LG Refrigerator Error Code 25E

The 25E code means the freezer defrost heater circuit has a detected fault. Specifically, the refrigerator's control board logged the error because the defrost cycle did not finish within 80 minutes of continuous heater operation. The root cause can be a failed heater element, an open thermal fuse, a short circuit, broken wiring, or poor connector contact at the heater housing.

The 25E code itself is not an immediate safety emergency, but it does mean your freezer is not defrosting properly. Over time, frost buildup will block airflow and cause temperatures to rise in both the freezer and refrigerator compartments, putting food safety at risk. It is advisable to address the fault promptly rather than leaving it unresolved.

A power reset may temporarily clear the 25E code from the display, but it will not resolve the underlying electrical fault in the defrost heater circuit. If the heater, thermal fuse, or wiring has failed, the defrost cycle will fail again and the code will return. The fault must be diagnosed and the defective component repaired or replaced for the error to clear permanently.

A knowledgeable DIYer comfortable with basic electrical testing can diagnose this error by disconnecting the CN70 connector on the Main PCB and measuring resistance between the Brown and Gray wires with a multimeter. A reading of 0 ohms or infinite resistance pinpoints the fault to the heater circuit. Replacing a thermal fuse or heater element is within reach for many DIYers, but working with refrigerator wiring does require care and some comfort with disassembly.

Repair cost depends on which component has failed. A replacement thermal fuse or bimetal limiter is typically an inexpensive part, with DIY repair costs ranging from roughly $10 to $30 in parts. A defrost heater element replacement generally falls in the $20 to $60 range for the part. If the Main PCB requires replacement, costs rise significantly, often falling between $150 and $350 for the part alone, plus labor if a technician is involved.