Lg Intermittent Draining
Hi,
My LG WM12220FD washing machine drains intermittently. I have stripped out the pumps and cleaned them (one was particularly gunged up) checked for open circuits,which were fine, and cleaned the hoses.
The machine is still only draining intermittently although if I quickly switch the plug on and off the machine will then carry on as if no fault had occurred. The only thing I can think of is that the control board may have become faulty?
Any advice please?
Thanks
Mervyn
Solution Summary
AI-generated from this discussion
This thread was marked as solved. Here's a summary of the problem and the fix, generated from the discussion below.
LG WM12220FD intermittent draining traced to drain pump assembly
- The problem
- LG WM12220FD washing machine would only drain intermittently. The owner had already removed and cleaned the pumps and hoses, including one pump that was heavily clogged, and reported the problem remained. When the fault occurred, the pumps did not appear to run; switching the plug off and back on would often make it start draining again and continue the programme.
- Likely cause
- Intermittent failure of the drain pump assembly was the strongest supported diagnosis. The discussion also noted possible obstruction-related overheating or sticking in the sump hose or around the impeller, but the final confirmed repair points to the pump and housing.
- What fixed it
- Re-check for obstructions in the sump hose, drain hose and pump/impeller area, and observe whether the drain pump stops running during the fault. The owner ultimately replaced the pump and housing.
- Checks to try
- Pumps removed and cleaned
- Checked pumps for open circuits
- Cleaned hoses
- Observed that when the fault occurred the pumps did not appear to be running
- Advised to check sump hose for obstructions
- Advised to check for a sticking plastic ball if fitted
- Advised to inspect pump impeller for small items wrapped around it
- Advised to inspect drain hose internally
- Parts or tools mentioned
- Pump and housing
Safety: Further diagnosis should be carried out by a suitably qualified appliance engineer.
7 Answers
Intermittent faults like this are usually difficult to diagnose. Check the pump isn't cutting out. Also check the sump hose for obstructions and make sure if a plastic ball is fitted that it isn't covered in gunge which can make it intermittently stick. Other possibilities are a small coin or buttons flipping around and acting like a butterfly valve. Check everything in my article not pumping water out including the links within it.
Need Professional Help or Spare Parts?
Hi,
Thanks, I did read it but will re-read in case I missed something. I think I will have to take the machine apart again and re-check everything. Being pensioners I would hate to buy the two pumps required and then find it still will not work ;-)
Yes, buying parts speculatively often costs more than paying an engineer. It's crazy how many people buy one part after another and it drags out over weeks and often give up having wasted a lot of money and time. If the fault is very intermittent it's going to be hard, but if it is playing up fairly frequently you need to observe it carefully when it stops pumping out. Listen to the machine, has the pump stopped running? Is it sounding different? It's definitely worth taking off the sump hose (Black hose leading to the pump) and maybe even the drain hose to see if you can find anything inside them.
Need Professional Help or Spare Parts?
I may have made a huge mistake here.............My mind must be going ;-) when the fault occurs the pumps do not appear to be actually running! It is only when I switch the plug off and then on again it seems to spur it into action and then it pumps out and carries on with the set program.
There should only be one pump responsible for draining the water. If it actually stops then it could be cutting out. If so it may be very hot (be careful) which might imply it's faulty or got an obstruction inside. However, small objects like hair grips or elastic bands can slow a pump down and make it overheat. Check the pump doesn't have anything inside it especially wrapped around the impeller.
Need Professional Help or Spare Parts?
Hi, Did you find a solution to this?
Hi yes,
I just replaced the pump & housing
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