AIMS Power High Temp Red Light – Troubleshooting &... | solardiagnostics.org

Technical Background:

The inverter is designed to protect itself from damage caused by excessive heat. When internal temperatures exceed safe operational limits, the inverter triggers a fault condition, indicated by the red light. This can be due to several factors, including inadequate ventilation, excessive current draw, or a malfunctioning temperature sensor. The inverter continuously monitors its internal temperature and can also assess ambient conditions, which are critical for efficient operation. A failure in these systems can lead to an inability to dissipate heat, causing the inverter to enter a protective state.

Symptoms:

The AIMS Power inverter-charger displays a continuous red light indicating a "High Temp" fault. Users may also notice a drop in system production as the inverter may enter a protective shutdown mode. Monitoring apps may show alerts or notifications related to overheating.

Possible Causes:

Overtemperature due to inadequate ventilation or high ambient temperature.
Excessive current draw from the inverter exceeding its rated capacity.
Faulty temperature sensor within the inverter.
Blockage or failure in the cooling fan or heat sink.
Insufficient input voltage from the solar array due to shading or poor connections.

Solution:

1

Check the system location for adequate airflow around the inverter. Ensure it is not placed in direct sunlight or enclosed spaces.
2

Measure the output current using a clamp meter to ensure it is within the inverter's specifications.
3

Inspect the inverter for any visible signs of damage or overheating, particularly around the cooling fan and heat sink.
4

Verify that the solar array is producing adequate voltage by measuring the string voltage at the junction box using a multimeter.
5

If the cooling fan is not operating, use a multimeter to check for voltage at the fan terminals. If there is no voltage, further investigate the inverter’s internal circuitry.
6

If the temperature sensor is suspected to be faulty, refer to the manufacturer’s service manual for replacement procedures or diagnostics.
7

Reset the inverter after addressing the issues to see if the fault code clears.

Safety Warning:

Always consult with a licensed electrician or certified solar installer when troubleshooting electrical issues to ensure safe handling of high-voltage components.

Prevention:

To prevent future occurrences of a "High Temp" fault, ensure that the inverter is installed in a well-ventilated area, regularly clean any dust or debris from the cooling fan and heat sink, and monitor the system’s performance to catch early signs of degradation. Regular maintenance checks can help identify potential issues before they lead to faults.

Frequently Asked Questions

•What causes the high temperature warning on my inverter?

The high temperature warning can be caused by inadequate ventilation, excessive load, or environmental conditions. Ensure the inverter is in a well-ventilated area and not overloaded.

•How can I prevent overheating in my inverter?

To prevent overheating, ensure proper airflow around the inverter and avoid placing it in direct sunlight. Regular maintenance and monitoring of load levels can also help.

AIMS Power High Temp Red Light – Troubleshooting & Technical Fix Guide

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Frequently Asked Questions

•What causes the high temperature warning on my inverter?

•How can I prevent overheating in my inverter?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention: