I stopped cooling the air conditioner at +40, on vacation. I stopped by this service for lack of others. The diagnosis of the air conditioning system was carried out "through one hose". They said there were no problems with the air conditioner. They sent me to look for the cause in the electrical part. I returned home after my vacation - it turned out that 400 grams of freon out of 650 were missing) Refueled - the air conditioner is working. It is not clear what he gave 1000 for.