Spin Worked, but Agitation Did Not
On this WTW4815EW1, the washer could move the basket in spin. The unresolved question was whether the drive mechanism changed into the agitation position.
Why the working spin mode mattered
The initial discussion listed the lid circuit, timer or control, motor, pump and coupling. Once the technician clarified that the washer spun normally but did not agitate, a total motor or drive interruption became less consistent with the observed pattern.
A similar symptom can have a different cause on another washer. This model-specific case records a diagnostic direction, not a confirmed parts recommendation.
Why the shift actuator became the leading test
The WTW4815EW1 uses a mechanism that must change drive state between agitation and spin. The source identified the shifter or shift actuator as the likely branch when one mode worked and the other did not. The model number was then used to locate the appropriate diagnostic information.
No error code, actuator test or completed replacement was reported, so other mechanical, wiring and control causes remain open.
What a technician should verify
- Command agitation and spin separately with the model-specific service procedure.
- Observe whether the shift mechanism changes position.
- Inspect actuator mounting, linkage, connector and harness with power disconnected.
- Confirm the commanded output before replacing the actuator or control.