LG Refrigerator Error Code IPM

The IPM error on an LG refrigerator stands for Intelligent Power Module fault. It indicates that the compressor drive PCB has detected an over-current condition, typically caused by a short circuit within the IPM component or elsewhere on the drive board. The IPM is responsible for controlling power delivery to the inverter compressor, so this fault can prevent the refrigerator from cooling properly.

Start by unplugging the refrigerator for a few minutes and restoring power to see if normal operation resumes. If the code returns, a technician needs to inspect the IPM component on the compressor drive PCB for visible burn damage and test for a short circuit at diagnostic point A. Depending on findings, the repair will involve replacing either the IPM module, the full compressor drive PCB, or in some cases the inverter compressor itself.

Repair costs vary depending on which component has failed. Replacement of the compressor drive PCB typically falls in the range of $150 to $400 for parts alone, with additional labor costs depending on your service provider. If the fault has also damaged the inverter compressor, total repair costs can be significantly higher and may approach or exceed the value of an older unit. Getting a diagnostic assessment before committing to repairs is recommended.

A power reset is the recommended first diagnostic step and may clear the code if the fault was caused by a temporary power surge or transient over-current event. However, if the IPM module is physically burnt or a short circuit is present at point A on the drive board, the error will return after reset. Persistent codes after reset indicate a hardware failure that requires hands-on inspection and likely component replacement.

An IPM fault involving a burnt component or short circuit on the compressor drive board can present a risk if the refrigerator continues to operate in that condition. It is advisable to unplug the unit if you notice any burning smell, visible scorch marks on the back panel, or if the error persists after a reset. A qualified technician should inspect the board before the appliance is returned to regular use.