Coleman, York, Luxaire furnace 11 red flashes (code 11): limit open, blower

Short answer On York, Coleman and Luxaire furnaces, 11 red flashes mean the main limit stayed open more than 5 minutes, and the manuals point to a failed blower motor or wheel. Repairing the blower and any lockout reset are technician work. See what to check

Furnace control LED

11 red flashes

“Check blower motor/wiring”

Technician

Printed on 29 model series · 16 documents

TM8X, TMLX, TM9E, TM9T, TG9S, GG9S, TM9X, TP9C, YP9C, CP9C, LP9C, TM9M, TM9V, DGAX, RGF19*E, TM9Y, TM9V*C, TM8V*C, TMLV*C, TM8T*MP, TMLT*MP, TG8S*MP, TGLS*MP, GG8S*MP, GGLS*MP, TPLC*C, YPLC*C, CPLC*C, LPLC*C · 998492-UIM-C-1013 p. 26; 6019630-UIM-F-0423 p. 36; 1083286-UIM-A-0114 p. 39; 1083287-UIM-A-0114 p. 40; 1083288-UIM-A-0114 p. 38; 5750151-UIM-G-0423 p. 39; 1083293-UIM-A-0114 p. 41; 1083294-UIM-A-0114 p. 44; 5483101-UIM-A-1118 p. 29; 6019627-UIM-F-0423 p. 36; 5750144-UIM-H-0423 p. 37; 5750149-UIM-I-0423 p. 40; 5750148-UIM-D-0423 p. 30; 995472-UIM-B-0713 p. 28; 998491-UIM-B-1013 p. 29; 987158-UIM-B-1013 p. 32

The lamp blinks 11 times, then pauses. It shows the count only; the timing on your board may differ.

What it means

On most York, Coleman and Luxaire furnaces, 11 red flashes mean the main limit switch opened and stayed open for more than 5 minutes. The installation manuals say this is usually caused by a failed blower motor or blower wheel. The control enters a hard lockout, and power has to be cycled off and on to reset it after the problem has been corrected (6019630-UIM-F-0423, p. 34; 6125049-UIM-C-0624, p. 50; 6553957-UIM-A-0626, p. 90).

In most of the installation manuals the code follows 4 red flashes: when the main limit opens, the LED shows 4 red flashes, and if the limit has not closed within 5 minutes, the control treats the blower as not working and begins to flash 11 red flashes (5750149-UIM-I-0423, p. 38; 6125049-UIM-C-0624, p. 49). On the TM9V*C, TM9V, TM8V*C, TM9T and TM8T*MP the 11 red flashes entry gives a window of more than 5 and less than 15 minutes, and the 4 red flashes entry adds that after 15 minutes the control changes to 5 red flashes (5750149-UIM-I-0423, p. 38; 1083286-UIM-A-0114, p. 37).

The label printed with the wiring diagram says “Check blower motor/wiring” on most series. On the Y81E, RL18, Y82E, Y91E, RG19, Y92E and Y92V it says “LS/ROS OPEN FROM 5 TO 15 MIN.”, while the text of the same manuals says more than 5 minutes (6100757-UIM-C-1124, pp. 58, 62; 6553957-UIM-A-0626, pp. 90, 96). In the Y92V legend LS is the limit switch and ROS the rollout switch (6553957-UIM-A-0626, p. 96).

The modulating YP9C, CP9C, LP9C, TP9C, TM9M and TPLC-family manuals call it “Main blower failure”: the main limit opens and fails to reclose within 5 minutes, which indicates that the blower motor or blower wheel has failed. They do not describe a lockout for this code (5750151-UIM-G-0423, p. 37; 987158-UIM-B-1013, p. 30).

The documents give this code as a count of flashes. The only series here that also shows it as a number is the Y92V, whose display reads 11 (6553957-UIM-A-0626, p. 90).

Check these first

The owner’s manuals 1010352-UUM-O-0423 and 6100761-UUM-C-1124 have no entry for 11 red flashes. The only red pattern they list is “Rapid red flashes”, with the instruction to contact your local dealer, contractor, or service provider (1010352-UUM-O-0423, p. 5). The LED is behind a clear view port in the blower compartment door (1010352-UUM-O-0423, p. 5).

For a furnace that is not operating correctly, the manual lists visual checks to make before that call. They are the same for every code. In the manual’s order:

1. Check that electrical power to the furnace is turned on (1010352-UUM-O-0423, p. 5).
2. Check that the manual gas shut-off valve in the gas piping supply is in the on position (1010352-UUM-O-0423, p. 5).
3. Check that the on/off switch on the gas valve is in the on position (1010352-UUM-O-0423, p. 5). The manual reaches this switch by setting the thermostat to its lowest setting, turning off all electric power to the appliance and removing the furnace burner access panel or door (1010352-UUM-O-0423, p. 4). Use only your hand on the switch, never tools; if it does not move by hand, do not try to repair it, and call a qualified service technician (1010352-UUM-O-0423, p. 3). Turning it back on follows the full operating instructions: turning the furnace off and on.
4. Check that the furnace blower access panel or door is correctly positioned. The electrical power supply is cut off if this door is removed (1010352-UUM-O-0423, p. 5).

6100761-UUM-C-1124 lists the same checks (pp. 10–11).

The hard lockout is reset in the installation manuals by cycling power after the problem has been corrected (6019630-UIM-F-0423, p. 34). The owner’s manuals do not describe a reset, and the blower is not among the owner’s checks.

When to call a licensed technician

• The blower motor and the blower wheel (6019630-UIM-F-0423, p. 34; 5750151-UIM-G-0423, p. 37).
• The limit switch wiring and the limit switch itself; the Y92V table lists these together with the blower motor (6553957-UIM-A-0626, p. 90).
• The hard lockout reset after the repair (6019630-UIM-F-0423, p. 34).

Call as well if 11 red flashes come back. The owner’s manual says the user must not purchase, install, or replace any components of the furnace (1010352-UUM-O-0423, p. 5).

Notes for different models

Series	Label on the wiring diagram	Installation manual text	Source
TM9V*C; TM8V*C, TMLV*C (2013 and 2023); TM9V (2014); TM9T; TM8T*MP, TMLT*MP	“Check blower motor/wiring”	Limit circuit open more than 5 and less than 15 min; usually a failed blower motor or blower wheel; hard lockout	5750149-UIM-I-0423, pp. 38, 40; 5750148-UIM-D-0423, pp. 27, 30; 1034867-UIM-B-0913, pp. 28, 31; 1083294-UIM-A-0114, pp. 42, 44; 1083286-UIM-A-0114, pp. 37, 39; 995472-UIM-B-0713, pp. 26, 28
TG9S, GG9S; TM9X; TM9E (2014 and 2023); RGF19*E; TM9Y; TG8S*MP, TGLS*MP, GG8S*MP, GGLS*MP; TM8X, TMLX	“Check blower motor/wiring”	Main limit open more than 5 min; usually a failed blower motor or blower wheel; hard lockout	1083287-UIM-A-0114, pp. 38, 40; 1083288-UIM-A-0114, pp. 36, 38; 1083163-UIM-A-0214, pp. 36, 38; 6019630-UIM-F-0423, pp. 34, 36; 6019627-UIM-F-0423, pp. 34, 36; 5750144-UIM-H-0423, pp. 35, 37; 998491-UIM-B-1013, pp. 27, 29; 998492-UIM-C-1013, pp. 24, 26
Y81E, RL18, Y82E, Y91E, RG19, Y92E	“LS/ROS OPEN FROM 5 TO 15 MIN.”	Same as the row above	6100757-UIM-C-1124, pp. 58, 62; 6100760-UIM-C-1124, pp. 58, 62; 6142403-UIM-C-1124, pp. 59, 63; 6125049-UIM-C-0624, pp. 50, 52; 6125051-UIM-C-0624, pp. 50, 52; 6154201-UIM-B-1224, pp. 78, 82
Y92V	“LS/ROS OPEN FROM 5 TO 15 MIN.”, display 11	Same as the row above; checks: limit switch wiring, limit switch closed, blower motor	6553957-UIM-A-0626, pp. 90, 96
YP9C, CP9C, LP9C, TP9C; TM9M; TPLC*C, YPLC*C, CPLC*C, LPLC*C	“Check blower motor/wiring”	“Main blower failure”: main limit fails to reclose within 5 min; blower motor or blower wheel has failed; no lockout described	5750151-UIM-G-0423, pp. 37, 39; 1083292-UIM-A-0114, pp. 41, 43; 1083293-UIM-A-0114, pp. 39, 41; 987158-UIM-B-1013, pp. 30, 32
DGAX	“Check blower motor/wiring”	No text; label only	5483101-UIM-A-1118, p. 29

The DGAA and DGAH owner’s manual for manufactured-home furnaces has no 11 FLASH entry in its list (5165697-BUM-C-0818, p. 8).

Related York, Coleman and Luxaire codes

• 4 red flashes “Airflow problem OR open fuse”
• 5 red flashes “Flame Rollout OR open fuse”

See also

• Heat pump vs gas calculator
• Furnace and HVAC tax credits for 2025 and 2026: 25C ended after 2025
• Form 5695 for 2025 and 2026: QMID, lines, carryforward
• How a gas furnace lights, and how the control board blinks a failure code
• Home maintenance schedule from the manuals: monthly to yearly
• Winter home maintenance checklist: furnace, boiler, water heater
• Water heater or furnace closet: clearance and air requirements

Other gas furnaces: Carrier, Goodman, Lennox, Rheem furnaces, Trane and American Standard

All York, Coleman and Luxaire codes

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