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Carrier 69NT40-541-304 - User Manual

Carrier 69NT40-541-304
106 pages
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Container Refrigeration
2
5
18
11, 12, 13
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17
8
6
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6
OPERATION, SERVICE AND PARTS
SUPPLEMENT
For
Dual Temperature Container
Refrigeration Units
69NT40-541-304 and 69NT40-541-345
T-319 Rev A

Table of Contents

Questions and Answers

  • K
    kathycooperAug 4, 2025
    What to do if the Remote Liquid Line Solenoid Valve (RLSV) in my Carrier 69NT40-541-304 is inoperative?
    • K
      kimberlycrawfordAug 4, 2025
      If the Remote Liquid Line Solenoid Valve (RLSV) is inoperative, you should check and replace it.
  • P
    Philip LivingstonAug 10, 2025
    What to do if the Remote Secondary Supply Sensor (SSP- Ly) is controlling the Remote evaporator of my Carrier 69NT40-541-304 Refrigerator?
    • P
      pgrayAug 10, 2025
      If the Remote Secondary Supply Sensor (SSP- Ly) is controlling the Remote evaporator, it might be because the Remote Primary Supply Sensor (PSPLy) has failed. In this case, you should check and replace the Remote Primary Supply Sensor (PSPLy).
  • A
    Andrew LopezAug 16, 2025
    What to do if the Remote Primary Return Sensor (rEtUR) minus 3.5 degrees F is controlling the remote evaporator in my Carrier 69NT40-541-304 Refrigerator?
    • C
      Cheyenne SmithAug 16, 2025
      If the Remote Primary Return Sensor (rEtUR) minus 3.5 degrees F is controlling the remote evaporator, it indicates that both the Remote Secondary Supply Sensor (SSPLy) and the Remote Primary Supply Sensor (PSPLy) have failed. You should check and replace both sensors.
  • C
    Calvin ThomasAug 22, 2025
    Why remote evaporator does not run in Carrier 69NT40-541-304 Refrigerator?
    • K
      Kelly PetersAug 22, 2025
      The remote evaporator might not run because the host unit has not reached the set point. Wait for the host unit to reach the set point.
  • J
    Jeffery WatsonAug 28, 2025
    Why remote evaporator provides air circulation only in Carrier 69NT40-541-304 Refrigerator?
    • J
      Justin MooreAug 28, 2025
      If the remote evaporator is only providing air circulation, it could be because Code Select Cd52 is disabled. Enable it to resolve the issue.

Summary

Carrier Container Refrigeration Operation, Service, and Parts Supplement

Section 1 Safety Summary and Precautions

General Safety Notices and First Aid

General safety notices, first aid procedures, and operating precautions for unit safety.

Maintenance Precautions and Unit Label Identification

Safety guidelines for maintenance, electrical safety, and identification of unit hazards.

Specific Warning and Caution Statements

Specific safety warnings and cautions applicable to unit operation and maintenance.

Section 2 Description of Dual Temperature System

Section 3 Microprocessor Control System

Temperature Control Microprocessor and Display

Description of the microprocessor system, display module, and keypad interface.

Section 4 Unit Operation Procedures

Section 5 Troubleshooting Guide

Remote Evaporator Not Running or Insufficient Cooling

Troubleshooting steps for when the remote evaporator does not run or has cooling issues.

Sensor Malfunctions and Host Unit Shutdown Alarms

Diagnosing remote supply sensor issues and host unit shutdown alarms.

Section 6 Dual Temperature Service Procedures

Section 7 Electrical Wiring Schematic

Section 8 Service Parts Information

Section 9 Refrigeration Unit Area Locator

Carrier 69NT40-541-304 Specifications

General IconGeneral
BrandCarrier
Model69NT40-541-304
CategoryRefrigerator
LanguageEnglish

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