KevinW
Member
I have this cheap temperature control that was working properly but now I can only set the high and low within 5 degrees of each other.
When the temperature is set to 90c it will come on at 28 and off at 30.
The temperature probe is ok, voltage regulator tests ok, resistors are fine, diodes are ok and I haven't checked the caps.
The only components left are a transistor, microcontroller and display..
My best guess is a faulty controller, so I'm looking for other opinions that might cause this failure.
Thanks.
Kevin.
When the temperature is set to 90c it will come on at 28 and off at 30.
The temperature probe is ok, voltage regulator tests ok, resistors are fine, diodes are ok and I haven't checked the caps.
The only components left are a transistor, microcontroller and display..
My best guess is a faulty controller, so I'm looking for other opinions that might cause this failure.
Thanks.
Kevin.
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