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163M Cooler stopped during stress test

163M Cooler stopped during stress test
« on: March 25, 2020, 02:19:36 pm »
I'm doing  stress test of my equipment and after 10h, the cooler of the camera stopped working. SGP couldn't read the temperature but the electrical load remained at 12.9V/1.5A. During the test I noticed that the camera case was hot, not burning, but hot. The ambient temperature is 23?C and the coller was set at 100%.
I disconnected and reconnected the usb again and still didn't worked. Then I turned off all the equipment, waited 1 min and turned all again. Then it worked until now for 1h or so, at 100%, without issues.

Can it be a thermal protection of the TEC not being capable of drain the heatsink heat?
Is 26?C too much ambient temperature for putting the coller at 100%?
This possibility doesn't concern me too much, as I don't do solar imaging, but were I live summer nights sometimes reach 23?.
or it is some kind of communication problem or random hang?

ZY

Re: 163M Cooler stopped during stress test
« Reply #1 on: March 25, 2020, 09:14:49 pm »
Hi,

According to the respond of technical support, this shall be a random issue. If this issue recur, please contact us, we can assign someone to offer remote help.

Best Regards!
ZY

Re: 163M Cooler stopped during stress test
« Reply #2 on: March 31, 2020, 07:26:39 am »
I had the same issue with my 163M last night.  I set up to take flats qith ambient temp 78f/26c and noticed in SGP that cooler was at 100% and only getting -12 when set at -15.  The night before i collected 3 hours of data at -15 same ambient temp.  I shutdown, reconnected and still 100% and -12.  Camera is 3 months old.  Do I need to return?

ZY

Re: 163M Cooler stopped during stress test
« Reply #3 on: Today at 01:10:59 am »
Hi,

The TEC can reduce the sensor temperature to about -40C below ambient. Your ambient is 26C, the maintained temperature is -12C. The temperature difference is about -40C.

Best Regards!
ZY

I had the same issue with my 163M last night.  I set up to take flats qith ambient temp 78f/26c and noticed in SGP that cooler was at 100% and only getting -12 when set at -15.  The night before i collected 3 hours of data at -15 same ambient temp.  I shutdown, reconnected and still 100% and -12.  Camera is 3 months old.  Do I need to return?

Re: 163M Cooler stopped during stress test
« Reply #4 on: Today at 08:20:08 am »
Thank you for the explanation.

Chris