, ice, debris, or disconnected vent pipe blocks proper venting.
How to check: Inspect outdoor exhaust outlet.
Fix: Clear blockage.
Shop partsWhat: Inducer can't create enough draft.
How to check: Listen at startup - should run smoothly.
Fix: Replace inducer.
Shop partsWhat: Switch won't close on proper pressure.
How to check: Tech test with manometer.
Fix: Replace switch.
Shop partsTry our interactive symptom diagnostic tool or browse Nordyne parts.