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Let me look into my truck and see what I can find on this specific model
Hello, it will not do you any good if I beat around the bush on this issue.
Chigo is a chinese made AC unit, with marginal sales in the US and poor record for parts availability and service... the problem you are having is with the electronics controls, micro flaws in the printed circuit board... getting the part and finding someone who wants to work on it is a long shot in the US.. and the total cost can easily exceed the cost of a new unit in most cases.
Be grateful that it works at all, let me know about your technical skill sets if you want to attempt a repair yourself. we can go from there if you wish.