York Error Code 10 red flashes: Gas valve powered with no heat call (Furnace)
York error code 10 red flashes on a furnace means: Gas valve powered with no heat call. It is also called York diagnostic code 10 red flashes.
Homeowner? What York code 10 red flashes means for you
Stop and call Your furnace is reporting: Gas valve powered with no heat call. This code is a safety shutdown. Turn the furnace off and call a licensed technician. Do not keep resetting it. If you smell gas, leave the house and call your gas utility or 911 from outside.
Safe things you can check yourself
- Check the thermostat: right mode (Heat or Cool), set a few degrees past room temperature, and fresh batteries if it uses them.
- Make sure the unit has power: its on/off switch (often looks like a light switch near the unit) is ON and the breaker in the electrical panel is not tripped.
Call (647) 657-2977Book a service call
Licensed technicians serving Vaughan, Toronto and the GTA.
What does York error code 10 red flashes mean?
The gas valve is energized when there is no call for heat. The blower and inducer run and no ignition happens until it clears.
Applies to: York/JCI residential gas furnaces: York UTEC IFC furnaces, York White-Rodgers IFC furnaces, York TM9V
Common causes of York code 10 red flashes
- Gas valve miswired
- Shorted valve wiring
- Board relay welded
York models that use code 10 red flashes
TM9V040A10TM9V060B12TM9V080B12TM9V080C16TM9V100C16TM9V100C20TM9V120D20
Other York Furnace codes
All York Furnace error codes →
York code 10 red flashes: homeowner questions
What does York code 10 red flashes mean?
Gas valve powered with no heat call. The gas valve is energized when there is no call for heat. The blower and inducer run and no ignition happens until it clears.
Is it safe to keep using my furnace with code 10 red flashes?
No. Code 10 red flashes is a safety shutdown, so keep the furnace off until a licensed technician has checked it.
Can I reset York code 10 red flashes myself?
Do not keep resetting it. Repeated resets can hide a safety problem; a licensed technician needs to find the cause.
Who can fix York code 10 red flashes near me?
Aurora Star Tech Inc. repairs York furnaces in Vaughan, Toronto and across the GTA. Call (647) 657-2977 or book a service call online.
Homeowner help: Furnace Not Turning On: What to Check · Furnace Blinking Light: What the Flash Codes Mean
Troubleshooting guides
- Blowing cold air All brands · Furnace
- No heat All brands · Furnace
- Short cycling All brands · Furnace
Source: York All JCI single-two-stage furnaces with UTEC IFC board codes ST-045-09.pdf - section Fault Code LED Flashes; York JCI single-two-stage furnaces with White-Rodgers-Emerson IFC (older installed base) codes ST-028-07.pdf - section Fault Code Sheets; York TM9V - -M9V 96% two-stage variable speed installation 1083294-UIM-A-0114.pdf - section Furnace Control Diagnostics. Written in our own words as a summary; always check the original manual.
General guidance for qualified technicians. The manufacturer's installation and service manual and local codes always take priority. Aurora Star Tech is not affiliated with, endorsed by or sponsored by any equipment manufacturer; brand and model names are used only to identify equipment and belong to their owners.