1
1 – Module failure (refrigerator)
HIGH
The control has logged a fault it classifies as a module or control-board problem. Unplug the refrigerator for one minute to clear a one-time glitch, then restore power and watch for normal cooling. If the code returns or cooling is unstable, a technician should test power, grounds, and the affected module before replacing parts.
2
2 – Defrost issue (refrigerator)
MEDIUM
Points to the defrost subsystem—heaters, defrost thermostat or sensor, or defrost control strategy. You may notice frost on the evaporator cover or warm fresh food while the freezer still feels cold. Avoid chipping ice inside the cabinet; schedule service if frost builds quickly after a manual defrost.
15–18
15–18 – Fan issues (refrigerator)
MEDIUM
The appliance is reporting a fault tied to one or more internal fans—evaporator, condenser, or multi-speed air movers depending on model. Listen for rattles, no spin after door switches release, or warm zones with a quiet cabinet. Blocked air passages can mimic fan errors; if cleaning vents does not help, motors, blades, or control outputs need checking.
20–21
20–21 – Heater issues (refrigerator)
MEDIUM
Associated with electric heaters used in defrost or compartment conditioning. Failed heaters can cause ice buildup or temperature drift. These circuits run on line voltage in many models—do not probe live heaters yourself. Service verifies continuity, relays, and control commands.
22–25
22–25 – Water / ice sensors (refrigerator)
MEDIUM
Covers sensing for the water and ice system—fill, level, ice presence, or related inputs. Slow ice, hollow cubes, or dispenser oddities may appear. Confirm the water supply valve is on and the filter is not overdue; persistent codes after that point to valves, fill tubes, or ice-maker sensors.
26–29
26–29 – Ice maker motor / solenoid (refrigerator)
MEDIUM
Indicates trouble with ice maker mechanical motion or the water inlet solenoid. The ejector may stall, or the fill valve may not open when commanded. Foreign ice jams are worth clearing only when power is off and the manual allows; burned motors or stuck valves usually need parts.
30–31
30–31 – Display harness (refrigerator)
MEDIUM
Suggests communication or wiring problems between the user interface and main control. Dim segments, dead keys, or random blanks can accompany these codes. Reseating flexible harness connectors (with power removed) is a technician task; pinched door harnesses are a frequent find on built-ins.
3–4
3–4 – Temperature sensor errors (refrigerator)
MEDIUM
Covers errors the software groups with refrigerator compartment temperature sensing. Erratic set points, rapid alarm cycling, or sections that feel wrong for the display can accompany these codes. Sensor harness connectors and the sensor body itself are common service items after the control confirms the fault.
5–6
5–6 – Freezer sensor errors (refrigerator)
MEDIUM
Relates to freezer-zone temperature feedback. If the freezer reads normal but the code persists, the issue may be wiring or a failed thermistor rather than actual temperature. Repeated occurrences usually require measurement and replacement of the affected sensor or harness repair.
7–8
7–8 – Evaporator sensor errors (refrigerator)
MEDIUM
Indicates a problem with evaporator-area sensing used for cooling and defrost decisions. Frost patterns, long run times, or poor pull-down can show up with bad evaporator sensors. Service typically involves verifying resistance or voltage at the sensor and replacing it if out of spec.
9–10
9–10 – Refrigerator sensor errors (refrigerator)
MEDIUM
Additional refrigerator-compartment sensor codes beyond the 3–4 group. Symptoms overlap with uneven cooling or alarms with no obvious cause. A technician will compare live temperatures to sensor readings and inspect connectors in the fresh-food circuit.
