Samsung Refrigerator Error Code 52Er

The 52Er code indicates a communication failure between the main MICOM controller and the WIFI module inside the refrigerator. The two components communicate over a dedicated data connection, and 52Er is logged when that communication breaks down. This error affects smart and connectivity features but typically does not interfere with core cooling functions. The cause is usually a loose cable connection or a failed component.

A power reset by unplugging the refrigerator for a few minutes may temporarily clear the code, but if the underlying cause is a loose connection or a failed component, the error will return. Resetting is not a permanent fix and should be used only to confirm the fault is active before beginning diagnostics. A lasting repair requires addressing the physical connection or replacing the faulty part.

If the fix is simply reseating a loose cable, there may be no parts cost at all, though a service call from a technician typically runs in the range of $75 to $150. Replacing a WIFI module generally costs between $30 and $100 for the part, while a main PCB replacement can range from $100 to $300 or more depending on the model, plus labor. Getting a diagnostic estimate before authorizing repairs is always a good practice.

The first step is to check the cable connections between the main PCB and the WIFI module, which is something a confident DIYer can attempt after unplugging the refrigerator. If the connections look secure and the error persists, the WIFI module or main PCB will need to be replaced, which requires more technical experience and comfort working with control boards. If you are unsure about working inside the appliance, a qualified technician is the safer choice.

The 52Er error relates to the communication link between the main controller and the WIFI module, not the refrigeration system itself. In most cases, the compressor and cooling functions continue to operate normally, so food safety is generally not an immediate concern. However, you should monitor the interior temperature to confirm the fridge is still cooling properly while the issue is being diagnosed.