Speed Queen · Washer Moderate

Er ub — Speed Queen Er ub — Fatal Unbalance Error

Er ub is a fatal unbalance fault tied to the unbalance switch hardware — the wires to the unbalance switch are broken or disconnected, the switch is stuck closed, or a shock absorber is broken. (This differs from the non-fatal Er vb, which simply means the load could not be balanced.)

Keep using it?
Yes, with caution
DIY difficulty
Moderate

How to fix it

  1. Unplug the washer and inspect the unbalance switch and its wiring for damage or disconnection.
  2. Check the suspension shocks for breakage.
  3. Replace the unbalance switch or shock as needed.

Why it happens

Typical signs: Washer stops with a hard fault · Loud banging during spin · Er ub on the display

  • Broken/disconnected unbalance-switch wiring The harness to the unbalance switch is damaged or unplugged.
  • Stuck unbalance switch The switch is stuck in the closed position.
  • Broken shock absorber A failed suspension shock lets the tub move too far.

Parts you may need

If diagnosis points to a failed part, these are the common replacements. As an Amazon Associate we earn from qualifying purchases.

  • Washer Shock Absorber / Suspension Kit Common replacement
    Amazon →

More Speed Queen washer codes

E1 E1 — Water fill timeout Er bb Er bb — Broken Belt Error Er dL Er dL — Door Lock Fatal Error Er dr Er dr — Drain Error Er FL Er FL — Fill Error Er nF Er nF — No Water Flow Error

All Speed Queen codes → All washer codes →

Always unplug an appliance before servicing it. This guide is for informational purposes and is not a substitute for a qualified technician.