aircon - fan when should it fire up?

[omodos]

Hello to all, cut a long story short (long story included below to be honest) how long after you turn on the air con in the cabin should the large fan in front of radiator fire up? Air con guy says I may need new one due to below observations….

summer kicked in early here 33C too hot, and my aircon refrigerant was low again takes two years to need a top up or refill, still not sorted it, on my visit this time to another guy who deals with aircon and car electric repairs, the minute he finished and fired up engine and turned aircon on to about 20c he said I had an issue and pointed to the large fan in front of radiator not spinning….before he could go any further it kicked in and started.

He told me to keep an eye on aircon in cabin and if I did not feel it cooling to turn off the aircon, as the fan maybe faulty and so not cooling the condenser so not cooling the car.

I did a couple of more tries whilst driving on the way home and it seemed to be working fine.

Got home turned off engine then tried after 30mins whilst checking fan in front of radiator, this time it took anywhere between 15-45 seconds to kick in, on most occasions it tried to spin and seemed hesitant as such….I also noticed that upping the fan speed on the air con output controls in the cabin made it ‘kick in’ faster.

No idea how quickly the fan for air con purposes should fire up or what else maybe wrong?ANY input great