Lennox · Furnace / HVAC
E201 Lost communication with blower motor
What this code means
The communicating control board has lost its signal link to the blower motor.
Most likely causes
- Wiring fault between the control board and blower motor
- Failing blower motor module
What to try first
Power-cycle the system; if the alert returns, this needs a technician to check the communication wiring.
Safety note: if this code returns after one clean reset, stop resetting it — repeated lockouts usually mean a real fault that needs a licensed technician. Never bypass a safety switch.
FAQ
What does Lennox error code E201 mean?
Lost communication with blower motor. The communicating control board has lost its signal link to the blower motor.
Can I fix Lennox code E201 myself?
Usually not. Power-cycle the system; if the alert returns, this needs a technician to check the communication wiring. If the code returns after one reset, it needs a licensed technician.
What causes Lennox code E201?
The most common causes are: wiring fault between the control board and blower motor; failing blower motor module.
Other Lennox furnace codes
All Lennox furnace error codes →
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This information may contain errors or not apply to your exact model — always double-check it against your appliance's own manual before acting. If there's any chance of a gas, fire, electrical, carbon monoxide, or other safety hazard, stop and call a licensed professional or the appropriate agency (e.g. your gas utility) instead of relying on this page alone.