Fisher & Paykel Washer Error Code 103

Error code 103 on a Fisher & Paykel washer indicates a slave display communications timeout. This fault occurs when the main control board loses communication with the secondary display module, commonly referred to as the slave display. The two boards communicate via a serial data bus, and when the main controller does not receive an expected response from the slave display within a defined timeout window, it logs this fault code and halts normal operation.

The slave display module is responsible for receiving operational data from the main controller and presenting it to the user, including cycle status, remaining time, and other indicators. A communications timeout means the data signal between the two boards has been interrupted, corrupted, or is simply not arriving. This can result from a wiring harness fault, a failed connector, a damaged slave display board, or in some cases a failure on the main control board itself that prevents it from sending or interpreting responses correctly.

Fisher & Paykel directs technicians to reference Fault Code 106 when diagnosing error 103. Fault Code 106 relates to display communications faults and provides the specific diagnostic pathway, including wiring checks and board substitution steps. Technicians should follow that diagnostic sequence in full before condemning either control board, as the root cause is often a loose or corroded connector in the communications harness rather than a failed board.