York TM9E furnace 5 red flashes: Rollout Switch Open
Safety issue — act now
What do 5 red LED flashes mean on a York TM9E furnace? The manual-reset rollout safety switch has opened. The control goes into a hard lockout that York permits clearing only after the problem is corrected.
This condition involves the gas or combustion side. If you smell gas or a CO alarm sounds: leave, then call your gas utility. Diagnostic info here is reference — combustion repairs are for licensed technicians. All six emergency signs →
A qualified technician must investigate combustion, the inducer, heat exchanger and burners before the rollout switch is reset. Homeowners should not reset the switch or clear the lockout.
Parts for this code
No model-verified part number is listed here. Have the fault diagnosed and the correct part matched to your furnace before ordering.
Questions about this code
What do 5 red LED flashes mean on a York TM9E furnace?
The manual-reset rollout safety switch has opened. The control goes into a hard lockout that York permits clearing only after the problem is corrected.
How do I fix York TM9E furnace 5 red flashes?
If you smell gas or hear a CO alarm, go outside without operating electrical switches and call the gas utility or 911 from outdoors. Without those signs, keep the furnace off, leave the rollout switch and lockout alone, and call for service.
How much does it cost to fix York TM9E furnace 5 red flashes?
Expect investigation of combustion, the inducer, burners and heat exchanger before any reset. Repair cost depends on which of those the technician finds responsible.
Applies to
TM9E
Different York generations use different code maps. If your series isn't listed, don't assume this meaning — check your blower-door label.
Verified against YORK TM9E Series Installation Manual — Single Stage ECM Residential Gas Furnaces, p.34
Last verified 2026-10-07 · page updated 2026-10-07 · how we verify
Related York furnace codes
These codes use the same york tm9e single-stage ecm tri-color led control system.