Bosch Washer Error Code F:44

The F:44 error code on a Bosch washer indicates a failed self-test of the relay responsible for reversing the direction of the drum motor. During normal wash cycles, the drum motor must alternate rotation direction to properly agitate and tumble laundry. A dedicated relay (or triac circuit) on the main control board handles this directional switching. When the control module runs its internal diagnostic and detects that this switching component is not responding correctly, it logs F:44 as a remanent error, meaning the fault is stored in memory and will persist even after the machine is powered off.

The specific component identified in this fault is a control triac, which is a solid-state switching device on the main control board. Triacs are used in motor control circuits to regulate current direction and speed without mechanical contacts. A broken or shorted triac will prevent the motor from receiving the correct signals to reverse rotation, causing the diagnostic test to fail. Unlike a simple triac that has merely drifted out of spec, the term "broken" here typically points to a hard failure such as a short circuit across the triac's terminals, which can sometimes be confirmed by visual inspection or resistance testing of the component.

Because this is classified as a remanent error, the fault code will not clear simply by unplugging and replugging the machine. It must be reset through the washer's test mode sequence. If the fault returns immediately after reset, the control board itself is the likely root cause and will require replacement. Technicians should also inspect wiring harness connections between the control board and the motor before condemning the board outright.