I’ve changed the MCU in CCU and I am still getting the f11 error I do not see or hear the motor or the tub turning
- Guest asked 8 years ago
Hi. I have the description from the tech sheet for the F11 error code.
Serial Communication Error
Communication between the Central Control Unit (CCU) and the Motor Control Unit (MCU) cannot be sent correctly.
PotentialCauses
. Check Wire Harness connections to the MCU. the motor, and Central Control Unit (CCU) . Check the Drive system lor any worn or failed components . Replace MCU . Replace CCU . Replace Motor . Replace Wire Harnes
I have also attached service manual for you as well. Almost always I have seen the MCU or CCU fix this issue. I would suspect the wire harness next. It also states it could be the motor, which I have never seen before. Also, I have attached link to other F11 questions that have been answered in the past. Please take a look at them as well.
- Brian, Ace Appliance answered 8 years ago
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so i changed the MCU and the CCU and the wire harness and im still getting the F11 i did check the motor for OHEM and i got like 6.1
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That’s strange. You have replaced everything related to this error code. Make sure nothing is shorted to ground. Check the motor to ground. Make sure you have a proper ground and voltage at the outlet. Make sure you have the back and front panels on so that the ground switches are pressed in. This can cause this error code to occur. The only other thing I can think of is that one of the boards ( the fully one) took out the new board you installed. We have seen this before. You may need to install 2 new boards together. ( the MCU and CCU ) that is my only other suggestions at point.
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how do I test for ground? and is there a way I can’t test if power is getting to the motor
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To test for ground your going to put your lead on one of the motor terminals and the other to the cabinet or a ground screw. Do this for each have of the motor terminals. You should get no resistance. It should read open line. If you get a reading or resistance then you have something shorted out.
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During operation or a test cycle you can check for voltages to the motor at the motor connections or at the MCU harness for the motor.
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