the line contactor coil is feeded through F6 fuse - conectors X27.1 - X27.2 - X26.1 in the rear relay card to positive side of coil. The other negative side of coil is feeded directly from conector X11.4 in the controller through conectors X60.2-X26.2 also in the rear relay card.
Check for shortcircuits in the rear relay card or check Mcu inside controller.
Regards
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