Carrier TRANSICOLD Integra 35X

Questions and Answers

A
Anthony Roberson IIAug 5, 2025
What to do if the High Pressure Switch (HP1) is open in my Carrier TRANSICOLD Integra 35X Refrigerator?
- C
  Cory DillonAug 6, 2025
  If the High Pressure Switch (HP1) is open in your Carrier TRANSICOLD Refrigerator, several factors could be the cause. The unit might be undercharged, or there could be noncondensibles in the system. Check the condenser fan to ensure it's working correctly. A failed discharge check valve (in standby or road mode) could also be the culprit, requiring replacement. Lastly, the switch itself might have failed.
S
Sabrina BrownAug 16, 2025
What to do if the Low Pressure Switch (LP) is open (Road) in my Carrier TRANSICOLD Refrigerator?
- S
  Sarah HancockAug 16, 2025
  If the Low Pressure Switch (LP) is open on your Carrier TRANSICOLD Refrigerator while on the road, it could be due to several reasons. The unit might be undercharged. The liquid line filter drier could be restricted, or the TXV strainer might be plugged. It's also possible that the TXV isn't functioning correctly or the switch has failed. Verify the operation of the evaporator fans.
C
Christopher NicholsAug 26, 2025
Why is the Standby Compressor Thermal Overload open in my Carrier TRANSICOLD Integra 35X Refrigerator?
- J
  John MillerAug 26, 2025
  If the Standby Compressor Thermal Overload is open in your Carrier TRANSICOLD Refrigerator, it could be due to a couple of reasons. Check the liquid injection valve. Also, low electric line voltage could be the cause.

Summary

Safety Summary

General Safety Notices

Essential precautions for safe operation and maintenance of the unit.

First Aid Procedures

Immediate actions to take in case of injury during operation or service.

Operating Precautions

Guidelines for safe handling and use of the refrigeration unit.

Maintenance Precautions

Steps to ensure safety during maintenance and repair activities.

Refrigerant Safety

Hazards associated with refrigerants and recommended handling practices.

Hazard Label Explanations

Explanations of hazard levels indicated by DANGER, WARNING, CAUTION, and NOTICE.

Unit Description

Unit Introduction

Overview of the Carrier Transicold 35X truck refrigeration units.

General Unit Description

High-level overview of the unit's design, components, and control system.

Condensing Section Components

Detailed description of components within the condensing section of the unit.

Evaporator Section Components

Detailed description of components within the evaporator section of the unit.

Unit Specifications

Technical data including compressor, refrigeration system, and electrical specifications.

Refrigerant Circuit Operation

Explanation of refrigerant flow during cooling, heating, and defrost cycles.

Operation

Control System Overview

Description of the microprocessor and Cab Command control system.

Unit Start-Up Procedures

Step-by-step instructions for starting the refrigeration unit.

Setpoint Adjustment

How to adjust the temperature setpoint using the control panel.

Defrost Operation

Details on automatic and manual defrost cycles and safety features.

Alarm Display and Access

How to view and interpret alarm messages and codes on the unit.

Temperature Control

Unit Operation Sequence

Explains the unit's operational sequence in cooling, heating, and null modes.

Defrost Cycle Details

Describes the defrost cycle initiation, operation, and termination.

Minimum Off Time

Explains the minimum shut-down period to prevent rapid cycling.

Service

Scheduled Maintenance

Recommended maintenance intervals and procedures for unit longevity.

Manifold Gauge Set Installation

Procedure for connecting and preparing the refrigerant manifold gauge set.

Refrigerant Charge Handling

Steps for safely pumping down or removing refrigerant from the system.

Evacuation and Dehydration

Process for removing moisture and air from the refrigeration system.

Refrigeration System Charging

Procedures for correctly charging the system with refrigerant.

Filter Drier Service

How to check for and replace the filter drier component.

Pressure Control Switch Service

Procedures for removing and checking high, condenser, and low pressure switches.

Thermostatic Expansion Valve (TXV)

Information on TXV replacement, superheat measurement, and strainer checks.

Compressor Oil Specification

Specifies the type of polyester (POE) oil required for the compressor.

Evaporator Coil Cleaning

Instructions for cleaning the evaporator coil to maintain airflow and efficiency.

Condenser Coil Cleaning

Instructions for cleaning the condenser coil to ensure proper heat transfer.

Troubleshooting

Troubleshooting Introduction

Overview of the troubleshooting section and how to use alarm indications.

Refrigeration Troubleshooting

Common issues and causes for refrigeration system malfunctions.

Abnormal Pressure Diagnosis

Troubleshooting high or low discharge and suction pressures.

Abnormal Noise Diagnosis

Identifying and resolving unusual noises from the compressor or fans.

Evaporator Air Flow Issues

Diagnosing and fixing problems related to evaporator air flow.

Schematic Diagrams

Schematic Diagrams Introduction

Explains that schematic diagrams for unit models are provided.