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TM 11574A-OI

2-59

(1) The keypad (Figure 2-25) is mounted on the right-hand side of the control box. The keypad

consists of 11 push button switches that act as the user’s interface with the controller.

Descriptions of the switch functions are provided in Table 2-1.

Figure 2-24. Keypad.

(2) Display Module.

The display module (Figure 4-16) consists of five digital displays and seven indicator lights.

The indicator lights include:

(a) Cool -- White LED: Energized when the refrigerant compressor is energized.

(b) Heat -- Orange LED: Energized to indicate heater operation in the heat or defrost mode.

(d) In-Range -- Green LED: Energized when the controlled temperature probe is within

specified tolerance of set point.

(e) Supply -- Yellow LED: Energized when the supply air probe is used for control. When

this LED is illuminated, the temperature displayed in the AIRTEMPERATURE display is

the reading at the supply air probe.

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MicroLinks Tech H-CAM Istruzioni per gli Interventi Pagina 85