I am getting a code f21 and also f33. The washer makes a humming sound. Any ideas as to what to look for?
ANSWER Hello Luis,
The F-21 fault code is a CCU / TOUCHPAD / LED ASSEMBLY ERROR
This error occurs if the touchpad/LED assembly is not able to transmit/receive data to/from
the central control unit (CCU).
Possible Causes / Procedure
1. Check the touchpad/LED assembly by selecting different cycles and changing the
modifiers and options available to confirm the touchpad/LED is responding.
2. Unplug washer or disconnect power.
3. Check wire harness connections to the touchpad/LED assembly and Central Control
Since the F-33 is not a valid fault code, the failure cause leans toward the CCU W10205977. (This is for model number MHWZ600TW00. There could be a different part number for the MHWZ600TW01 and MHWZ600TW02).
Answered by AppliancePartsPros.com | Tuesday, March 26, 2013