miketsp
Contributor
According to its manual my freezer is "computer controlled".
In fact all it has is a single chip microcontroller with a couple of inputs (door switch / some temperature measuring thermistors / second contact on the fast freeze switch).
The outputs are some LEDs and an alarm buzzer.
This seems a total overkill to implement a simple bit of logic but apparently this was the cheapest way to tell me the door is open or the seal is worn or the compressor needs more gas(coolant).
In fact all it has is a single chip microcontroller with a couple of inputs (door switch / some temperature measuring thermistors / second contact on the fast freeze switch).
The outputs are some LEDs and an alarm buzzer.
This seems a total overkill to implement a simple bit of logic but apparently this was the cheapest way to tell me the door is open or the seal is worn or the compressor needs more gas(coolant).