Hotpoint TCD8746H1EU Heat Pump Tumble Dryer High-Pitched Noise Starts Only After Prolonged Operation
Hotpoint TCD8746H1EU Tumble Dryer. Continuous high-pitched noise starts only after prolonged operation. It remains after a 1–2 minute stop but disappears after approximately 40 minutes cooling. Belt, tension pulley and rear drum bearing have already been replaced. No warning lights and water collection works normally.
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Thank you for providing those initial details, Carlos. A high-pitched noise that only emerges after prolonged operation can indeed point to several potential sources within your Hotpoint TCD8746H1EU heat pump tumble dryer.
The challenge with diagnosing this type of fault remotely is that the sound could originate from a number of hidden components—the rear bearing, cooling fans, the compressor itself, or even thermal expansion within the drum assembly. Without hearing the noise directly and pinpointing its location, any conclusion would be speculative at best.
To help us narrow this down, we'd like to request a video recording. If you're able to safely do so, please film your dryer with the lid removed and, where practical, the side panel off as well. This will give us the clearest possible view and sound capture, making it much easier to identify exactly where the noise is coming from.
Once you've recorded the video, upload it to YouTube and send us the link. The better the audio and visual clarity, the better our chances of pinpointing the fault.
We've also attached exploded diagrams for your heat-pump tumble dryer model—these should help you identify the key components as you film, and they'll be useful for reference when we review your video.
Best regards,
Paul
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