MEDIUM URGENCY

York 2 Red Flashes — Pressure Switch Stuck Closed

2 red flashes

Pressure switch stuck closed.

Brand: York (Also covers Coleman, Luxaire) | Equipment: Gas Furnace

What This Code Means

2 red flashes means the pressure switch contacts are stuck closed when they should be open (inducer not running).

Most common

What: Contacts welded or jammed.

How to check: Test continuity at switch with inducer off.

Fix: Replace switch.

Shop parts

Less common

What: Board misreads switch state.

How to check: Test switch independently.

Fix: Replace board.

Shop parts

DIY?

Yes — pressure switch replacement is straightforward.

Cost?

$25-60 for the switch.

Same on Coleman?

Yes.