Samsung Refrigerator Error Code 27

Error code 27 on a Samsung refrigerator indicates a P-M Communication error, meaning the panel control board and the main control board have lost communication for more than 10 seconds. The refrigerator signals this by repeatedly cycling the LCD display on and off while sounding a buzzer alarm. The communication path runs through the upper hinge connector and freezer door wiring, making those areas the first places to inspect.

A power reset may temporarily clear the error display, but if the underlying wiring or component issue is still present, the code will return once the refrigerator powers back up and communication fails again. A reset is useful for confirming whether the error is intermittent, but it does not repair the root cause.

If the problem is a loose connector or minor wiring repair, costs may be limited to a service call fee in the range of $75 to $150. If a wiring harness needs replacement, expect parts and labor to run between $100 and $250. Panel PCB or main PCB replacement can push repair costs higher, typically ranging from $200 to $500 or more depending on parts availability and labor rates in your area.

Start by checking the cable connections between the panel PCB and the main PCB, including the upper hinge connector and the freezer door wiring harness. Look for loose connectors, bent or corroded pins, and any visible wire damage near flex points at the hinge. If all wiring checks out, the panel PCB or main PCB may need to be tested and potentially replaced.

Error code 27 itself does not indicate a hazard such as a gas leak or electrical short, but it does mean the control boards are not communicating properly, which can affect temperature regulation and other functions. If the refrigerator is not maintaining safe food storage temperatures, the contents should be moved until the issue is resolved.