LOW URGENCY

York 8 Red Flashes — Locked Out on Repeated Power Cycles

8 red flashes

Locked out due to frequent power cycling.

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

What This Code Means

8 red flashes means the control has been power-cycled too many times in a short period and entered lockout.

Most common

What: Repeatedly cutting and restoring power.

How to check: Stop cycling power.

Fix: Leave power on and wait.

Common

What: Loose connection causing intermittent power loss.

How to check: Check wiring at disconnect.

Fix: Tighten connections.

Less common

What: Brownouts or surges.

How to check: Check house electrical system.

Fix: Call electrician.

How to clear York 8 red flashes?

Stop cycling power and wait. Often clears on its own.

Is it serious?

Usually not — often user-induced.

Same on Coleman?

Yes.