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Old 01-12-2013, 04:25 PM   #11
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This is exactly why I tried warning people off of overkill heater solutions in another thread. You could open up the fridge and find a melted liner and other nasty stuff.
So you have seen something like this before then???
I only have a 75 watt infrared bulb in there.
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Old 01-12-2013, 04:29 PM   #12
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Again not being familiar with the controller, is there a possibility that the wires on the probe are reversed?

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Old 01-12-2013, 04:47 PM   #13
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It seems like an error type message but instead of a EE error it supposed to give when there's a short or something it just reads a completely off temp and trys to regulate that with heating until it gets back to what I programmed it to keep the temp at.. so judging by what i just wrote i think that is starting to sound more like the probe.
Do you have an ohm meter? Check the resistance at room temperature. I can then check mine to get a reading and see if they are in the same ballpark.
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Old 01-12-2013, 04:52 PM   #14
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So you have seen something like this before then???
I only have a 75 watt infrared bulb in there.
I did appliance repair for over 30 years. Yes, I have. 75 isn't too bad but I wouldn't go over a day without checking it to be safe. It all depends on application and temperature extremes. I have an old heating pad I use. It takes a couple days sometimes to get up to temp in the winter but it works. In my application, in my basement refrigerator fermentation chamber I'd be comfortable that 25 watts is enough. The small space heaters are overkill at 200 watts but at least come with their own thermostats as a backup.

In my cases the damage is 'usually' confined to the area of the light bulb. There was also some wall melting in some of the older freezers from the icemakers. Just point the 75 watt bulb away from surfaces.

Keep in mind the units I worked on were actively trying to cool which helped.
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Old 01-12-2013, 05:45 PM   #15
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Are you SURE that your wiring is correct?

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Old 01-12-2013, 06:07 PM   #16
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Since the controller is behaving properly given what it thinks the temperature is, this doesn't sound like a wiring mistake. It's an NTC probe, so a super low temp means you're getting a lot of extra resistance. If this is only happening sporadically, perhaps a short somewhere in the cable? Or maybe a bad connection where the probe connects to the controller? Did you wire some kind of plug into the probe cable, or does it plug directly into the back of the controller?

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Old 01-12-2013, 08:26 PM   #17
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since the controller is behaving properly given what it thinks the temperature is, this doesn't sound like a wiring mistake...
=?
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.... Or maybe a bad connection where the probe connects to the controller? Did you wire some kind of plug into the probe cable, or does it plug directly into the back of the controller?
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Old 01-12-2013, 08:35 PM   #18
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Is the probe in liquid? Maybe a moisture problem?

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Old 01-12-2013, 08:40 PM   #19
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Quote:
Originally Posted by raouliii
=?
The display says minus 14, so the heat should be on, no?
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Old 01-13-2013, 02:16 AM   #20
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Quote:
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Are you SURE that your wiring is correct?
Yeah i double checked the wiring to make sure it was good to go.
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