Dacor Dishwasher Error Code F-4

F-4 is a drain pump fault code. After the dishwasher runs a drain cycle, the Water Presence Sensor (WPS) checks the sump for residual water. If the sensor still detects water conductivity, the controller flags the F-4 code to indicate that the drain pump did not successfully clear the sump. The fault can be caused by a failed pump, a blockage, or a malfunctioning sensor.

You should not continue running the dishwasher while F-4 is active. Standing water in the sump can lead to odors, mold growth, and potential overflow during the next cycle. Resolve the drain issue before running another wash cycle to avoid water damage or further mechanical problems.

Repair costs depend on the root cause. Clearing a simple blockage in the drain hose or pump is often inexpensive, primarily involving labor costs in the range of $75 to $150 if a technician is called. Replacing a drain pump motor typically adds parts costs in the range of $50 to $150 on top of labor. A WPS replacement is generally less expensive in parts but still requires a service visit, putting total repair costs roughly in the $100 to $300 range depending on your location and the specific failure.

Some causes of F-4 are DIY-friendly. Clearing a clogged pump impeller, removing a blockage from the drain hose, or cleaning out an air gap does not require special tools or parts. However, replacing a failed drain pump motor or a faulty WPS involves disassembly of the unit and working with wiring, which is best handled by a technician if you are not comfortable with appliance repair.

A reset may temporarily clear the F-4 code, but if the underlying drain problem has not been fixed, the fault will return the next time the dishwasher attempts to drain. Resetting without addressing the root cause is not a solution. The drain pump, hose, and WPS should all be inspected and confirmed to be working correctly before relying on the machine to operate normally.