ZX air conditioning

Good to all

I have a problem with a Citroen ZX of 1997 A 1.9 TD, the air conditioning does not come cold, and loaded the air, I put the air conditioning filter I think it is called discarking or something like that, the one of habitaculus for that it came out more flow, but still does not cool.
Now I want to check the relays, but I have no manual of that car and in the motor compartment he has 4 or 5 relays but I don't know what they are, if someone could send me the explanation of fuses and relays of this model.

I await your help

First of all, check that the compressor connects when you turn it on and if the light is turned on on the board Yrisa the cables to see if there is any disconnected.-

Good morning and thanks

the compressor does not hook, we have looked at them and they are fine.

What can I do?

I await your answer
a greeting