Peugeot 307 1.4 HDI Refrigeration problem

Hello, I have a Peugeot 307 1.4 HDI. My problem is that automatic and manual air conditioning has stopped working while the engine fan. The problem that worries me most is the fan because I live in a mountain area and heats a lot on each trip.
What checks do I have to do?
The fuses are all well check them one by one with tester.

Check the relays, temperature sensors, system connectors and check that thermostat is not glued, the most common are contact problems clean well with electronic cleaner

Thank you for your help friend, but the problem is where are those pieces inside the car or how I locate them, there are no plane or track where they are. I am a little fish in the matter.

Hello, the power fuses are found in the motor fusera, raising this, they are at the bottom, I think it is one of 30 A. I hope it serves you. A hug.

The first thing you should do if you do not have planes of the vehicle is to have a minimum automotive multimeter or in its effect that has a minimum inpedance of 100000 omnia or 10 mega omnios. Then in the fuse box cover it must be macked with the value of each fuse and what is its consumption element, then in pesos to measure continue between the fuses that are related to the system of air conditioning and refrigeration of the VICULUM. If you find that the lines be brought to the ECU you must be in the consumer of the consumption of the relays box, I advise you that what Baya finding does so in a plane for more ease of understanding the cycuito I hope you have good results luck