STC1000 Not using set tempreature

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Warren Duff

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Nov 21, 2017
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Hi All
Wired up at STC1000 for cooling only. No heating circuit connected
Parameters are:
F1 = 22.0
F2 = 0.5
F3 = 3
F4 = 0

All settings are confirmed by the toggle switches (at home screen, press up or down to view F1 or F2). It appears to be saving them.

Thermometer is taped onto the side of the barrel. No insulation.

Issue: The STC1000 kicks in the cooling at a temperature not equal to F1 + F2 +F4.
i.e. It should kick in the cooling at 22.5 degrees using the above settings.
it is coming in about 13 degrees.

Is the unit faulty or am I doing something wrong?
 
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