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Forum Index => Washer Repair => Topic started by: donsabol on December 05, 2012, 03:29:56 PM

Title: fault code f-70
Post by: donsabol on December 05, 2012, 03:29:56 PM
mhwe300vw00  torn boot and fault code f-70  any help thank you
Title: Re: fault code f-70
Post by: Earl Dryer on December 05, 2012, 06:47:17 PM
I don't find that code BUT when you remove the top of the machine to access the boot to tub clamp you will see the tech sheet which will give those codes. My guess is that is the fault code saying you have a water leak,sensed by a moisture sensor on the bottom of the machine.
Title: Re: fault code f-70
Post by: tgoods on December 05, 2012, 08:54:08 PM
Unplug the 3-wire plug at the top of the motor control unit.  If the code disappears, replace the MCU, W10384846. Of course, replace your door boot first so you don't kill your new MCU.
Title: Re: fault code f-70
Post by: AJ on December 06, 2012, 07:14:19 AM
I agree with tgoods,

F70 = CENTRAL CONTROL UNIT HEARTBEAT FAILURE

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. If the drum is not rotating, unplug the MCU from the CCU
(the MI3 or M13 connector). If the code disappears, replace the MCU. If the code does not disappear, replace the CCU.
4. Replace User Interface if drum is rotating.

I have attached a copy of the tech sheet.