Author Topic: WM0642HW/01 will not drain  (Read 562 times)

Offline trentech777

  • VIP Member
  • Member Since: Aug 2013
  • Posts: 6
WM0642HW/01 will not drain
« on: August 23, 2013, 06:50:00 PM »
  My WM0642HW/01 washer stopped draining last night but I cant seem to find the source.     I'm sure I heard the drain pump running while performing the diagnostic test but nothing was draining from the drum.   I removed the drain pump thinking it would be completely clogged but it is clear and so is the drain hose.   I checked the resistance of the motor - terminal to terminal - and I'm getting 14.5 ohms which sounds about right.  The impeller spins freely also and is not worn.   I am at a total loss here.   I think I have no choice but to put this all back together and try it again.   Have I missed something here? 

Offline trentech777

  • VIP Member
  • Member Since: Aug 2013
  • Posts: 6
Re: WM0642HW/01 will not drain
« Reply #1 on: August 23, 2013, 09:55:28 PM »
   I put the washer back together and it worked perfectly.  It filled and drained like a champ.   I next tried the full diagnostic and this time the drain pump did not work - every other diagnostic test is fine.   repeated many times - no joy on the drain pump.     I suspect that there may be water leaking past the impeller shaft and shorting the motor out.  I definitely don't want to clean and dry out the drain pump every time I need to wash a load!   Does anyone know if there is a history of these front-loader pumps leaking internally?  In any case, I will check the circuit before disassembly this time.

Offline wildimaginations

  • Technician
  • Member Since: Jul 2011
  • Posts: 580
  • Country: us
Re: WM0642HW/01 will not drain
« Reply #2 on: August 24, 2013, 07:40:55 AM »
Replace the drain pump.  Could be just worn out pump that will erratically freeze up on it's own. 
Appliance Service Technician
Authorized servicer on LG appliances.
About 45 mins east of San Francisco

Offline domain

  • Technician
  • Member Since: Nov 2012
  • Posts: 667
  • Country: us
Re: WM0642HW/01 will not drain
« Reply #3 on: August 24, 2013, 08:19:28 AM »
It is a insulated pump meaning water can not "SHORT" any electricity, :tickedoff: lol. Replace the pump motor if voltage is verified at the time of no drain function. You can also tap it with a rubber mallet and that may get it to spin, to verify it is indeed, that pump. O0 O0

Offline trentech777

  • VIP Member
  • Member Since: Aug 2013
  • Posts: 6
Re: WM0642HW/01 will not drain
« Reply #4 on: August 25, 2013, 02:53:24 PM »
Thanks for the help!   New pump is on the way.   'post  mortum' on the old pump to follow (too curious).

Offline trentech777

  • VIP Member
  • Member Since: Aug 2013
  • Posts: 6
Re: WM0642HW/01 will not drain
« Reply #5 on: August 29, 2013, 05:50:49 PM »
    I see what you mean about a sealed pump!  Clever design.  I pulled the impeller rotor out of its housing and found the rotor magnet had cracked allowing approximately 1/4 of the entire surface of the magnet to 'sling' radially outward and run against the plastic housing internal diameter.  Since this large magnet piece was still attached to the rotor, it pulled the shaft into a heavy out of balance condition (the pump was very loud the one and only time it worked after putting it back in).  This appears to have caused the impeller shaft to wear out the guide in the housing.  The housing was completely filled with laundry debris and watery sludge.       I  know - Just change the @&$! pump already !!    The new drain pump works great.

Offline domain

  • Technician
  • Member Since: Nov 2012
  • Posts: 667
  • Country: us
Re: WM0642HW/01 will not drain
« Reply #6 on: August 31, 2013, 12:10:31 AM »
 :D :cheers:

 

Maytag Neptune MAH4000AWW Won't Drain Water / Smell

Started by mightymac

Replies: 22
Views: 21038
Last post February 15, 2013, 04:35:03 PM
by def
My Maytag washer won't drain

Started by krisncameron

Replies: 1
Views: 3139
Last post November 18, 2007, 12:45:00 PM
by apptech
whirlpool washer model LXR9245EQ1- won't drain-slow spin

Started by fixmeplz

Replies: 2
Views: 4883
Last post January 16, 2008, 10:13:02 PM
by JWWebster
Frigidaire Washer - Noisy During Drain Cycle.

Started by AJ

Replies: 0
Views: 2728
Last post December 27, 2007, 07:54:12 PM
by AJ
drain length

Started by cbeast

Replies: 7
Views: 1970
Last post February 05, 2008, 07:24:24 PM
by JWWebster
Washer spins but doesn't drain

Started by veryhipp

Replies: 5
Views: 3529
Last post February 25, 2008, 02:05:19 PM
by veryhipp