BUS BODY ELECTRONICS Contents List of figures List of Tables Introduction Intended Use Symbols used Description of the control panel Display description Usage Turn ON Turn OFF Driver’s workplace functions 2.3.1 Adjust Temperature 2.3.2 Adjust blower speed 2.3.3 Adjust air flow direction /defrost function 2.3.4 Toggle between fresh air and air recirculation Passenger compartment functions...
BUS BODY ELECTRONICS 1. Introduction 1.1 Intended Use The SC1000 is a device designed to control HVAC components (heating, ventilation, air -condi- tioning) for buses, e.g. roof-top air-conditioning systems, heaters etc. It comprises always of a control panel (control device with human-to-machine interface) which is integrated into the dashboard, and of one or more substations, which are controlled by means of the control panel.
BUS BODY ELECTRONICS A substation is a control device with power outputs for the control of all the components inte- grated in the AC unit. Figure 2 - SC1000 Substation 1.2 Symbols used Note...
BUS BODY ELECTRONICS 1.3 Description of the control panel Figure 3 - SC1000 Control Panel Components Driver’s seat Passenger Compartment 5. Fresh air / air recirculation Reheat (dehumidify) 1. Fresh air / air recirculation but- button (optional) button (optional) 6. Blower speed button 10.
BUS BODY ELECTRONICS 1.4 Display description Figure 4 - SC1000 Display Screen A. Indicated value J. Heater is on B. Appears if the lowest adjustable room K. Fresh air flaps open temperature is reached C. Is indicated with the setpoint tempera- L.
BUS BODY ELECTRONICS 2. Usage 2.1 Turn ON ➔ Switch on the ignition. ➔ The control panel starts automatically. ➔ The current software version (1.0) and the current re- Figure 5 - SC1000 Release lease appear on the display (Fig.5). ➔...
BUS BODY ELECTRONICS 2.3.2.1 Increase blower speed Turn the knob (Fig.3, No.3) clockwise to 5 o’clock position. Figure 7 - SC1000 Current Blower Speed ➔ Blower speed increases incrementally by 10. Level ➔ The current blower speed level is shown in the display (Fig.
BUS BODY ELECTRONICS 2.3.4 Toggle between fresh air and air recirculation Note The air recirculation mode is not limited in time. Press button (Fig.3, No.1), to toggle between fresh air and air recirculation modes. ➔ Fresh air: the LED next to the fresh air / air recirculation button is not lit.
BUS BODY ELECTRONICS 2.4.1.2 Terminate Press button shortly. ➔ Mode deactivated. ➔ the LED next to the button goes out, “AUTO” disap- pears from the display. 2.4.2 Adjust temperature Press button. ➔ Temperature +1˚C. Press button. ➔ Temperature -1˚C. 2.4.2.1 Display the current room or outside temperature Press button.
BUS BODY ELECTRONICS 2.4.3.1 Activate press button (Fig. 3, No.6). ➔ Manual blower speed level adjustment active. ➔ The LED next to the button lights up and the current blower Figure 12 - SC1000 Manual Blower speed level can be read on the display (Fig.12). Speed Level ➔...
BUS BODY ELECTRONICS Note The air recirculation mode is limited to 10 minutes. After this time the fresh air ducts are automatically regulated depending on the room temperature setpoint, the duct temperature and the current outside temper- ature. Press the button when the manual operation of the fresh air flaps is active.
BUS BODY ELECTRONICS ➔ “Pre“ appears on the display (Fig. 14). Press button (Fig.3, No.12) once. ➔ ”ti-A“ appears on the screen (Fig. 15) Press button to confirm. Figure 15 - SC1000 ti-A ➔ ➔ ”hour“ appears on the screen (Fig. 16) and the hour digits flash.
BUS BODY ELECTRONICS Hinweis Seven memory locations (PrE 1-7) are available for storing different start times. The system starts the Figure 20 - SC1000 Memory Location pre-heating mode at the respective times. 2.5.3.1 Choose start time Press button to display the memory locations. ➔...
BUS BODY ELECTRONICS 2.5.3.3 Activate pre-heating mode Press button to activate the pre-heating mode with the chosen start and operation time. 2.5.3.4 Terminate Press button to exit the menu. 2.6 Reheat Note The reheat mode can only be activated in the AUTO mode (when the engine is running) and at at least 8°C outside temperature.
BUS BODY ELECTRONICS 2.7 Errors Note If an error occurred, the error icon (Fig.4, F) appears on the display. 2.7.1 Error read out Figure 25 - SC1000 Error read out 2.7.1.1 Activate Press button (Fig.3, No.1) at driver’s workplace for 2 sec- onds .
BUS BODY ELECTRONICS ➔ If the error has not been corrected, it appears again with a dot between the third and fourth digit of the error code within the error messages (Fig.28). 2.7.1.5 Terminate Press button (Fig.3, No.1) at the driver’s workplace until the standard screen appears. 2.7.2 Error message overview Error message dis- Description...
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BUS BODY ELECTRONICS Error message dis- Description Cause/remedy played has failed (substation - Electrical and visual check of all plug con- 2 front) nections 2. Replace components Motor 1 of the con- vector water valve 3. Replace control unit has failed (substation 2, rear) Outside temperature 1.
BUS BODY ELECTRONICS Error message dis- Description Cause/remedy played - Replace the solenoid valve - Check the wiring of the condenser fan - Replace the condenser fan - Check refrigerant charge (too much / too little). If there is too little a leak test must be performed - Examine the roof-top airconditioning unit for soil- ing and check the function of the fans - Replace substation...