They do not work heater.

Hello, I have a problem with the heater of my Seat Cordoba 1.9 TDI 100 hp of 2005.
I pass to comment on the problem, looking in the fuse box if there was any problem of fuses with the glass of the driver's door that when I arrive at the top of the closing returns only down again (this problem if someone tells me something I appreciate it, but the problem I ask for advice is for the heater of the diesel), I had a short Spark in the fuse box and now when I put the contact, the chivato of operating the heater turns on and turns off very fast and does not arrive current to the heaters, I have measured if there was any molten heater and they are fine, I have also measured the operation of the relay 53 that controls the heater and it is also fine, but outside the car, when I put it in the car and act the contact, nor does the clac Being something of switchboard?, hot the engine goes perfect and cold it takes a little, but it starts too.
Thanks for your comments.
Greetings.

Nobody knows if between relay 53 and the switchboard or how do some call it the control unit goes something else that has spoiled me?
Greetings and thanks.