What to do if my Thermo King V-300 MAX TC-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 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 TC-20 |
|---|---|
| Refrigerant | R-404A |
| Voltage | 12/24 V DC |
| Power Supply | DC |
| Temperature Range | -20°C to +30°C |
| Fuel Type | Diesel |
Essential safety guidelines including eye protection, clearance from moving parts, and equipment checks.
Precautions for safe handling of refrigerants and oils, with first aid instructions for exposure.
Guidelines for safely working with high and low voltage systems to prevent electrical shock.
Diagnostic steps for common issues related to the M-13, M-16, and M-17 control boxes.
Procedures for servicing and testing defrost components, timers, and switches.
Testing condenser fan switches, liquid injection systems, and electric standby circuits.
Procedures for adding and verifying the correct refrigerant charge in the system.
Guidelines for checking, adding, and draining compressor oil for system lubrication.
Testing high/low pressure switches and checking for system leaks or restrictions.
Steps for flushing the system, replacing components, and preparing for operation.
Diagnosing issues like excessive heat load, dirty coils, belt tension, and refrigerant shortages.
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