Jim for Model Number wfw9200sq02 I have a whirlpool duet washer that only beeps when you push the power button. No display alternates between f70,f71 code. When I disconnect m13 at the ccu the unit will power up, door will lock , full display. I checked the harness between the mcu and ccu checks ok. Is there any isolated checks for the mcu, ohm values etc. to pin point this problem?
Answer Hello Jim. Test 3.1 and 3.2 on the MCU, and see if there is power there. If not, and the motor does not run, you will need to replace the MCU. if the motor turns and there is power there, you will need to replace the CCU. You can test this with a multi-meter TJMA-DMT3. Here is a link on how to use a multi-meter. Hope this helps. http://forum.appliancepartspros.com/oven-repair-including-ranges-cooktops/4810-how-check-continuity-ohmmeter.html Read More... Answered by AppliancePartsPros.com | Tuesday, October 11, 2011