Bosch KGN34VB35G Fridge Freezer Knocking Noise Coming From the Appliance
Customer Question
David Frizelle asks:
Hello, and thanks for taking the time to read this. Recently Bosch KGN34VB35G Fridge Freezer started making a knocking noise - it's hard to describe it as anything else other than that. It happens every so often, about 5 or 6 "knocks" in rapid succession from the fridge, and quite loud too. It's working fine, the temperature is correct in both fridge and freezer. Having watched some of your videos about how these things work I came to the conclusion that the issue might be in the damper unit - perhaps as the motor was trying to open or close the damper there was some obstruction and the motor was slipping. I took out the damper and it seemed to be OK, and while it was out it was opening and closing quietly. After replacing the damper the knocking noise was greatly reduced in volume and frequency, and the number of knocks that happened at any time was greatly reduced but it's worth noting that we had nothing in the fridge as we were testing it. Now that we've started to use the fridge normally again the frequency of the knocking has increased, and seems to happen not long after the door has been opened, and the number of knocks that happen each time have increased too. Presumably with the fridge in normal use and the door being opened and closed the damper unit is being adjusted more often. I would love to get your expert opinion on what might be making the noise. I have a short video of it where I captured the knocking if that helps. Thanks so much. Best regards, Dave.
Model: KGN34VB35G
Paul Says:
I will try and help with this problem about Bosch KGN34VB35G Fridge Freezer
Hi Dave,
Thanks for your question about your fridge freezer. I'm trying to understand what you mean by "damper." The fridge freezer has a compressor, which you can't access to see the springs holding the motor in place. When the compressor starts and stops, it can make a knocking noise. This usually means one of the springs inside is broken or has come off. Unfortunately, there's nothing you can do about this because it's a sealed unit.
The motor is held in place normally with springs which are inside
I'd be very interested to see a video if you could upload it to YouTube and send me the link. Another issue with fridge freezers is ice build-up inside the freezer compartment. If the fan and defrost system aren't working correctly, the fan blade can hit the ice and create noises. However, from your description, it sounds like the noise is coming from the compressor, suggesting an issue with the springs inside.
I'll try to find a photo to explain what I mean. If you need further help, feel free to use our contact page or give us a call.
Best regards, paul
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