Channel 7 - Control Head Outputs

Channel 7 displays the output signals that are calculated by the control panel head. These outputs are displayed by horizontal and vertical lines.


To activate the display:





- If necessary, briefly press the OFF button while pressing the OUTSIDE TEMP button
- Press the WARMER button until '07 is displayed.
- Press the COOLER button to display the output information.






The horizontal or vertical lines will be on when the control panel head is generating the corresponding output signal. This function can be used to check the system's operation.


Example:
No air is being delivered from the floor vents during heating. Channel 7 can be activated on the display to verify if the control panel head is generating that specific output signal.


The control head temperature is set to HI and channel 7 fault display activated. The display shows the following:






The display indicates that the control panel head is generating the signal to open the floor vents. Therefore, the problem is either in the programmer, wiring to the programmer, or a mechanical fault in the vacuum system.