Some customers from oversea buy the cold room from us and install well, but do no know how to change the default digits of controller. If you get a new controller box, there are 3 key functions need to change default digits.
1) On temp. That means compressor start up when temperature reaches the set value. For freezer room, we usually set it -12 degree and chiller set it 6 degree;
2) Off temp. that means compressor stop working when temprature reaches the set value. Freezer room we set it -18 degree or -20 degree. The temperature different between On temp. and Off temp. make it 6 degree.
3) F2 function. This function means alarm, when walk in freezer temperature exceed the limit value, it will scream like ambulance car.
How to set these three important digits, please check the video:
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