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LG TrommWM2487HWM will not drain after changing pump and control board

I got OE code. I changed the drain assembly (including both drain & circulation pumps). I removed and cleaned the tub to pump and pump to drain hoses, there were no clogs. Still would not drain. I had pumps checked at local electric motor shop, they are good.

I changed the control board and the machine still will not drain. It passes test 11 & 12 of the QC Test Mode. It seems to fail test 2 & 3 - the machine does tumble. Everything works fine until it is time to drain. What else could it be?

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hi @cs108 ,

Since it fails QC 2 & 3 perhaps the sensor is faulty. (see heating without water section)

I think that this may be the sensor as it says heater, water level, frequency, thermistor, but I’m not sure.

Looking at the p.15 Program chart, the drain function comes just before the spin and the QC tests that fail are the spin tests.

Just what I would look at.

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