B October 16, 2021 for Model Number WFW9400SW01 Can the tachometer be replaced on the motor and do you sell just the tachometer?
B October 12, 2021 for Model Number WFW9400SW01 My washer performs normally until the spin cycle, when it stops and displays the F25 code. I have tried all of the other options to complete washing a load, even just Drain and Spin. That worked a couple of times, but it seems like the weight of the load is also an issue. When I lighten the load (and I mean like one twin sized sheet) it will spin normally. What could be the source of my problem; the Motor Control Board or Electronic Control Board?
1 Answer Hello B, the main control board is not getting the correct tach (rpm) reading from the motor control board which is getting it from the tachometer in the motor assembly. Since this seems to occur when the wash load is heavier which translates into more tub movement, usually this involved the wire harness to the motor, check the 2 tan wires (tach circuit) from the motor control board to the motor. Sometimes the wire terminals can come loose, the wires have been rubbed thru along its length or are actually coming apart internally. Read More...
Roger October 05, 2021 for Model Number WFW9400SW02 Hi, I'm getting F11 error code on my washer machine. I believe it could be the ECB or MCU or wiring connection failure. Could you confirm the part numbers and how should I determine which one is actually bad? I found the following parts but now sure if they're 100% correct. Part Number WP8183259 ECB Part Number WP8183196 MCU Should I run a Diagnostic test first? Thanks
1 Answer Roger, if the wires going from the motor WP8182793 to the motor control are secure and intact (identified by testing from the wires at the motor control for resistance and each wire combination should measure 6 Ohms), the motor will need to be tested using the diagnostic mode to perform a forced operation. If the motor does not operate, the MCU WP8183196 would need to be replaced. Read More...
Joe September 29, 2019 for Model Number wfw9400SU01 The MCU is located on the bottom of the washer, but I am not seeing it on the diagram. Could you give me the part number so I order the correct part?
Darren C October 03, 2016 for Model Number WFW9400SU00 My Whirlpool starts filling up and then stops and flashes F11. It will not tumble like it use to while filling. It just shuts down. I checked the belt and it was not broke. Was told it might be the motor control board. What is your thoughts?
1 Answer Hello Darren. The Motor Control Unit has internal failure; repeating under or over voltage, or over current conditions. If failure occurs during high-speed spin the door unlocks after 3 minutes. Possible Causes/Procedure 1. Unplug washer or disconnect power. 2. Check wire harness connections between the drive motor and the Motor Control Unit (MCU), and between the MCU and the Central Control Unit (CCU). Check the motor and do a continuity test. 3. Plug in washer or reconnect power. 4. Check the MCU by looking for operations of the drive motor. 5. Check the drive motor for powered rotations. 6. Replace MCU board. Read More...
Bruce April 20, 2016 for Model Number WFW9400SW02 I was getting an f21 error and replaced the drain pump in December, then it returned this month, replaced the pump again. Now i am getting an f20 error running dianostics and the drain pump works but keep running. After resetting the washer it through a f28 error code. Not sure if I should replace the pressure switch or the main control unit or both.
1 Answer Bruce, With getting the F20 code which is for no water being detected and the F28 which is a communication issue between the CCU and MCU then this will most likely be a CCU error which is part number WP8183259. Read More...
Jay December 27, 2015 for Model Number WFW9400SW00 I am getting f70 and f71 code can you help me where to look. Thank You Jay
1 Answer Hello Jay. If a Central Control Unit Heartbeat Failure is displayed, no communication is detected from the Central Control Unit to the User Interface. Possible Causes/Procedure 1. Check for continuity of the User Interface harness. 2. Check wire harness connections to the User Interface and the Central Control Unit. 3. Replace User Interface if drum is rotating. 4. Replace Central Control Unit if drum is not moving. Read More...
Steven July 12, 2015 for Model Number WFW9400SU00 Getting an F28 code. Is there a way to test control board to motor control board communication?
1 Answer Hello Steven. Possible Causes/Procedure 1. Unplug washer or disconnect power. 2. Check wire harness connections to the MCU, the motor, and Central Control Unit (CCU). – Check connections of the CCU board within the housing. – Make sure all grounding switches are engaged. 3. Check the drive system for any worn or failed components. 4. Plug in washer or reconnect power. 5. Verify CCU operation by running a Diagnostic Test or any cycle. 6. Check the MCU by looking for operations of the drive motor. 7. Check the drive motor for powered rotations. 8. Check that the serial harness at the MCU is not mounted upside down. The wires should be to the left when facing the MCU connectors. Read More...
Kevin October 23, 2013 for Model Number WFW9400SW00 My washer has no power. I had a tech check it today, and he said it was the electric control... power comes in but not out. He quoted me $630 parts & labor. I think I can change the component myself and save some money, but there are two listed (12 & 14) on my washer's diagram. My question is, which electric control unit does that sound like? 12 or 14? Surely I don't need to change both... Thanks!
1 Answer Hello Kevin. You will test for power coming to the CCU and then out of the CCU. If it does not come out, replace the CCU. If it does come out, replace the interface. Read More...
Michael June 06, 2013 for Model Number WFW9400SW02 I have washer that originally displayed F71, after disconnecting and reconnecting F71 changed to F72. no other displays. I had replaced user interface and now there is no display at all. prior to that for a while washer was vibrating intensively. I guess from what I read it could be bad connection between user interface and microcomputer. my drum rotates without problem. the technician tells me that it is hard to check harness and needs to be replaced. is there is a way to check signal out of the microcomputer? once I replaced user interface there is no signal on the display but start button beeps when pushed Thanks in advance for your response, Michael WFW9400SW02
1 Answer Michael, You will want to check the continuity of the user interface harness to make sure that the harness is not bad. Check the connections of the harness at the interface and the central control unit. If the drum is not moving replace the Central control unit WP8183259. Read More...