Replacement of the master board, slave board and BUS
thermostat
18
10.
Withdraw the control system casing.
To do this, push the control system casing in the direction of the rear panel by approx. 3 - 5 mm in
such a way that the press-in keyhole fasteners unlatch from the 4 keyholes of the casing wall.
11.
Remove the cable from the master board and remove it out of the device.
12.
Install the new master board in the device. Be sure to install the cables according the circuit diagram
(see appendix).
