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

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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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Contents Contrc Unit Sizes and Modular Combinations Unit ModelKeypaddisplay Ground Fault Interrupter Source PSIRELAY, B FieldLOCAL/ENABLE-STOP-CCN Switch Positions and Operation Compressor Protection Control Module CpcsThermistor and Transducer Locations ThermistorsCapacity Control StepsLoading Sequence a Loading Sequence B Unit Control Steps060A\~**Hz Capacity Control Steps, 040-070 cantLoading Sequence a Loading Sequence B Unit Oy&ya Capacity Control Steps, 040-070 cantFBI 08Aqy,y AitiA4l&pi’ Steps BP’Loading Loading Sequence B Unit Control Altt Bitt Wtf2Z$’Altt Loading Sequence a Loading Equence B Unit’tt Amrox$-t&Z3 Loading Sequence a Quence B Unit Control Displacement Compressors UWrW Arwox A2.p $#l 110 50 HzAlt,Blv Loading Equence a Displacement Compressors MvroxEquence B Awrox Drt,t 130, 24OA130,24OA 130, 240AAttll’ Loading Equence a UnitT3g A2.pLoading Sequence a Sequence B Unit $$V LOAD11 Control Size StepsLoadin Sequence B Unit Displacement Compressors UVvW PWprox 8514wB2,B3 Al% Al’,BILoading Sequence B Unit Capacity Control Steps, 225, 250,280 30GT Displacement Compressors AwoxLoac \IG Sequence a Loading Sequence B Unit Loac Capacity Control Steps, 225, 250,280 cant30GT Capacity Control Steps, 225, 250, 280 cant 2501G Sequence a Loading Sequence B Unit ControlCondenser Fan Sequence FAN Arrangement FAN Numbers Contactor ControlledCondenser Fan Sequence cant FAN Arrangement FAN Numbers~jACToR 30GT250 60 HzKeypad and Display Module Also Called Hsio Keypad and Display Module UsageAccessing Functions and Subfunctions Functions and SubfunctionsFunctions Operation Keypad Display Description Entry ResponseKeypad Directory Keypad Directory cant Status cant Subfunction Keypadentry Display CommentPressure AnalogSubfunction Outputs Display Subfunction Keypad Entry Display Comment OutputsOutputs HgbraKeypad Directory cant Test cant Subfunction Keypad Entry Display Comment OverrideClock Select QzqKeypad Directory Schedule cant Keypad Directory cant Service cord Keypad Directory cant Example 1 Reading Alarm Codes Operationat and Mode Display CodesExample 2 Reading Current Operating Modes Local on Cool Alarms Modes Local on M O D EKeypad Display Example 4 Reading and Changing Chilled Water Set Point Example 3 Using Test FunctionKeypad Display Comments Entry Response Example 5 Using Return Water Temperature Reset Keypad Display CommentsCRST2 CrstiExample 6 Changing Reset Type Reset Reference Temperature Outdoor AIR 1OR Space TempEKE FLD CFG Ertyp Lstyp Demand Keypad Display Entry ResponsePpiq Demand Limiting Example 8 Setting Time of Day Day of WeekMAX Demand Kimax = Factory Configuration Keystrokes Adjustable Field ConfigurationsExample 9 Using the Schedule Function DisplayExample 9 Using the Schedule Function cant Example 10 Holiday Schedule FunctionTypical Stoppage Faults and Reset Types Complete Unit Stoppage Complete unit stopAlarm Codes Action Taken Probable Cause N T R O LPage Page ’ Sl R ’ STnanz Switch CGFCompressor Contactor Relay SNBFig. IOD 24-V Safety Circuit Wiring 225, 250, and 280 Units Electronil c Expansion Valve EXV Page Thermistor and Pressure Transducer Locations Suction Refrigerant Temperature Sensor T7, T8 040-210Associated Modular Units Pressure Transducer 2i.b Voltage Drop Voltage Resistance DropEqualizer OIL Pressure Suction Pressure Sight Glass Line Transducer Each CompressorControl Modules PSIO, SIO Address SelectorSensor Bus Wiring Communications Processor Module PsioComm Troubleshooting 1NO. of Accessory Standard and Accessory UnloadersCircuit Circuit B Or2 30GN190-210 3OGT225,250,280 Accessory Unloader Control Wiring 080-110 SO/SO Hz and 130 60 HzHgbpr TLNContactor Switch Circuit Breaker Transformer LmyTEF4Module STAGE2Module J7-15Thermistor ElJ7-16Installation Remote Dual Set Point ControlPage Page Copyright 1994 Carrier Corporation

040-420 specifications

The Carrier 040-420 is a highly regarded commercial HVAC unit specifically designed for efficient heating and cooling in medium- to large-sized buildings. Known for its reliability and advanced technology, this system is ideal for a variety of applications ranging from offices to industrial spaces.

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