How to troubleshoot a Thermo King Commercial Food Equipment compressor that does not run?
If the compressor in your Thermo King Commercial Food Equipment isn't running, first ensure there is power at the source, plug, compressor contactor, and overload terminals (with the contactor closed). Also, check for power at the motor terminals.
What to do if Thermo King Commercial Food Equipment is not working in Electric Mode?
If your Thermo King Commercial Food Equipment unit isn't working in electric mode, verify that the AC Overload Relay is off. Then, inspect the fuses on the PCB, and check the voltage on Pin 2 C-9 and Pin 1 C-9. If problems persist, the Cab Control Box may need replacement.
Why is the temperature displayed out of range on my Thermo King Commercial Food Equipment?
If the temperature displayed on your Thermo King Commercial Food Equipment is out of range, verify that the Cab Control Box 12/24V selector is in the 24V position. If it is, check the thermostat sensor.
Why does the compressor hum but not run in my Thermo King Commercial Food Equipment?
If the compressor in your Thermo King Commercial Food Equipment hums but does not run, the power source may be single phasing. Check the capacitors. You can also check the transformer for power output and the rectifier for rectifier output.
What to do if the defrost cycle is not initiated when the manual defrost switch is pressed on Thermo King Commercial Food Equipment?
If the defrost cycle is not initiating when you press the manual defrost switch on your Thermo King Commercial Food Equipment, make sure the box temperature is higher than the setpoint temperature and the Evap. Coil temperature is lower than 36 F (Klixon closed). Then, press the manual defrost switch and check the voltage on Pin 8 C-9. If it is still not working, replace the Cab Control Box.
Why Thermo King Commercial Food Equipment is stopped by the AC OL Relay, but the AC Overload LED is OFF?
If your Thermo King Commercial Food Equipment unit stops due to the AC OL Relay, but the AC Overload LED is off, check the voltage on Pin 5 C-9. If the issue persists, consider replacing the Cab Control Box.
What does it mean if the Unit operation LED is OFF when the unit is cooling in Thermo King Commercial Food Equipment?
If the unit operation LED is off while your Thermo King Commercial Food Equipment is cooling, check the voltage on Pin 7 C-9. If the LED remains off, replace the Cab Control Box.
Why is the Defrost LED OFF when the Thermo King Commercial Food Equipment is in Defrost Mode?
If the defrost LED is off when your Thermo King Commercial Food Equipment unit is in defrost mode, check for an open circuit on the yellow wire between Pin 4 C-9 and Pin 2 C-2. Also, check the voltage on Pin 8 C-9. If the LED remains off, replace the Cab Control Box.
What to do if Thermo King Commercial Food Equipment is not cooling?
If your Thermo King Commercial Food Equipment is not cooling when the box temperature is higher than the setpoint temperature, check the voltage on Pin 6 C-9. If the problem persists, replace the Cab Control Box.
What to do if there is power at compressor terminals but it does not run in Thermo King Commercial Food Equipment?
If there is power at the compressor terminals of your Thermo King Commercial Food Equipment, but it still does not run, the compressor needs to be replaced.
Describes the purpose of the guide to provide installation standards and procedures.
Explains standards are required and procedures are recommended for installation.
Provides context on regulations and limitations of the guide.
Introduces general safety, specific cautions, and first aid information.
Defines the four types of safety advisories used in the manual.
Warns against applying heat to sealed refrigeration systems.
Highlights toxic gas hazards and the necessity of PPE.
Warns about keeping clear of moving parts to prevent entanglement.
Advises caution with refrigerant vapor in confined areas due to suffocation risk.
Stresses the importance of wearing safety glasses and proper PPE.
Ensures gauge manifold hoses are in good condition before use.
Provides safety guidelines for using ladders during installation.
Warns about nitrogen holding charge and the need for eye protection.
Notes that incorrect mounting hardware can damage equipment and void warranty.
Warns about units starting automatically and vehicle auto start-stop features.
Covers hazards related to refrigerant pressure, flammability, and gases.
Details PPE and handling precautions for refrigerant oil.
Addresses hazards associated with hazardous voltage and live electrical components.
Provides correct procedures for disconnecting and reconnecting battery cables.
Advises on precautions before performing welding near electronic circuits.
Outlines procedures for working on microprocessor-based control systems.
Provides first aid measures for exposure to refrigerant, oil, electrical shock, etc.
Introduces basic mechanics and special refrigeration service tools for installation.
Defines Thermo King unit installation standards for components and vehicle integration.
Specifies requirements for cargo box size, insulation, and structural support.
Guides on where to find unit-specific installation manuals and information.
Explains the use of paper templates for accurate mounting and hole locations.
Provides guidance on unpacking and inspecting components for damage or missing parts.
Details proper procedures for drilling holes, avoiding damage to components.
Emphasizes the importance of sealing all drilled holes to prevent leaks.
Stresses the importance of using correct grade, size, and length of mounting hardware.
Introduces the two available types: nosemount and rooftop mounted units.
Details pre-installation checks and mounting procedures for nosemount condensers.
Details pre-installation checks and mounting procedures for rooftop condensers.
Covers requirements and procedures for installing the remote evaporator.
Details installation using pre-installed support plates in the cargo box ceiling.
Details installation using thru bolts and backer plates when no supports are present.
Defines Thermo King's requirements for compressor selection and installation.
Guides on selecting the correct compressor for vehicle powered units.
Explains critical compressor speed parameters for preventing premature failure.
Provides steps and formulas to calculate required compressor speeds.
Details the general procedures for installing the compressor.
Guides on the correct procedure for adding oil to the compressor.
Lists required torque specifications for compressor manifold connections.
Explains the importance and procedure for grounding the compressor.
Details checking belt alignment using a laser tool for proper operation.
Covers the removal steps for the compressor clutch assembly.
Details the procedure for properly setting the compressor clutch air gap.
Explains the installation of the temperature sensor for liquid injection systems.
Introduces standards for fabricating and installing refrigeration hoses and fittings.
Discusses determining fitting types, routing, and avoiding obstacles for hoses.
Explains the necessity of hose flexibility to prevent leaks and failures.
Shows examples of correct and incorrect hose routing and installation.
Specifies minimum bend radius requirements for various hose sizes.
Details methods for neatly routing and securing hoses to prevent damage.
Covers the need for protection against rubbing and chafing of hoses.
Introduces the three types of refrigeration fittings used on vehicle powered units.
Guides on how to identify the correct type of refrigeration fitting.
Guides on how to measure and determine the correct fitting size.
Specifies EPDM O-rings and their correct installation for sealing.
Provides torque specifications and best practices for tightening hose fittings.
Describes the suction line splice connector and its installation.
Details connections for oil return hoses to the splice connector.
Details connections for liquid injection hoses to the splice connector.
Explains P-Trap formation for oil lubrication and correct suction line routing.
Introduces the TK 2000+ system for multi-refrigerant hose assembly.
Outlines procedures for fabricating hoses using the TK 2000+ system.
Defines standards for connecting Thermo King electrical harnesses to vehicle systems.
Explains the use, application, and limitations of dielectric grease on connectors.
Covers connecting low voltage harnesses to components and the vehicle.
Details procedures for connecting Weather Pack and Deutsch sealed connectors.
Details procedures for connecting unsealed connectors, like for the HMI.
Introduces the two types of sealed splice connectors provided by Thermo King.
Provides step-by-step procedures for making heat shrink sealed butt splice connections.
Provides step-by-step procedures for making parallel crimp connections.
Details the procedure for connecting the unit's ground wire to the vehicle's battery.
Guides on connecting the unit's main power wires to the vehicle's positive battery terminal.
Details connecting the HMI controller power wire to the vehicle's ignition switch.
Warns about high voltage wiring and compliance with electrical codes.
Covers requirements for securely installing the standby receptacle box.
Illustrates wiring connections for standby power cables for different voltages.
Discusses the importance of correctly routing and securing electrical harnesses.
Details methods for securing harnesses to prevent damage from rubbing or chafing.
Guides on protecting electrical wires running through metal holes with grommets.
Advises on installing heat shields for harnesses near exhaust system heat sources.
Explains condensate drainage, drain pan, and drain hose function.
Details requirements for drain hose routing, slope, and clamp usage.
Explains drain heater function for preventing condensate freezing in cold temperatures.
Provides guidelines and warnings for installing heater resistance wires.
Provides a high-level overview of controllers and refers to diagnostic manual.
Describes the DSR II and DSR III controllers, their differences, and firmware versions.
Explains the functions of the HMI buttons and the meaning of LCD display icons.
Lists the four main menus: Main, Hour Meter, Information, and Installation.
Explains the necessity of unit-specific configuration files for DSR controllers.
Outlines the procedure for loading configuration files using WinTrac software.
Explains the critical importance of proper evacuation for system performance.
Details required evacuation points and recommended equipment for evacuation.
Illustrates the setup for 2-point evacuation using Thermo King Evacuation Station.
Illustrates the setup for 3-point evacuation using Thermo King Evacuation Station.
Illustrates the setup for 4-point evacuation using Thermo King Evacuation Station.
Details evacuation procedures specific to DSR III units with 544.xx firmware.
Explains the criticality of a leak-free system for performance and reliability.
Outlines procedures for testing the refrigeration system for leaks.
Details safety precautions and proper handling of pressurized nitrogen cylinders.
Provides steps for leak testing, purging, and dehydration using dry nitrogen.
Explains the importance of proper refrigerant charging for optimal performance.
Lists potential consequences of improper refrigerant charging.
Details the procedure for charging refrigerant through the high side port.
Details the procedure for charging refrigerant through the low side port.
Explains that SPR and CPR valves require adjustments for maximum performance.
Defines the functions of Suction Pressure Regulator (SPR) and Compressor Pressure Regulator (CPR) valves.
Explains the purpose and retention of the Commissioning Form.
Explains the purpose and retention of the Pre-Delivery Inspection (PDI) Form.
General| Brand | Thermo King |
|---|---|
| Model | VM-405 PBBD2 |
| Category | Automobile Accessories |
| Language | English |
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