Today I was on AC shop for checking of gas leaked yesterday & found that joint between condensor steel pipe & rubber pipe leaked so they changed rubber pipe,fixed leaked joint,filled new gas,charged Rs 2500.After all work electrician noticed fan is auto he made it direct saying there isn't a kit installed in car for autofan & runing it on auto for last few days weakened compressor,again he said car is old engine is weak,keep fan runing direct.Electrician said that in auto system fan should start instantly when AC is turned ON.Then I went to mechanic who did autochoke,autofan told him all this & he replied he is mechanic not electrician so if it is made direct then you should keep it direct as runing on auto will weaken the conpressor.He said for proper auto system there should be Tstat valve installed & a kit that costs 14-15K is also installed on evaporator box which isn't present in my car.When I asked him about auto choke system with direct fan he said it doesn't matter,he said something like with Autofan interval for auto choke water? Is 2-3 minutes which with direct fan will increase to 4-5 minutes so nothing significant.Mechanic said if you want all genuine system you should install new wiring,do engine overhaul,install all missing pipes of system & then make autofan system runing.Mechanic said the auto system he turned ON works like this that fan don't start instantly with AC but will start when engine comes up to required temperature which isn't the right way.
INFO added : I forgot to write earlier that when electrician was filling AC gas with increased race of car,fan was on auto mode & after filling all gas electrician noticed fan didn't start so he removed radiator fan wire & attached it with engine body via a nut.is it normal or not?engine shouldn't heat up enough with AC ON & increased race to start autofan?