I have a whirlpool duet washer which provided the error code F01-E02. I removed the top panel of the washer to find the service manual which. I was able to run diagnostics and follow steps to determine if the MCU was indeed bad. There were no simple fixes to the problem, so I had to order a new MCU. AppliancePartsPros.com provided the least expensive option, with 2 day shipping, and a reasonable return policy. The part arrived in 2 days and I was able to replace the part. It was a simple fix for a novice DIY repairman.