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F99 Code on power up Options  Email this topic  Watch this topic  Print this topic » Normal Threaded
Model: MHWE450WW00	Brand: Maytag	Age: 5 - 10 years
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tombishop22		#1 Posted : Thursday, August 11, 2016 7:04:17 AM(UTC)
Rank: Member Groups: Registered Joined: 8/11/2016(UTC) Posts: 7		:confused: Washer would not high speed spin after replacing MCU. Replaced CCU and now will not start. F99 code only.
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brobriffin		#2 Posted : Thursday, August 11, 2016 4:41:52 PM(UTC)
Rank: Member Groups: Registered Joined: 6/13/2014(UTC) Posts: 781 Was thanked: 1 time(s) in 1 post(s)		F99 NOT SUPPORTED User selected on the UI the unsupported Cycle on the CCU. Mismatch of User Interface and CCU or corrupted EEPROM. Possible Causes/Procedure 1. Perform Service Cycle to pair the UI and CCU SW. 2. Replace User Interface. If failure still present: 3. Also replace the CCU.
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tombishop22		#3 Posted : Monday, August 15, 2016 9:48:02 AM(UTC)
Rank: Member Groups: Registered Joined: 8/11/2016(UTC) Posts: 7		[MODEL][/MODEL] What is "Service Cycle"? I tried the diagnostic process and only got flashing lights along with "F99" flashing on the display. Is there a way to tell whether the problem is in the CCU or in the UI?
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brobriffin		#4 Posted : Wednesday, August 17, 2016 6:42:01 AM(UTC)
Rank: Member Groups: Registered Joined: 6/13/2014(UTC) Posts: 781 Was thanked: 1 time(s) in 1 post(s)		https://www.manualowl.com/m/Mayt...W/Manual/258287?page=124 This manual might help.
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tombishop22		#5 Posted : Thursday, August 18, 2016 7:46:11 AM(UTC)
Rank: Member Groups: Registered Joined: 8/11/2016(UTC) Posts: 7		I wish the manual to this washer was written as well as the one you reference. The controls are very different on that machine though.
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brobriffin		#6 Posted : Thursday, August 18, 2016 5:52:49 PM(UTC)
Rank: Member Groups: Registered Joined: 6/13/2014(UTC) Posts: 781 Was thanked: 1 time(s) in 1 post(s)		I will keep searching for the service manual for this machine. Hopefully someone else on this forum might be able to pitch in!
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tombishop22		#7 Posted : Friday, August 19, 2016 1:54:39 PM(UTC)
Rank: Member Groups: Registered Joined: 8/11/2016(UTC) Posts: 7		I have the service manual which came with the machine. The problem is that it does not have enough info to get me there. I am changing the CCU back to the old one for now to confirm that the machine returns to its previous state.
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tombishop22		#8 Posted : Monday, August 22, 2016 1:44:47 PM(UTC)
Rank: Member Groups: Registered Joined: 8/11/2016(UTC) Posts: 7		After reinstalling the old CCU board I now have an F71 fault. This seems to point to the UI causing the F99 with the new CCU. Am I thinking correctly?
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brobriffin		#9 Posted : Monday, August 22, 2016 2:08:46 PM(UTC)
Rank: Member Groups: Registered Joined: 6/13/2014(UTC) Posts: 781 Was thanked: 1 time(s) in 1 post(s)		Ah! Now a tangible code which indicates the motor control board is the culprit. So likely this is your problem. Try replacing this Whirlpool WP8183196 Electronic Control Board - AppliancePartsPros.com It should fix your issues, if not don't forget our Buy n Try policy, you can read about it if you click the 365-days return link.....
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tombishop22		#10 Posted : Tuesday, August 23, 2016 7:41:48 AM(UTC)
Rank: Member Groups: Registered Joined: 8/11/2016(UTC) Posts: 7		Thanks for the reply. I have replaced the MCU twice. The second time it made no difference in my low speed spin. I still have two MCU boards, one of which I have not used. I could easily change again but I am skeptical. I guess no harm done tho.
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