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I just purchased a kenmore elite he4t washer from craigslist. i ran the diagnostic check the first time and received a f2 error. i checked the drain hose, electrical connection, and drain pump. i ran a second diagnostic check and received a f6 error drive motor techometer error. checked wiring connection from drive motor, mcu/ccu. i also checked the resistance on the motor between pins 12 23 13 and it was 6 ohms. ran test again same error code f6. the washer won't spin. please help

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"F02" is a Long Drain error. If the drain time exceeds 8 minutes this error code will be displayed. In addition, a "SUDS" error may also be generated as a secondary error. This is an indication of a drain pump problem and/or clog in the drain line. You will need to check the following:

1. Check the drain hose to make sure it is not kinked or clogged.
2. Check the electrical connections to the pump and ensure the pump is running.
3. Remove the drain pump filter and check for foreign objects and/or debris.

To check the drain pump, click on the following link for step-by-step instructions.


http://www.fixya.com/support/r385844-checking_drain_pump_kenmore_elite_front

If the above procedures do not correct the problem, it is recommended by the manufacturer to replace the drain pump




The error is an indication a motor speed problem. You will need to check the following:

- Check the wiring harness. Verify all connections between the Drive Motor, Motor Control Unit (MCU), and Central Control Unit (CCU).

NOTE: The MCU is a circuit board located in the vicinity of the Drive Motor on the bottom rear of the washer. To access the MCU, you will need to remove the back panel of the washer.

NOTE: The CCU is the main computer for the washer and is located behind the wash tub. You will need to remove the top panel to access the CCU. This is accomplished by removing the three screws in the back of the washer that hold the top in place. Once the screws are removed, the top panel will slide back, then lift off.

- Check the Drive Motor. Perform a continuity check of the Drive Motor windings. Remove the connector plug and check across pins 1 to 2, 2 to 3, and 1 to 3. All readings should be approximately 6 ohms. HINT: You can also take this reading by removing connector 2 from the MCU and measuring across pins 1, 2 and 3. If the readings are good, this will also prove the wiring and connector good.

- Check the MCU. The connectors are numbered 1 to 3 (L to R). That is, with the MCU installed, connector 1 is on the bottom, followed by 2 in the middle, and 3 on top.

Connector 1 - is the serial communications link between the MCU and CCU and has three wires. At the opposite end, this will be the 2nd connector from the rear on the left-hand side of the CCU.
Connector 2 - is the link between the MCU and the Drive Motor. Pins 1, 2, and 3 on this connector are the Drive Motor windings. Pins 4 and 5 are for the tachometer.
Connector 3 - is the primary power connector. Pins 1 to 2 should read 120VAC with the door in the locked position. Pin 3 is ground. At the opposite end, this is the 4th connector from the right on the front of the CCU.

NOTE: All the connector pins are numbered R to L.

If your continuity readings are normal for the Drive Motor and you have verified all connectors, replace the MCU.

If any of the Drive Motor windings indicate readings higher that 6 ohms, replace the Drive Motor.


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Posted on Sep 17, 2010

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