Question about Bosch Washing Machines
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Posted on Jan 02, 2017
SOURCE: Error code E21
E21 Water not pumping out fast enough. .
Check for Restriction in drain pump or hose...
No restriction. Go to step (2).
2. Start the washer and check for 120 VAC at the
drain pump. if no voltage Replace the control board.
120 VAC. Remove the pump and check for
blockage. If blocked, remove the restriction,
if not, replace the pump.
Posted on Aug 24, 2008
E21 indicates that water is not draining from the machine fast enough. This can be caused by a kink in the drain hose, a problem with the pump or a problem with the pressure sensor.
On my washer, there's a copy of the service manual inside the machine - remove two screws in the back and take off the top. The manual includes the error codes and the steps to take.
Posted on Nov 18, 2009
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