Rank: Member
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Joined: 3/11/2010(UTC)
Posts: 1
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I have a whirlpool duet that intermittently gives an f06 error code. The problem has been going on for about a year now. I have done all the trouble shooting in the manual with little success. Here is what I have found.
Washer works fine through 1 or 2 loads then pops f06 code. After resetting it may or may not finish cycle. Drum spins fine and motor spins fine with belt off. Motor reads 6.2 ohms per phase and tach reads about 120 ohms.
I thought something on the MCU was overheating so I pulled the heat sink off the board cleaned it and regreased it with heatsink grease. This may have helped some but eventually the same thing happened again.
Today I kept restarting the washer after it tripped until it would not spin at all. Then I pulled the MCU out and set it on the pedestal with a small fan out of acomputer power supply blowing on it. The washer has ran 4 loads back to back since I have done this.
This makes me think it has to be the MCU, however I decided to check a few things first. The motor is hot (cannot hold my hands on it for more than asecond or so. Then I checked the motor it now reads 7.1 ohms. I realize the resistance will increase with temperature so my question is should the motor be this hot? Also while the motor is spinning at high speed the voltage is about 125 vac and .9 amps while the whole MCU is pulling 3.5 amps.
SO motor or MCU????
Sorry this was so long, but I don't want to replace the wrong part. Thanks for any help
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Rank: Advanced Member
Groups: Senior Expert
Joined: 3/29/2009(UTC)
Posts: 11,699
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I wish we could give you a definitive answer, but the problem with these units with microprocessor controls is you can only make educated guesses. That's why the service tech shows up to your house with a truck full of parts to change out until it is fixed. It sounds very much like your motor is failing, and when it does that triggers the F06 error. Unfortunately you are just going to have to change it out to confirm this. I assume you found the tech notes, but in case you did not here they are. http://www.servicematters.com/d...0Sheet%20-%208182677.pdf
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Rank: Advanced Member
Groups: Senior Expert
Joined: 9/10/2007(UTC)
Posts: 9,586
Was thanked: 2 time(s) in 2 post(s)
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You might have bad tub bearings. All the front loaders use a low HP motor, typically 2-2.5 amps compared to 8-9 amps for a top loader which saves a lot of energy.
I would monitor the washer input current in spin. Before it ramps up to full spead, the motor will draw say 2 amps, as it ramps up to high speed, the bearing friction will increase and the motor current will go up rather fast and the motor start to overheat. If it's internal thermal overload trips out, it will not run again for several minutes, this protects the motor from burnout.
To confirm this, you can turn the basket by hand to check for bearing roughness.
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