Question about Dryers
Fault code F40 is a communication error between the machine control and the motor control. Disconnect power then remove three screws from the rear of the console assembly and pull console towards the front of the dryer to hinge open and remove console. You'll see three electronic assemblies; the machine control electronics, the motor control electronics, and the user interface electronics.
Visually check the communication harness, the three-wire harness that connects between the machine control electronics and the motor control electronics. Make sure it is fully inserted into both electronic controls and the terminal connections are clean. Reseating the connections several times will help clean off dirt and corrosion build up.
Do the same with the the wire harnesses connected to the motor control electronic assembly. Make sure they are clean and fully inserted into the control. It is a good idea to do the same thing with all other wire harnesses in all of the electronic assemblies.
Please indicate the exact model number of the dryer should you need further assistance or if the procedure outlined above does not address the issue. You don't have to accept or reject and rate this post to add information or post comments and follow-up questions. Accepting a solution does not stop you from communicating with an expert. You can continue communicating with the expert as long as you need assistance regarding the issue stated herein.
Posted on Jul 18, 2010
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Posted on Jan 02, 2017
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