OV-TEMP: Temperature protection

The "Temperature Protection" error means the inverter has activated its safety mechanism to prevent overheating.

Why it's problematic

Prolonged exposure to high temperatures can damage the inverter's internal components, leading to reduced performance or complete failure.
Overheating can also pose a fire hazard.

Possible causes

Inadequate ventilation: If the inverter is installed in a poorly ventilated area, such as a confined space or direct sunlight, it may not be able to dissipate heat effectively.
High ambient temperature: Operating in extremely hot weather conditions can push the inverter's temperature beyond its safe operating limits, even with proper ventilation.
Blocked airflow: Dust, debris, or obstructions around the inverter can restrict airflow and prevent efficient cooling.
Malfunctioning cooling fan: A faulty or failing cooling fan can hinder heat dissipation, leading to overheating.

Before you begin

Safety First: Working with electrical equipment always involves risks. Ensure you are qualified and follow appropriate safety precautions. Disconnect the inverter from both AC and DC sources before performing any physical inspection or adjustments.

Gather Information: Before starting troubleshooting, have the inverter manual on hand. You should also gather information about the inverter model and serial number, the installation date, and the PV array configuration (number of panels, capacity, and number of strings).

Troubleshooting steps

Allow the inverter to cool down: Turn off the inverter and disconnect it from both AC and DC sources. Allow it to cool down for at least 30 minutes in a well-ventilated area.
Check for proper ventilation: Ensure the inverter is installed in a location with adequate airflow and is not exposed to direct sunlight. Clear any obstructions around the inverter that might restrict airflow.
Clean the inverter's air vents and cooling fins: Use a soft brush or compressed air to remove dust, debris, or any obstructions from the inverter's air vents and cooling fins.
Inspect the cooling fan: Check the cooling fan for proper operation. If the fan is not spinning or making unusual noises, it may need to be replaced.

Verifying the solution

After the inverter has cooled down and any ventilation or cooling issues have been addressed, reconnect the inverter to both AC and DC sources and power it on. Monitor the inverter's display for the disappearance of the "Temperature Protection" error. If the temperature has stabilized within the safe operating range, the inverter should resume normal operation, indicated by the status LED lights and power generation readings on the display.

If the problem is not resolved

If the error persists after following all the above steps, there might be an internal fault within the inverter.

As a system owner: In this case, contact the inverter installer or distributor for further assistance. You can find the details of your installer in the MyAutarco app.
As a certified installer: Contact Autarco Support, you can submit a support case via Helios.