View single post by jlagrua
 Posted: Wed Jun 21st, 2006 08:12 pm
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jlagrua

 

Joined: Wed Jun 21st, 2006
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I have the Service Manual. Keep it by my bedside. Went through the automatic and manual diagnostic tests.

Model GVW9959KQ1

Automatic Diagnostics:

Wash Tub Full:
--------------
Fill Good
Nutate Good
Rinse Good
Spin Good
Drain FAIL


Manual diagnostic results:

All LEDs test good.

Wash Tub Empty:
---------------
Fill Good
Nutate Good - All Speeds
Rinse Good
Spin Good - All Speeds
Drain Good after some water added


Wash Tub Full:
--------------
Fill Good
Nutate Good - All Speeds
Rinse Good
Spin Good - All Speeds
Drain FAILS to drain (in manual diagnostic mode, begins draining after 30-60 sec. delay or does not drain at all - intermittent failure)

Pump/Pump Motor Assembly was replaced 7 days ago.

Diagnostic Logic Applied (correct me if I'm wrong)
--------------------------------------------------
When it failed to drain I ran the automatic and manual diagnostics and determined the drain funtionality is the only failure. But since the Rince/Recycle and Drain functions are carried out by the same pump/motor I removed it from the equation - especially in light of its' recent replacement.

I attached the drain hose to my ShopVac(tm) and evacuated the wash tub. Worked damn good as the diameter of the nozzle was just slightly larger than the drain hose. Made for a nice, tight seal and not a drop of water hit the floor. Once emptied, I re-ran the manual diagnostics and then the drain functionality mysteriously resumed without issue. I even tried filling and draing several times and included other functionality like spin, nutate, rinse, etc. to see if I could get it to fail. Nope. Worked flawlessly.

So, next I ran a Quick Wash cycle with no clothes or soap. Watched the entire cycle - no untoward behavior. Loaded a load of sheets with soap and ran a Quick Wash cycle - wash cycle terminated prematurely with a CE error. Cancelled cycle, returned to manual diagnostics - drain failed. Reset to Quick Wash - it got to rinse/spin and terminated with a CA. I think this was an overheat condition, but can't be sure. Let sit for a few minutes, and atempted a Rinse/Spin cycle. Terminated with LD error code. Manually drained with ShopVac again. Entered Manual Diagnostic mode and went through the functionality step-by-step all modes function, including drain. All functions good. Finally got tired. Went to bed.

Analysis:
Suspect Machine Control Board (P/N#1156559) but a faulty pressure switch is not out of the question, either.

Any assistance/clarification/corroboration appreciated. The wife is chomping at the bit for me to order parts/call a repairman. I can fix it, I just want to be sure I'm fixing the right thing.

Regards,
Jeff La Grua