How a Frigidaire refrigerator reports a fault
A Frigidaire refrigerator shows a small set of display alerts rather than a full fault table, so many problems are read by symptom rather than by a code. On many displays the letter “S” renders as a “5”, so SY EF and 5Y EF are the same alert. Knowing the alerts saves money, because long code lists copied from other manufacturers do not apply to a Frigidaire fridge.
The alerts you will see
PF is a power-failure alert — informational, dismissed from the panel. HI warns that a compartment is too warm, pointing at a door seal, dirty condenser coils, a stuck damper or a sensor. SH and OP are a shorted or open temperature sensor (thermistor). dF means the control sees no defrost circuit (heater, thermostat or relay), and SY EF is an evaporator-fan fault that leaves the fresh-food side warming while the freezer stays cold. SY CE is a communication fault between the boards, and DISP is an ice-jam alarm at the dispenser chute. A five-minute power reset clears some transient SY CE alerts.
Symptoms and when to call
Most faults are symptoms: not cooling traces to a frosted evaporator, a stalled fan or dirty coils; no ice or water to a clogged PureSource filter or a failed inlet valve; water under the crisper to a clogged defrost drain. For a recurring PF, a section that will not cool, a dF or SY EF alert, or a clicking compressor, an experienced, independent technician should diagnose the defrost components, fans or sealed system with the correct genuine OEM part. See the refrigerator error codes page or the error codes library, then book refrigerator repair.