Whirlpool Washer Error Code F4

F4 on a Whirlpool washer indicates a Recirculate Pressure Switch Failure. The control board detected an incorrect or missing signal from the recirculate pressure switch during the Catalyst, Wash, or Soak cycle. The fault can be caused by a clogged hose, a disconnected air tube, wiring problems, or a defective switch. The washer will stop the cycle until the underlying issue is resolved.

It is not recommended to continue running the washer while F4 is active. The error indicates the recirculate system is not functioning as intended, and continuing to run cycles could stress other components or result in incomplete washing. Address the fault before resuming normal use.

A reset may temporarily clear the F4 code from the display, but the error will return as soon as the washer attempts the Catalyst, Wash, or Soak cycle again if the underlying problem has not been fixed. The control board re-evaluates the recirculate pressure switch each time these cycles run, so a reset alone is not a solution. The root cause must be diagnosed and corrected for the fault to stay clear.

Many of the causes of F4 are accessible to a knowledgeable DIYer. Start by inspecting the black recirculate hose for clogs and checking that the clear air tube is firmly connected and not obstructed. Examine the wiring harness at the recirculate pressure switch for loose connectors or visible damage. If those checks pass, testing the switch with a multimeter and replacing it if it fails the contact test is a straightforward repair.

If the issue is simply a clogged hose or a disconnected air tube, the repair cost is minimal, typically just your time. If the recirculate pressure switch needs replacement, the part itself generally falls in the range of $20 to $60 depending on the specific model. Adding professional labor, a service call and repair can range from $100 to $250 or more depending on your location and service provider.