Learn how to troubleshoot the Growatt 120 HCT sensor error effectively with this guide.
Common causes include wiring issues, sensor malfunctions, or firmware problems. Inspect connections and update firmware if necessary.
To reset, turn off the inverter, wait for a few minutes, and then turn it back on. This can clear temporary faults.
The Growatt 120 HCT utilizes temperature sensors to monitor its operational environment. If the inverter detects anomalies in the sensor readings, it triggers a fault to protect itself from potential damage. This can occur due to incorrect resistance measurements indicating a short circuit or open circuit in the sensor circuit. Additionally, if the inverter's internal logic detects excessive temperatures beyond its operational limits, it may misinterpret this as a sensor error, leading to an automatic shutdown to prevent overheating.
Users may observe an LED indicator on the Growatt 120 HCT flashing in a specific pattern, often accompanied by alerts in the monitoring app indicating a sensor error. System performance may drop significantly, with reduced power output from the array, and the inverter may enter a protective shutdown mode.
Always ensure that any troubleshooting or repair work is conducted by a licensed electrician or certified solar installer to prevent electrical hazards and ensure compliance with local codes.
To avoid sensor errors in the future, regularly inspect the inverter for signs of wear and tear, ensure that all wiring connections are secure and protected from environmental factors, and maintain proper ventilation around the unit. Scheduling routine maintenance with a certified solar installer can help identify potential issues before they lead to system faults.