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Washer gives f35 and sud error. Trap is clean, technician came and replaced the switch. Washer worked for about a month, getting f35 and SUD error again. Basket is clean. Please help.

Model Number
MHWE500VP00
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Just verified with the manufacture that the CCU is no longer available. The only option would be to have the board rebuilt.There are some for sale on E bay, but I would not recommend it. Here is a link to a company that may be able to rebuild the CCU for you. http://www.corecentricsolutions.com/ .You could also give the fix you found on you tube a try if you feel comfortable doing it. Sounds like what you found is basically rebuilding the faulty part on the board. You could also contact the manufacture and see if they can help you somehow, because they are no longer producing the CCU.

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Yes, I would replace the CCU as long as all other checks have been done. We know its the the switch since it has been replaced. I would take off the pressure hose, put your finger over one end and blow in the other end to see if it has a hole in it. Some times they are very small and hard to find. If everything else is good, then replace the CCU. The part shows that it is no longer available. As soon as we find out a good part number for the CCU I will attach a link for you.

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Hi. I will help you with your washer.
The F35 error code is for an
ANALOG PRESSURE SENSOR FAILURE.

If this failure is displayed, the Central Control Unit has detected
a malfunction of the analog pressure sensor.
Check if pressure hose is fixed correctly and without holes or damage.
Check if the airtrap is not blocked.
Check if the hose is not blocked.

The SUDS error code is described as
SUDS LOCK (OVERDOSE OF DETERGENT DETECTED DURING THE
WASH CYCLE)

If suds are detected continuously by the pressure switch during a drain and spin the washer will fill with water, and for 5 minutes
the washer will pause, then drain and try to spin again.
Possible Causes/Procedure
If too much detergent was used:
Run through a RINSE/SPIN cycle.
Run a NORMAL cycle without adding any detergent.
This should clear the washer of the excess detergent.
Check the drain hose and make sure it is not plugged or kinked.
Unplug washer or disconnect power.
Check wire harness connections to the drain pump, pressure switch,
and Central Control Unit (CCU).
Check/clean drain pump filter of foreign objects.
Plug in washer or reconnect power.
Check drain pump.
Check the pressure switch.
Verify CCU operation by running a Diagnostic Test or any cycle.

So make sure you are using HE soap and not causing a SUDS condition. IF the issue is not with SUDS then I would first check your pressure hose. Remove the pressure hose from the pressure switch and blow through it to make sure it is not clogged. Inspect the hose very carefully for any holes. I often find that the hose will come out of its clip at the back of the washer and then it will rest against the stator as is spins causing a hole. If you find no issues I would replace your pressure switch. IF that does not take care of it then your CCU is the issue. Let me know if you need any further help. I have attached a link to a video to show you how gain access and replace the pressure switch. This is not your exact model or the exact pressure switch on your washer. We are currently working on getting our own repair video for this unit.

    • Guest
    • 10 years ago
    I have always used HE detergent. It gives me the SUD error code before water even starts going into the tub. Then it changes to F35. The pressure sensor switch is brand new and installed by a technician, (cost me 286.00). I saw a video on youtube that addressed this same issue. He replaced two capacitors on the CCU. Problem solved! I have gone through your troubleshooting, and even rechecked. Washer still giving SUD (nothing in tub, not even water), and then F35! Would changing the capacitor fix this? I hate this machine!
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