LG Refrigerator Error Code Er (Ice Maker Unit)

The Er code indicates a detected fault in the ice maker unit, specifically pointing to a failed ice maker motor, a faulty Hall IC sensor, a broken or shorted lead wire, or a problem with the main PCB's drive circuit for the ice maker. This code appears during the refrigerator's LED diagnostic check routine. It signals that the control board cannot confirm proper operation of the ice maker motor system.

The refrigerator's cooling functions are generally separate from the ice maker circuit, so food safety is not immediately at risk. However, the ice maker will not operate correctly while this fault is active. It is best to resolve the error promptly to prevent any secondary issues from an undetected short circuit in the harness.

A reset may temporarily clear the code from the display, but if the underlying fault in the motor, Hall IC, wiring, or PCB drive circuit is still present, the error will return when the next diagnostic check runs. Resetting is useful for confirming whether the fault is intermittent, but it is not a substitute for diagnosing and correcting the actual hardware problem.

Some steps are DIY-friendly, such as inspecting the wiring harness for visible damage, checking connector pins at CON8 for corrosion, and testing motor resistance with a multimeter. If the motor reads outside 18 to 22 ohms or the wiring is damaged, replacing the ice maker unit or harness is a moderate repair that many technicians handle. Main PCB replacement typically requires more advanced diagnostics and soldering skills.

Repair costs vary depending on the root cause. A replacement ice maker motor assembly typically ranges from $40 to $120 for parts. If the main PCB is at fault, board replacement can run $150 to $350 or more depending on the model. Adding professional labor generally brings total repair costs into the $150 to $450 range depending on what component needs to be replaced.