What should I do if my SolaX Power Inverter displays 'BMS communication failure'?
- AAnthony VargasSep 23, 2025
If your SolaX Power Inverter displays 'BMS communication failure', check whether the communication between battery and inverter is normal.

What should I do if my SolaX Power Inverter displays 'BMS communication failure'?
If your SolaX Power Inverter displays 'BMS communication failure', check whether the communication between battery and inverter is normal.
What should I do if my SolaX Power X1-Hybrid-5.0-LV Inverter displays 'CT fault'?
If your SolaX Power Inverter displays 'CT fault', wait for a while to see if it returns to normal. Check whether CT works properly.
What should I do if my SolaX Power X1-Hybrid-5.0-LV displays 'External fan failure.'?
If your SolaX Power Inverter displays 'External fan failure', please check if the external fan is damaged or blocked.
What should I do if my SolaX Power X1-Hybrid-5.0-LV Inverter displays 'The grid voltage exceeds the allowable value 1'?
If your SolaX Power Inverter displays 'The grid voltage exceeds the allowable value 1', check whether the grid voltage is within the normal working range.
What should I do if my SolaX Power X1-Hybrid-5.0-LV Inverter displays 'Arc fault'?
If your SolaX Power Inverter is showing an 'Arc fault' message, wait for a while and observe if it returns to normal operation.
What to do if my SolaX Power X1-Hybrid-5.0-LV Inverter displays 'PV connection configuration error'?
If your SolaX Power Inverter shows a 'PV connection configuration error', turn off the PV, battery, and power grid. Then, restart the inverter and confirm whether the PV connection is correct.
What should I check if my SolaX Power Inverter displays 'Battery voltage is too high'?
If your SolaX Power Inverter displays 'Battery voltage is too high', check whether the battery output voltage is within the normal range.
What to do if SolaX Power Inverter displays 'Frequency configuration mismatch'?
If your SolaX Power Inverter shows a 'Frequency configuration mismatch', check whether the frequency is within the correct range.
What to do if SolaX Power X1-Hybrid-5.0-LV displays 'PV1 reverse connection'?
If your SolaX Power Inverter indicates 'PV1 reverse connection', turn off the PV, battery, and power grid, restart the inverter, and check the connection status of the positive and negative poles of PV1.
What to do if SolaX Power X1-Hybrid-5.0-LV Inverter displays 'PV2 reverse connection'?
If your SolaX Power Inverter indicates 'PV2 reverse connection', turn off the PV, battery, and power grid, restart the inverter, and check the connection status of the positive and negative poles of PV2.
| Max Efficiency | 97.6% |
|---|---|
| Battery Voltage | 48 V |
| Start Voltage | 120V |
| MPPT Voltage Range | 120 V - 550 V |
| Number of MPPTs | 2 |
| Nominal Output Voltage | 230 V |
| Rated AC Voltage | 230 V |
| AC Voltage Range | 180-280V |
| MPPT Range | 120 V - 550 V |
| Max. DC Input Current per MPPT | 11 A |
| Protection Degree | IP65 |
| Rated Power | 5000W |
| Battery Compatibility | Lithium-ion battery |
| Max. Discharging Power | 5000W |
| Max. DC Input Power | 6500W |
| Max. Output Power | 5000VA |
| AC Output Power | 5000W |
| Max. AC Output Power | 5000VA |
| AC Frequency | 50/60 Hz |
| Max. DC Input Power (Alternative) | 6500W |
| Operating Temperature Range | -25°C to 60°C |
| Cooling Method | Natural Convection |
| Communication | RS485, Ethernet, WiFi |
| Max. Charging Power | 5000W |
Covers critical safety warnings regarding high voltages, hot surfaces, radiation, grounding, and electric shock.
Details the necessity and types of surge protection for PV systems.
Explains the role of RCM, trip thresholds, and RCD Type B recommendations.
Provides guidelines for pairing the inverter with high voltage batteries.
Details essential precautions for safe and effective inverter installation.
Step-by-step instructions for physically mounting the inverter onto its bracket.
Details how to connect photovoltaic panels to the inverter's inputs.
Explains connections to the grid, generator, and EPS output.
Specifies power and operational requirements for loads connected to the EPS output.
Provides step-by-step instructions for wiring Grid, GEN, and EPS cables.
Guides on connecting the battery system to the inverter.
Outlines prerequisites and safety measures for battery connection.
Step-by-step procedure for connecting battery cables.
Covers various communication port definitions and connections.
Identifies and describes the function of each communication port.
Explains how to connect current sensors (CT) and electric meters.
Details connections for BMS, DRM, and COM ports.
Specifies pinouts and connection for the Battery Management System (BMS) port.
Explains the COM port's use for monitoring and external equipment control.
Describes how to connect multiple inverters in parallel.
Shows the setup for connecting up to 10 inverters in parallel.
Explains the critical steps for performing a proper ground connection.
Detailed procedure for connecting the ground wire for safety.
Describes how to connect monitoring accessories like WiFi, LAN, and 4G dongles.
A checklist of pre-operation checks before starting the inverter.
Instructions on how to safely start and operate the inverter.
Detailed steps for powering on and initiating the inverter's operation.
Lists specific faults, their diagnoses, and suggested solutions for various error types.











