Replacement of the control unit of the heating and ventilation unit must be carried out in the following order. Prepare fixture «64.1.010» and, using it, unfix the block (1, fig. 17.19) heater control and pull it out in the direction of the arrow. Disconnect the loop from the control unit and remember (fix) purpose of color marking of cables.
Open cable holders (1, fig. 17.20) in the directions indicated by the arrows, remove the lug (2) bypass device (3) and remove the cables of the control unit.
The installation of the control unit should be carried out in the reverse order, while it is necessary to follow the purpose of the cables.