1. Evap fan motor iced or seized — SY EF, fridge warm, freezer cold
What it is: Frigidaire's evaporator fan motor sits behind the freezer rear panel. When the bushing fails or ice locks the blade, the fan stalls — freezer can still hold cold but no air moves to the fresh-food side. SY EF points to this evaporator fan circuit.
Fix: Thaw and clear any ice, replace OEM fan motor + blade kit. Inspect defrost heater + sensor as the root cause (don't replace the fan and skip the defrost check, or it ices again).
Typical all-in: $245–$385 all-in
2. Defrost-heater burnout — frost buildup, both compartments warm slowly
What it is: Frigidaire's defrost heater is an open-coil glass tube under the evaporator coil. When it opens (visible break in the coil), the coil never defrosts and frost grows until airflow stops. The frost then ices over the evaporator fan, which can trigger SY EF.
Fix: Confirm the heater is open with the unit unplugged, replace OEM heater + clip set, reset the adaptive-defrost board. Verify a full defrost cycle ends with the coil clear.
Typical all-in: $285–$425 all-in
3. Damper assembly stuck — silent cabinet, fridge warm
What it is: On French-door FGHB / GRMC units the damper between freezer and fresh-food fails closed. Fridge warm, freezer normal, no airflow sound from the back wall.
Fix: Service-mode damper cycle test, OEM damper assembly replacement. Verify open-close before reassembly.
Typical all-in: $245–$385 all-in
4. Compressor 3-in-1 start relay / overload — both warm, clicking
What it is: Frigidaire side-by-sides use a combined start relay + overload + start capacitor (a black 3-in-1 module) clipped to the compressor. When it fails, the compressor clicks on and off every 3–5 minutes and never starts. Often the easiest big-ticket repair on a Frigidaire — far cheaper than condemning the compressor.
Fix: Swap the OEM 3-in-1 relay and verify the compressor starts. Test the compressor before declaring it dead.
Typical all-in: $285–$425 all-in
5. Main control board — SY CE code or erratic temps
What it is: Frigidaire main boards corrupt after a power surge — SY CE on the display = communication error between the main board and the user-interface board. Symptoms include missing temps, lights stuck, compressor not commanded.
Fix: Test the board and wiring, swap OEM main board (and the user-interface board on stubborn SY CE). Recommend a surge protector on the dedicated circuit on the way out.
Typical all-in: $345–$485 all-in