I had this same problem, an intermittent F06 fault. After some searching, I did manage to fix it. If this error code happens to you and you know a bit about electronics, try taking apart the timer and looking for dry joints between the main board and the perpendicularly-mounted microprocessor board. Over time vibration can cause the soldered joints between the two boards to crack and fail intermittently. 10 minutes to disassemble plus 2 minutes with a soldering iron could save you a $400 repair bill.
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Drive motor tachometer error
This error occurs when the main control unit fails to detect the motor speed from the tachometeric generator fitted to the motor either through an incorrect resistance or the tacho is not correctly fitted into place. The machine will try to detect the reading several times before aborting the program ans shutting down with this error being displayed.
When checking ensure that the drive belt and belt tension are okay as this can cause this error.
Check tacho resistance
check tacho placement
Check wiring for shorts
Check wiring harness connections between motor and main controller
Hi There I have found what you looking for and i hope this help's yo. let me know.
Motor Tachometer Error
control is unable to properly detect motor speed and the
machine will shut down. If a failure occurs during high-speed
spin, the door will be unlocked after 3 minutes.
wire harness connections between the Drive Motor/Tachometer
and the Motor Control Unit (MCU), and between the MCU
and the Central Control Unit (CCU)
the Drive Motor
the Wire Harness
Thank you for writing to fix ya. Best regards Richard
F15 - Motor Control Unit (MCU) Error - Disconnect power and unplug unit to check wire harness connections to the motor, MCU, and Central Control Unit (CCU). Check the drive belt and reconnect power and plug unit in. Check the MCU by looking for operations of the drive motor and check the drive motor for powered rotations. Replace failed component.
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