G Y

Contrc

040-420

with h

I

CONTENTS

_.- - v----w

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

--I-

 

 

 

 

 

 

 

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Carrier 040-420 specifications Contrc
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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.

One of the main features of the Carrier 040-420 is its energy efficiency. The unit utilizes advanced compressors and a high-efficiency heat exchanger, which work together to minimize energy consumption while maximizing performance. This is crucial in today’s energy-conscious environment, as businesses strive to reduce operational costs and their carbon footprint. The unit also boasts a high SEER (Seasonal Energy Efficiency Ratio) rating, making it an attractive option for those looking to lower their utility bills.

Equipped with advanced inverter-driven technology, the Carrier 040-420 allows for precise control of indoor climate conditions. This means that the system can adjust its output according to the actual cooling or heating demand of the space, resulting in enhanced comfort and reduced energy waste. The inverter technology also contributes to quieter operation, allowing for a more pleasant indoor environment.

Another feature that sets the Carrier 040-420 apart is its smart controls. The unit can be integrated with Carrier’s Building Automation Systems, enabling remote monitoring and management. This allows facility managers to optimize energy use and immediately respond to any performance issues. Additionally, the unit is compatible with various control interfaces, making it easy for users to adjust settings or schedule operations according to the building's occupancy patterns.

The robust design of the Carrier 040-420 ensures longevity and durability, even in harsh environmental conditions. Its weatherproof casing protects the internal components, enhancing the unit's performance and reliability over time. Maintenance is simplified with accessible design features, allowing technicians to conduct service checks and repairs without extensive downtime.

Overall, the Carrier 040-420 stands out as a modern HVAC solution that combines energy efficiency, advanced technologies, and user-friendly features. Its commitment to performance and sustainability makes it an ideal choice for businesses looking to enhance comfort while being mindful of their energy consumption. With its blend of innovation and reliability, the Carrier 040-420 continues to be a preferred option in the commercial HVAC market.
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