Goodman GMEC960803BN Error Code Red 2 Flashes: Pressure Switch Stuck Closed / Inducer Error

What Does Code Red 2 Flashes Mean?

Two red flashes on the Goodman GMEC960803BN's Integrated Control Module mean the pressure switch is stuck closed. Before starting, the board checks that the pressure switch is open (proving there is no draft yet). It should only close after the inducer motor starts and pulls a vacuum. If the board sees the switch already closed at rest, it cannot verify the safety interlock and refuses to fire.

A pressure switch senses inducer draft to confirm the venting is working before gas is allowed. If its contacts are physically stuck closed, or the switch wires are shorted together, the board gets a permanent "closed" reading. Less often, the inducer relay on the control board itself is stuck closed, so the inducer runs when it should not, holding the switch closed.

This is the mirror image of the stuck-open pressure switch codes. Red 3 flashes and red 3 double flashes mean the first- and second-stage switches will not close when they should; red 2 flashes means a switch will not open when it should. All are high-severity because they involve the combustion-venting safety chain, and none are homeowner-repairable.

What You'll Notice

• The furnace will not start and the board flashes red twice
• The inducer motor may run when it should be idle, or the furnace seems stuck before ignition
• No ignition sequence begins even on a valid heat call
• The fault appears immediately at the start of a heat call rather than after the inducer runs
• Repeated failed starts with the same two-flash code

Common Causes

How This Is Diagnosed

Because the board sees the pressure switch closed at rest, a technician verifies the switch state with power removed and checks whether it is mechanically stuck closed or its wiring is shorted. The inducer relay on the control board is also checked to confirm it is not stuck closed and energizing the inducer at the wrong time. Pressure switch and control-board work are professional repairs and are not safe to attempt as DIY.

When to Call a Professional

This code involves components that are not homeowner-serviceable, so have a licensed HVAC technician diagnose and repair it. Keep in mind:

• The two red flashes appear before the inducer would normally run
• The inducer runs at times when the furnace should be idle
• The code persists after power is cycled
• Any diagnosis involving the pressure switch, its wiring, or the control board relay

✓ Verified against manufacturer service manual — March 2026