Model A1347 with 2.4 or 2.66 GHz Core 2 Duo Processor.

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Temperature reported as 0 degrees after hard drive swap

I swapped the lower hard drive in a mini mid 2010 server to a SSD drive. I removed the temperature sensor very carefully and do not think I damaged it. After re-assembly the temperature in lower bay is reported as 0 degrees. Temperature for upper bay (untouched HD) is reported as normal. Fan operation is normal too, ie no full speed cooling.

What could cause this?

If I failed to re-connect the sensor properly I assume fans would go on full?

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I would recommend downloading a good fan & temp sensor App like this one: Temperature Gauge Pro. It should tell you more details on what the fan & temp sensors are upto.

If the sensor is reporting zero then it's not connected correctly or it's broken. The primary drive sensor is setup to be the dominant sensor so if it is working the fans don't go into high speed when the secondary sensor is disconnected.

Also the SSD is not going to run as hot as a HD constantly does. So it won't display as big a temp swing. It should still report the ambient temp of the system.

So the question is do you really need it? As long as the primary sensor is working and is on the HD you could run your system without it. If you're like me I would double check my connections and if need be I would replace it (I have a thing running with something broken).

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Well, as long as cooling works normally, I really don't need the sensor. I'm just curious what happened. Temperature Gauge Pro reports N/A for this sensor, so I might re-open the patient and have a look at the sensor's connection.

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I figured that's what you'd do ;-} If this answer answered your question please remember to rate (score) and mark it accepted.

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Ake will be eternally grateful.
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