Carrier 040-420 specifications with h, Contents, Safety Considerations, Keypad and Display

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040-420

with h

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CONTENTS

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P a g e

SAFETY CONSIDERATIONS . . . +. . . . , e+. . , . . , . 1 GENERAL . . . . . . , . . . . , . , . . . , . , . . . . , . , . . . . . . . . 2

MAJOR SYSTEM COMPONENTS . . . . . . . . . . . . 2-4 Processor Module . . . . . . . . . . . . . . . . . . . . . . . . ...2 Low-Voltage Relay Module . , . . . . . . , . , . , , . . . . . 2 Electronic Expansion Valve Module . . . . . . . . . . . 2 Options Module . . . . . . . . . . . . . . . . *. . . . . . . . . . . . 2 Keypad and Display Module

(Also Called HSIO or LID) . . . . . . . . . . . . . . . . . . 2 Control Switch . +. . . , . . . . . . . . . . . . . . . . . . . . . . . . 2 Electronic Expansion Valve (EXV) . . . , . . . . . . . . 4 Sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...4 Compressor Protection Control

Module (CPCS) . . , . . . . . . . . . . . . . . . . . . . . . . . . . 4

OPERATION DATA . . . . . . . . . . . . . , . . . . , . +. . . , 5-47 Capacity Control . . . . , , . . . . . . . . . . . . . . . . . . +. . . . 5 Head Pressure Control . . 1. . . . . +. . . . . . . . . . . . . 26 Pumpout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...27

Keypad and Display	Module	28
(Also Called HSIO	or LID)

ACCESSING FUNCTIONS AND :tiBFtiN?TI’dNS

SUMMARY DISPLAY

KEYPAD OPERATING INSTRUCTIONS STATUS FUNCTION

TEST FUNCTION HISTORY FUNCTION SET POINT FUNCTION SERVICE FUNCTION SCHEDULE FUNCTION

TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . 48-67

Checking Display Codes . . . . . . . . . . . . . . . . . . . . . 48

Unit Shutoff . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

Complete Unit Stoppage . . . . . . . . . . . . . . . . . . . . 48

Single Circuit Stoppage . . . . . . . . . . . . . . . . . . . . . 48

Lag Compressor Stoppage . . . . . . . . . . . . . . . . . . 48

Page

Restart Procedure . . . . . . . . . . . . . . . . . . . . . . . ...48

•POWER FAILURE EXTERNAL TO THE UNIT

Alarm Codes . . . . . . , . . . . . . . , . . . . . . . . . . , . . . . . 49

Compressor Alarm Circuit . . . . . e+. . . . . . . . . . . . 50

Electronic Expansion Valve . . . . . . . . . . . . . . . . , . 56

•EXV OPERATION

•CHECKOUT PROCEDURE

Thermistors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...60

a LOCATION

•THERMISTOR REPLACEMENT (Tl, T2, T7, T8) (Compressor and Cooler)

Pressure Transducers . . . , . . . , . . . . . . +. . . +. . . . 60

•TROUBLESHOOTING

•TRANSDUCER REPLACEMENT

Control Modules . . . . . . . . . . . . . . . . . . . . . . . , . . . . 64

•PROCESSOR MODULE (PSIO), 4IN/40UT

MODULE (SIO), LOW-VOLTAGE RELAY

MODULE (DSIO), AND EXV DRIVER MODULE (DSIO)

. RED LED

•GREEN LED

•PROCESSOR MODULE (PSIO)

•LOW-VOLTAGE RELAY MODULE (DSIO)

. 4IN/40UT MODULE (SIO)

ACCESSORY UNLOADER INSTALLATION 68-7 1

Installation . . . . . . . , . . . s. . . , . . . . s. . . . . . . . .‘.‘. . 68

•040-110, 130 (60 Hz) UNITS (and associated modular units)

•130 (50 Hz), 150-210, 225, 250, and 280 UNITS (and associated modular units)

FIELD WIRING . . . . . . . . . . . . , . . . . . . . . . . . . . . . 71-73

REPLACING DEFECTIVE PROCESSOR MODULE (PSIO) . . . . +s. . . . . . . +. . . . . . * . +. 73,74

Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...73

SAFETY CONSIDERATIONS

Installing, starting up, and servicing this equipment can be hazardous due to system pressures, electrical compo- nents, and equipment location (roof, elevated structures, etc.). Only trained, qualified installers and service mechanics should install, start-up, and service this equipment.

When working on this equipment, observe precautions in the literature, and on tags, stickers, and labels attached to the equipment, and any other safety precautions that apply.

Follow all safety codes. Wear safety glasses and work gloves. Use care in handling, rigging, and setting this equipment, and in handling all electrical components.

Electrical shock can cause personal injury and death. Shut off all power to this equipment during installation and service. There may be more than one disconnect switch. Tag all disconnect locations to alert others not

This unit uses a microprocessor-based electronic con- trol system. Do not use jumpers or other tools to short out components, or to bypass or otherwise depart from recommended procedures. Any short-to-ground of the control board or accompanying wiring may destroy the electronic modules or electrical components.

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.

Book 2	P C 9 0 3	Catalog No. 563-015	Printed in U S A.	Form 30GN-2T	pg 1	1-94	Replaces: 30GB,GT-1 T ,
T a b 5c							30GN-1T
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