1. Remove the handles from the control levers.
2. Remove the cover from the control panel.
3. Remove the radio.
4. At this stage, the temperature control/operation switch levers, the recirculation switch or the fan control switch can be removed separately.
5. If the main arm block is to be removed, unscrew the six fixing screws. Disconnect the temperature control cable and the operating mode switch cable from the heater. Disconnect the electrical wiring and remove the control unit.
6. If the fan switch or recirculation control must be removed, unscrew the mounting screws and disconnect the wiring connector.
For installation:
7. Put the fan switch or recirculation connector in place, connect the wiring and fasten the mounting screws.
8. Insert the heater controller in its place and lay the cables to the heater.
9. Attach the cables to the heater in the correct order.
10. Screw the fixing screws to the control panel.
11. Install the radio.
12. Close the cover on the control panel and install the handles on the levers.