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Motor unable to rotate - no obvious reason?
2993 11 2021-3-13
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djiuser_Fqv7oiFmoTkm
lvl.4
Flight distance : 495886 ft
United Kingdom
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Hi all - first-time poster, so please be gentle :-)

I'm just over a week in to my Mini 2 adventure. It's been great so far - no crashes or bumps, but...

While doing a little bit of gentle low-level flying around the garden, I've just suddenly got a 'Motor unable to rotate' message and the Mini immediately descended. Thankfully it was a gentle landing - it was only a metre or so above the ground, but I'm glad I wasn't any higher..!

Anyway, I've checked and all the motors look clean, and seem to spin freely. I fired it up again and all seems good, but my confidence is knocked a little.

Is there anything else I should do / check?

Thanks in advance.
2021-3-13
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RenegadeCowboyAZ
Second Officer
Flight distance : 3600774 ft
United States
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Sometimes all it takes is a bit of dirt or even a hair to get these warnings ...Hopefully that’s all it was
2021-3-13
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wateroftyne
lvl.4
Flight distance : 495886 ft
United Kingdom
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RenegadeCowboyAZ Posted at 3-13 12:22
Sometimes all it takes is a bit of dirt or even a hair to get these warnings ...Hopefully that’s all it was

Here's hoping - thank you.
2021-3-13
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Tuxtard
First Officer
Flight distance : 2622287 ft
Serbia
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What was the ambient temperature during that flight?
2021-3-13
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RenegadeCowboyAZ
Second Officer
Flight distance : 3600774 ft
United States
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wateroftyne Posted at 3-13 12:54
Here's hoping - thank you.

Very welcome friend
2021-3-13
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wateroftyne
lvl.4
Flight distance : 495886 ft
United Kingdom
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Tuxtard Posted at 3-13 15:17
What was the ambient temperature during that flight?

Cold, but not excessively so. I'd say around 5°C / 40°F?
2021-3-14
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DJI Gamora
Administrator

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Hi, djiuser_Fqv7oiFmoTkm. Thanks for reaching out! We suggest inspecting the motors if there's anything like dirt or grass since you're flying in your garden that could be possibly blocking it or disrupt the movement of the motors. If you ever encountered a similar warning, it is suggested to immediately land your aircraft and inspect your aircraft before flying again.
2021-3-14
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Tuxtard
First Officer
Flight distance : 2622287 ft
Serbia
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wateroftyne Posted at 3-14 01:37
Cold, but not excessively so. I'd say around 5°C / 40°F?

I've seen a few cases where this error appears, drone looses altitude or just flips and crashes if you are flying in low temp. I don't know if the reason is ice forming inside the motors, as some suggest, or some other issue.
2021-3-15
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wateroftyne
lvl.4
Flight distance : 495886 ft
United Kingdom
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Thanks again, all. Quick update - I've flown it quite a lot since, and had no issues. Guessing / hoping it was just a blip.
2021-3-18
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djiuser_nO2RdSW5BSUg
First Officer
Flight distance : 17513812 ft
Poland
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Maybe engine covers aren't such a bad idea?
2021-3-18
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djiuser_gYFOdshV1scY
New
Australia
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Same issue. Fresh out of box and one of the motors seems jammed as it doesn't spin freely like the others. Frustrating but I guess I take back to where I purchase
2021-4-4
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Geebax
Captain
Australia
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djiuser_nO2RdSW5BSUg Posted at 3-18 00:53
Maybe engine covers aren't such a bad idea?

Not a good idea at all, the motors need to get a good supply of cool air, covers just block air flow. Another useless solution in search of a problem.
2021-4-4
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