Override Test Codes

IPC override feature allows testing of certain system functions regardless of normal program instructions, provided test conditions are met.

When an override test is selected, current mode of the function will be displayed as a percentage on CCC panel. If test conditions are not met, CCC panel will display "-- --" in place of override value selected. This display will alternate between "-- --" and normal program value whenever an override value is not commanded.

After selecting an override value, press WARM button to increase override value, or press COOL button to decrease override value. Upon release of either button, display may either remain at override value or automatically return to normal program control, depending on which item or function is being overridden at that time.

Selection of another override test or selection of another system will cancel current override test. See Figure . Overriding value beyond one extreme will display "-- --" momentarily, then display will jump to opposite extreme. If button is released while "-- --" is displayed, normal program control will resume and display will begin alternating again.