Carrier 040-420 Keypad and Display Module Also Called Hsio, Keypad and Display Module Usage

Keypad and Display Module (Also Called HSIO

or LID) - The only function of this module is to allow the operator to communicate with the processor. It is used to enter configurations and set points and to read data, per- form tests, and set schedules. This device consists of a key- pad with 6 function keys, 5 operative keys, 12 numeric keys (0 to 9, 0, and -), and an alphanumeric g-character LCD (liquid crystal display). See Fig+ 3. See Table 6 for key usage.

ACCESSING FUNCTIONS AND SUBFUNCTIONS - See Tables 6 - 8. Table 7 shows the 6 functions (identified by name) and the subfunctions (identified by number).

Fig. 3 - Keypad and Display Module

SUMMARY DISPLAY - When keypad has not been used for 10 minutes, display automatically switches to the rotat- ing summary display. This display has 4 parts, listed be- low, which appear in continuous rotating sequence.

DISPLAY 1 EXPANSION

TUE 15:45 TODAY IS TUE, TIME IS 1545 (3:45 PM)

CLOCK ON	UNIT IS ON VIA CLOCK SCHEDULE
COOL 1	I NUMBER OF STAGES IS 1

2 ALARMS 1 2 ALARMS DETECTED

AUTOMATIC DISPLAY OPERATION/DEFAULT DIS- PLAY - In this mode, the keypad displays the current time (24”hour format), current operating modes, cooling capac- ity stages, and total number of alarms.

MODE X COOL x

DOW - Day of Week

-Hour(s)

K - Minute(s)

The default display is displayed every 2 seconds if there has been no manual input from the keypad for 10 minutes.

To return to automatic display, enter ~~~~a t a n y t i m e .

Table 6 - Keypad and Display Module Usage

FUNCTION			USE
K E Y S
STAT		STATUS - For displaying diagnostic codes and
0		current operating information about the machine.
HIST		HISTORY - For displaying run time, cycles and
q		previous alarms.
SRVC		SERVICE - For entering specific unit configura-
0		tion	information.
EST		TEST - For checking inputs and outputs for
E•		proper operation.
E•CHD		SCHEDULE - For entering occupied/unoccupied
		schedules for unit operation
S E T		SET POINT - For entering operating set points
		and	day/time information.
q
OPERATIVE			USE
K E Y S
EXPN		EXPAND - For displaying a non-abbreviated ex-
El		pansion of the display
CLA		CLEAR - For clearing the screen of all displays
El
c t l		UP ARROW - For returning to previous display
		position,
c c l		DOWN ARROW - For advancing to next display
		position.
qENTR	A	ENTER - For entering data

KEYPAD OPERATING INSTRUCTIONS (Refer to Table 9.)

1.White keys on left side of keypad are shown and oper- ated in these instructions according to the following ex-

ample: keypad entry meansH press the q , then

the white key marked H .

2. The standard display uses abbreviations. Expanded in-

formation scrolls through the display whenever q key is pressed.

3.All functions are made up of a group of subfunctions. To enter a subfunction, first press subfunction number desired. Then press the function key in which the sub- function resides. To move within that subfunction, press

the q or m arrow. For example, a mpl enters the Temperature Information subfunction.

4.At any time, another subfunction may be entered by en- tering the subfunction number, then the function key.

5.Prior to starting unit, check leaving fluid set point for correct setting. Refer to Set Point Function section on page 39.

6.Depending on system configuration, all displays may not be shown. All displays are shown unless marked with the following symbol.

*Must be configured.

For additional unit start-up procedures, see separate In- stallation, Start-Up and Service Instructions supplied with unit.

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