Grinding Noise - Panasonic NA-140VG3
Hello and thank you for this forum. My PANASONIC NA-140VG3 developed a grinding noise about 6 months ago and is getting worse all the time.
It had a new drum and logic board at 5 yrs old under warranty, and now 3 years further at 8 yrs old this issue. It is a very loud grinding noise that occurs when the water is injected into the drum with the side jet on the top right corner of the drum. It does NOT make a noise evacuating the waste water or while spinning. The noise appears to be coming from the pump in bottom left corner, but like I say no noise doing waste water. Drum drive bearings and motor are fine.
I've cleaned the pump from the front tray, cleaned inlet filters and checked the Solenoids. I haven't removed the pump yet to see if any obvious error (not sure how to do that yet) because I'm confused why the pump would be noisy doing one function and not another. Is the pump dual function - ie recirculation and evacuation of the water?
I would very much appreciate some help at this point as I've come to an end of my investigation ability with this issue.
Thank you. AB
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.
Panasonic NA-140VG3 grinding noise traced to recirculation pump
- The problem
- Panasonic NA-140VG3 washing machine developed a loud grinding noise that had worsened over about six months. The noise occurred when water was injected into the drum from the top-right side jet during wash. It did not occur during draining or spinning. The owner had already cleaned the pump filter, inlet filters and checked the solenoids, and reported the drum bearings and motor seemed fine.
- Likely cause
- Most strongly supported diagnosis is a faulty recirculation pump rather than the drain pump, motor or drum bearings. This is supported by the noise only appearing during the water recirculation/spray function and not during waste-water evacuation or spin, plus a later reply from another owner of the same model confirming their identical noise was caused by the recirculation pump.
- What fixed it
- Recommended action was to determine whether the machine has a separate recirculating pump, as this was the likely source. In the discussion, another same-model owner later confirmed that replacing the recirculation pump stopped the noise. The original poster did not confirm their own repair.
- Checks to try
- Cleaned pump filter/front tray
- Cleaned inlet filters
- Checked solenoids
- Observed noise only during water injection via side jet
- Observed no noise during drain cycle
- Observed no noise during spin
- Parts or tools mentioned
- Recirculation pump
Safety: Further diagnosis should be carried out by a suitably qualified appliance engineer.
4 Answers
Does it have a separate recirculating pump? If it doesn’t make the noise on the drain and spin cycle it could be that.
Need Professional Help or Spare Parts?
Does the noise stop when the drum stops rotating during wash? If it does it’s likely to be coming from the motor or drum but if it doesn’t it’s likely to be recirculation pump.
Need Professional Help or Spare Parts?
Hi. mine has just started making exactly the same noise. Same model. Was it the recirculation pump? Thanks.
Mine was the recirculation pump. I changed it on the weekend and the noise has stopped.
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