Fisher & Paykel Washer Error Code U3

The U3 code means the washer detected that its fill time was too short, indicating water was already present in the tub from a previous cycle that did not drain completely. This is a drainage-related fault, not a water supply fault. Common causes include a blocked drain pump, a clogged drain hose, or an incorrect low-pressure (LP) configuration setting.

It is not recommended to continue running the washer while U3 is active. Residual water in the tub can cause mold and odor buildup, and repeated drain failures can strain the pump motor over time. Resolve the underlying drainage issue before running additional cycles.

Repair costs depend on the cause. If the fix is simply clearing a blocked drain pump filter or straightening a kinked hose, there may be no parts cost at all, with labor ranging from around $50 to $150 if a technician is called. If the motor control module or main electronics board needs replacement, parts and labor combined can range from $200 to $500 or more depending on the specific components required.

Start by checking the drain pump filter and pump housing for any debris blocking the impeller. Next, inspect the drain hose for kinks or clogs and confirm it is properly routed. If the machine is set to LP mode, verify that setting matches your home's water supply pressure. If mechanical checks pass, test that the spray arm and rotor spin freely before considering a motor electronics diagnosis.

A reset may temporarily clear the U3 code, but the error will return if the root cause is not addressed. If the drain pump is blocked or the hose is restricted, the tub will not empty correctly and the fault will reappear in the next cycle. Always diagnose and fix the underlying issue rather than relying on a reset.