Trane Furnace Code E10
Hard lockout
The control is not getting a response from the variable-speed inducer motor, or the two microcontrollers on the board cannot talk to each other.
Manual wording: “Inducer Motor no communication response, could be communication failure between two micro-controllers.”
Documented for: S9V2-VS furnaces with variable-speed draft inducer
Likely causes, most common first
- Inducer motor no communication response
- Communication failure between two micro-controllers
- Loose inducer motor harness
What you can safely check yourself
- Turn the furnace switch off and back on once to see whether the code clears
When to call a technician
Call a technician. Diagnosing the inducer motor's communication link means working in the live control compartment.
A Trane furnace throwing this code repeatedly has a reason — clearing the code without fixing the cause just hides it.
Source
- Installation, Operation, and Maintenance - Gas-Fired 2-Stage Condensing Variable Speed Furnaces with Variable Speed Draft Inducer (FNR-SVX001B-EN) (Trane, S9V2B040U3VSBB through S9V2D120D5VSBB (S9V2-VS) two-stage condensing variable-speed furnaces) · checked 2026-08-25