The Thermo King alarm code 14 indicates that the unit has exceeded the defrost time during the defrost cycle.
The defrost cycle is a process that melts the ice and frost that accumulates on the evaporator coil. This ice and frost can block airflow, reducing the unit’s efficiency.
The alarm 14 Thermo King can be described in the following table:
| Alarma 14 Thermo king | |
|---|---|
| Verde = OK | Defrosting completed on time |
| Report the alarm at the end of the day. |
Why does Thermo King code 14 occur?
This error typically occurs when the defrost time is excessively prolonged. In many Thermoking units, electric defrost has a time limit of 90 minutes with a power supply voltage higher than 440 VAC and 120 minutes below 440 VAC.
The electric heating signal is on for too long when:
- There is low voltage from the power source.
- Defective heating elements.
- Evaporator fans are operating during defrost.
- Evaporator sensor is incorrectly placed.
- Evaporator compartment temperature is very low, even under normal operating conditions.
What to do with code 14:
- Initiate a manual defrost and check the amperage flow and evaporator coil temperature.
- Evaluate the defrost performance.
- Open the evaporator door and verify the location of the evaporator coil sensor.
- It’s crucial to address the underlying issues causing the extended defrost time to ensure proper functionality and prevent further occurrences of alarm code 14