What can make my Samsung front load washing machine not spin or agitate

Appliance Repair Troubleshooting QuestionsCategory: Washing MachinesWhat can make my Samsung front load washing machine not spin or agitate
Anonymous asked 7 years ago
We replaced the rotor assembly with attached tachometer.  We used a multimeter on the door latch.  Is there a master reset we should perform after the new install of rotor?  What else would give a 3E error code?

Thanks,
Kelly