Technical Ac problem

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Technical Ac problem

Micber

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Jun 7, 2025
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Hi All
Michael here from Sweden
I have a problem with my AC, it doesn't cool. I'm sure the problem is that the cooling fan doesn't start. When I press the AC button the light comes on and the AC compressor starts and the hoses get hot.
But the cooling fan doesn't start and I'm wondering if anyone knows what could be wrong. The fuses are all good, I've measured them.
It's a Fiat Ducato 2010 with AC as mentioned
All tips are welcome

Best regards Michael
 
Hello @Micber

I’m having my own AC troubles, chasing leaks around the system which appears to be very fragile….

I’m struggling to understand what occurs if the AC compressor is turning but the condenser coolant fan is not running as under normal conditions the fan is not constantly running. At idle it can be heard to pulse on and off
If you take the vehicle for a drive forcing air through the condenser, does the AC temp at the cabin vents reduce?

Have you check the fan motor has continuity and runs when given a 12v feed? Is there power getting to the fan and its relay?

Is the quantity of refrigerant correct? Could you have too little refrigerant but too much oil and/or air in the system, i.e have you topped up with a diy AC refrigerant can and the quantities are incorrect?
What pressures are the high and low circuit showing?

Are there any fault codes reported.
 
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