Samsung Washer Error Code 1AC7

The 1AC7 code indicates a communication error between the upper washer main PBA and the lower washer main PBA, with the fault detected on the upper washer side. This applies to Samsung washers with dual-unit configurations where two control boards must exchange data continuously. The machine stops operation because it cannot safely coordinate the two sections without a working communication link. Diagnosis starts with checking the connector connections between the two boards.

It is not recommended to continue using the washer while the 1AC7 error is active. The code indicates the two control boards are not communicating properly, which means the machine cannot coordinate the operation of both units correctly. Running the washer in this state could result in incomplete cycles or unexpected behavior. The fault should be diagnosed and resolved before resuming normal use.

Repair costs vary depending on the root cause. If the fix is simply reseating a connector, there may be no parts cost involved, though a service call fee typically ranges from $75 to $150. If a wiring harness needs replacement, parts and labor combined can range from $100 to $250. Replacing one or both main PBAs is the most expensive scenario, with total repair costs potentially ranging from $200 to $500 or more depending on parts availability and labor rates in your area.

Start by unplugging the washer and inspecting the wiring harness connectors that run between the upper and lower main PBAs. Reseat any loose connectors and look for damaged, corroded, or broken pins. If the connectors are secure and undamaged, check the harness for any pinched or broken wires. If the wiring is intact, one or both of the main PBAs may need to be replaced by a qualified technician.

A reset, performed by unplugging the washer for a few minutes and plugging it back in, may temporarily clear the error if it was caused by a transient communication glitch. However, if the underlying cause is a loose connector, damaged wiring, or a failed board, the 1AC7 code will return once the machine attempts to operate again. A reset alone is not a repair and should only be used as part of diagnosing the issue.