What to do if my Thermo King V-300 MAX-20 Refrigerator is not cooling?
If your Thermo King Refrigerator isn't cooling even when the box temperature exceeds the setpoint, first check the voltage on Pin 6 C-9. If the issue persists, consider replacing the Cab Control Box.
What to do if the Unit Operation LED is off on my Thermo King V-300 MAX-20 Refrigerator?
If the Unit Operation LED is OFF while your Thermo King Refrigerator is cooling, first check the voltage on Pin 7 C-9. If the LED remains off, replace the Cab Control Box.
General| Model | V-300 MAX-20 |
|---|---|
| Refrigerant | R404A |
| Voltage | 24V DC |
| Power Supply | DC |
| Fuel Type | Diesel |
General specifications for the refrigeration system, including compressor and oil details.
Specific technical details for the R-134A refrigeration system models.
Specific technical details for the R-404A refrigeration system models.
Specifications related to the electrical components and systems.
Troubleshooting guide for M-13 and M-16 in-cab control boxes.
Troubleshooting guide for M-17 in-cab control boxes on TC units.
Information on the defrost system's components and operation.
Procedures for handling refrigerant and checking system levels.
Guide for verifying and maintaining the compressor oil level.
Details and testing for the High Pressure Cutout Switch.
Details and testing for the Low Pressure Cutout Switch.
Step-by-step instructions for cleaning small truck units.
Procedures for servicing the compressor, including removal and installation.
Instructions for removing and installing the condenser coil.
Precautions for handling high and low voltage electrical hazards.
Procedures for testing clutch engagement and electrical parameters.
Procedures for removing and installing shaft seal components.
Methods for checking the oil level in the compressor and system.
Troubleshooting common problems like heat load, dirt, refrigerant shortage, and valve issues.
Factors that can shorten the operational life of the compressor.
Diagnosis and remedies for compressor problems in electric standby mode.
Troubleshooting unit cycling, temperature, pressure, and line issues.
Diagnostic steps for compressor operation and power supply.
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