The Thermo King alarm code 63 indicates that the diesel engine powering the refrigeration equipment’s compressor has stopped and is unable to start. The manufacturer provides the following description:
| Alarma 63 Thermo King | |
|---|---|
| Roja | Take immediate action |
| Motor Diesel stopped | If the unit shuts down, repair immediately; otherwise, report the alarm at the end of the day. |
Thermo king Code 63 Causes:
The code 63 is a troublesome code as there can be various reasons behind its occurrence. As a first recommendation, check if the fuel filters run out of fuel when this happens and rule out clogged pipes. In most cases, Alarm 63 Thermo King is generated due to fuel-related issues.
Common Causes of Engine Blockage (Code 63):
- Heat: Excessive heat in the exhaust system, engine, or ambient temperature can vaporize fuel in the lines, causing the engine to stop. The most effective way to address this issue is to let the engine cool. Find shade, park your vehicle, and let the engine rest for a few minutes.
What to do with Code 63 on the Control Panel:
- Download and inspect the ServiceWatch data log information.
- Review the data using technical user level to determine operating conditions when Code 63 was set.
- Use the service test mode in operation to replicate operating conditions as needed.
- Operating data can be viewed in technical mode.
- Perform a pre-trip test to determine the cause of the shutdown.
- Check for other alarm codes and proceed as indicated for each code.
How to Physically Address Code 63:
- Check the fuel level and verify the proper operation of the fuel pump.
- Inspect the air filter and intake hose for obstructions.
Electrical Checks to Overcome Code 63:
- Verify unit fuses.
- Check if the RPM sensor is functioning correctly.
- Review operation relay and fuel solenoid components and circuits.
- Check for low battery voltage.
- Ensure all ground connections on the master ground plate are secure.
- Check for a seized compressor or motor.
Fuel Solenoid and Code 63:
When the fuel solenoid is energized, it allows fuel to flow to the injection pump, providing the final feed to the injectors. This system acts as a cutoff system to allow system shutdown.
Thermo King Fuel Solenoid
- Check for power at the fuel cutoff solenoid with the ignition on and the engine cranking. If there’s no power, ensure to test all fuses and relays.
- Inspect the wiring of the fuel cutoff solenoid for damage.
Typical Values for Fuel Solenoid:
| Solenoide de Combustible a 12.5 voltios corriente continua. | Valores tipicos de resistencia | Valores tipicos de amperaje |
|---|---|---|
| Bobina de Puesta en Trabajo | 35 a 45 | 0.2 a 0.3 |
| Bobina de Mantenimiento | 0.5 | 24 a 29 |
Electrical Verification for Overcoming Code 63:
- Verify unit fuses.
- Check if the RPM sensor is functioning correctly.
- Review operation relay and fuel solenoid components and circuits.
- Check for low battery voltage.
- Ensure all ground connections on the master ground plate are secure.
- Check for a seized compressor or motor.
Failure and Alarm 63 Thermo King:
The starter motor is responsible for giving the initial impulse to the diesel engine so that it can develop its first revolutions.
Components of the Starter Motor:
- Pinion Gear
- Starter Motor
- Plunger
- Starter Solenoid
- Pinion Assembly
- Ring Gear
Starter Motor Operation:
- When energized, the starter motor couples to the diesel engine through the engagement solenoid.
- For the starter motor to begin turning, it must be engaged.
- If the starter solenoid is correct, engagement occurs, and the starter motor turns the diesel to start.
This coupling involves joining (meshing) the pinion assembly (5) to the ring gear (6). Once the diesel engine starts turning on its own, the solenoid disengages the coupling, disconnecting the starter motor.
Starter Motor – Thermo King
These steps should help you troubleshoot and address Thermo King Alarm Code 63 effectively. Always refer to the manufacturer’s documentation for specific details and instructions related to your equipment.