GE · Refrigerator Serious

Er FF — Freezer Evaporator Fan Failure

Er FF means Freezer Fan failure — the freezer evaporator fan motor is not running (often from frost on the blade or a failed motor), not a thermistor fault. Check the evaporator fan motor and for frost buildup. The freezer temperature sensor is a separate code.

Keep using it?
Limited use only
DIY difficulty
Hard
Verified against
geappliances.com ↗

How to fix it

  1. Unplug the unit.
  2. Remove freezer back panel to expose the thermistor (usually clipped near the evaporator).
  3. Ohm-check the thermistor at room temp (~10 kΩ) and again iced (~16 kΩ at 32°F).
  4. Inspect the harness back to the main board — repair any damage.
  5. Replace thermistor if out of spec.
  6. If sensor and wiring both test good, replace the main control board.

Why it happens

Typical signs: Er FF on display · Freezer over-cooling or warming · Compressor running constantly · Frost on items

  • Freezer thermistor open / shorted Wire break or sensor failure — most common cause.
  • Damaged sensor harness Pinched wire behind the back panel after a previous repair.
  • Corroded connector Moisture intrusion into the sensor plug — clean and reseat.
  • Main control board Board's sensor input has failed — last resort.

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.

  • GE freezer thermistor (WR55X10025) Common replacement
    Amazon →

More GE refrigerator codes

AF — Replace Air Filter Reminder CC CC — Fresh-food temperature out of range CI CI — Check Ice Maker dE dE — Defrost system fault dF dF — Defrost cycle failure E1 E1 — Not in GE's Official Fault-Code List

All GE codes → All refrigerator codes →

Always unplug an appliance before servicing it. This guide is for informational purposes and is not a substitute for a qualified technician. Verified against manufacturer documentation: geappliances.com.