What to do if REFU REFUsol 17K Inverter showing overtemperature LT 1?
If your REFU Inverter displays an overtemperature LT 1 error, it indicates a cooler overtemperature (right). Check the temperature of the direct surroundings and reduce it as required.
Why REFU REFUsol 17K shows external cut-off error?
If your REFU Inverter detects an external cut-off, it means external monitoring has triggered a disconnection. Verify the external cut-off signal. Possible causes include wire breakage or a wrong sensor selection. Refer to the manual for the correct settings.
How to troubleshoot PM isolation RCD SR error on REFU Inverter?
If your REFU Inverter shows a PM isolation RCD SR error, it means the measured value of the residual currents are over the limits. Check system isolation. If you consider the system isolation to be in order, contact Service.
What causes grid frequency LT error in REFU Inverter?
If your REFU Inverter displays a grid frequency LT error, it means the power section has detected under/overfrequency. Check the frequency of the phases. If you consider the frequencies to be in order, contact the Service.
Why REFU Inverter showing overvoltage 2?
If your REFU Inverter detects overvoltage 2, the phase voltage has exceeded the limit value of the voltage average monitor for too long. Monitor line voltages and analyze the grid. If the line voltages appear to be in order, contact Service.
What to do if REFU Inverter showing overfrequency?
If your REFU Inverter is detecting an overfrequency, it means the grid frequency has exceeded the limit value. Check the frequency of the phases. If you believe the frequencies are normal, contact Service.
How to fix grid overvoltage on REFU REFUsol 17K?
If your REFU Inverter displays a grid overvoltage error, it means a phase overvoltage (AC) has been detected. Check the phase voltages using a true RMS measurement device. If the phase voltages appear normal, contact Service.
Specifies the designated purpose of the inverter and the required qualifications for personnel.
Highlights risks associated with misuse and precautions for protection against electrical hazards.
Explains DC connection procedures and describes the inverter's control panel interface.
Specifies optimal and safe locations for installing the inverter, including distance requirements.
Details the steps for physically mounting the inverter and identifies its connectors.
Explains grounding, residual current protection, and AC power connection procedures.
Details on selecting and connecting the AC power supply line, including cable length limits.
Provides instructions for connecting the PV generator strings to the inverter, including polarity.
Step-by-step process to select the country code and the required grid feed guideline.
Covers self-test routines, transient failures, fault detection, and acknowledgement procedures.
Provides a comprehensive list of error codes, their descriptions, and recommended actions.
Detailed technical specifications for various REFUsol inverter models.
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