Lennox
E201
LockoutIndoor blower communication
IFC lost serial talk with the VS indoor blower (including a motor that never powered up).
Walk E201 in Diagnose
6 plates — walk the one on the cabinet
First check
1 Reseat the serial plug
On Lennox EL195NE this is a communicating / serial ECM, not a tap motor. Kill power, reseat the 14-pin (or OEM serial plug) at the motor and at the IFC. Pins straight, no corrosion. Motor harness seated at IFC and module. 120/240 at the motor, not just the IFC.
Expect: Plug fully seated both ends. Correct motor for this cabinet.
The rest of the walkthrough is Diagnose.
On the plates
- Motor harness seated at IFC and module. 120/240 at the motor, not just the IFC.
- After a board or motor swap this is usually P-menu / wrong motor — see E202 / E203.
- If someone put an EL296V VS motor in this cabinet, E201 / E202 / E310 show up. Put the CT motor back.
- A stock tap motor that will not run is a tap/profile / harness / module problem — not E201.
- Harness, motor power, then motor. This is a communicating VS — same family as EL296V E201, native here.