HIGH URGENCY

York 10 Red Flashes — Gas Flows With Valve Closed

10 red flashes

Gas continues to flow when valve should be closed — faulty valve.

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

What This Code Means

10 red flashes means gas continues to flow even when the gas valve is supposed to be closed. Faulty gas valve.

Most common

What: Valve doesn't fully close.

How to check: Tech valve test.

Fix: Replace gas valve.

Shop parts

Is York 10 red flashes dangerous?

Yes — uncontrolled gas flow. Shut off gas immediately.

DIY?

No — professional only.

Same on Coleman?

Yes.