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Old 08-26-2007, 07:17 PM
xscash xscash is offline
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Default electrical help..wine fridge to bev cooler

i have a magic chef wine fridge, but only cools to 41deg. im building a tap setup in my pool house and want this unit for bottles.the unit is digital but the wiring diagam shows 2 resistor type temp probes. one for the temp and the other for the defrost. i paralleled a 11k resistor on both lines. this raised the digital temp. so i figured the unit would try to get back to 41. but it didnt. anyone have a suggestion on what to try next?
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Old 08-26-2007, 09:09 PM
psychodad psychodad is offline
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This may be a dumb question, but what do you have it set at? I know the Danby kegerators will default to I believe 42 degrees when you unplug them. Perhaps when you were adding your resistors the setpoint reverted to a default setting whilst the power was off.
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Old 08-27-2007, 08:05 AM
xscash xscash is offline
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Quote:
Originally Posted by psychodad View Post
This may be a dumb question, but what do you have it set at? I know the Danby kegerators will default to I believe 42 degrees when you unplug them. Perhaps when you were adding your resistors the setpoint reverted to a default setting whilst the power was off.
thanks for the post, it is set as low as it will go.....41deg. i thought if i fooled the temp sensor to think it was warmer than it was, it would try to cool it more.
the temp was 42 inside..i quickly added the resistor (20secs, i had previously set it up). and the temp jumped to 65. so i figured it would try to get back to 41. but it stays there.
i also thought it may be the defrost sensor countering the temp...so i added the resistor to that also.. no go
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Old 08-28-2007, 07:56 PM
lunkhead lunkhead is offline
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You need to find out the temp coefficient of your temp sensor You should take the temp sensor out and measure the resistance at room temp. Then put the sensor in an ice/water bath and compare the readings. As the temp goes down and the resistance goes up it's a negative coefficient and a parallel resistor will work, about 5 times the value of the sensor in the ice bath. But if, as the temp goes down and the sensor resistance goes down, than you'll need a series resistor. compare the sensor reading in the ice bath to putting in a refrigerator (38-40 deg). Try adding the difference in series to the sensor. I don't think I would do anything to the defrost sensor.
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