What to do if Thermo King Control Unit is not cooling?
If your Thermo King Control Unit isn't cooling even when the box temperature exceeds the setpoint, first check the voltage on Pin 6 of C-9. If the issue persists, consider replacing the Cab Control Box.
How to troubleshoot a blank display on Thermo King V-500 MAX-20 1PH Control Unit?
If the Thermo King Control Unit display is blank when you press the On/Off switch: 1. First, verify the voltage on Pin 3 of C-9 (or Pin 2 if the unit is in electric mode). 2. Second, check Fuse 4/1, located inside the Cab Control Box. 3. If the display remains blank, replace the Cab Control Box.
Why is the Thermo King V-500 MAX-20 1PH Control Unit Operation LED off when cooling?
If the Unit Operation LED is OFF while your Thermo King Control Unit is cooling, begin by checking the voltage on Pin 7 of C-9. If the LED remains off, the next step is to replace the Cab Control Box.
General| Brand | Thermo King |
|---|---|
| Model | V-500 MAX-20 1PH |
| Category | Control Unit |
| Language | English |
Covers general safety rules like wearing eye protection and avoiding hazards.
Precautions for refrigerant handling and first aid measures for exposure.
Risks associated with electrical systems and electronic components.
Safety measures for welding operations and high voltage circuits.
Diagnosing common issues with the in-cab control box.
Details on defrost system, timer, and termination switch.
Procedures for troubleshooting electric standby operation issues.
Procedure for charging the refrigeration system with refrigerant.
Methods for checking refrigerant charge and compressor oil levels.
Operation of High and Low Pressure Cutout Switches.
Safety guidelines for handling refrigerants and recovery procedures.
Covers handling, storage, position, precautions, and installation steps.
Includes mounting, adding oil, loss, checking, return, removal, and replacement.
Covers clutch testing, removal, inspection, installation, and run-in.
Disassembly, inspection, and reassembly of cylinder heads.
Steps to test the compressor for leaks before installation.
Troubleshooting compressor issues and temperature problems.
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