How to lock and unlock the dixell controller temperature

My KZbin Channel is About HVAC system
HVAC means heating,Ventilation and Air Conditioning System
It's All About Cooling,Heating and Ventilation System
My Aim of making this channel is to help people and those technicians who don't know about the air conditioning system, I want to help all of my viewers who want help in air conditioning system
I also uploaded some vlogs on my Channel and Cricket related videos which I like but my main work is Air Conditioning
When you come to my Channel watch my videos and subscribe My Channel to help me also because I also need your help and for that I shall be very thankful to all of you
My Channel Link
/ @hvactech92
I also Have Facebook page you can also follow me there
fb.watch/iXgKY...
Thanks for all of yours support
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