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BOARD REPAIR, NOT REPLACEMENT

We restore original components at micro-level, saving up to 70% compared to replacement costs — professional diagnostics right here in Casalmaggiore.

12 MONTHS FULL WARRANTY

The only service in Italy offering a complete year warranty on repaired solar inverters — your guarantee of long-lasting performance and peace of mind.

RAPID ENERGY RESTORATION

Get your inverters back online within 24-48 hours with complete testing — every day your solar system is down means lost revenue.

Photovoltaic Inverter Repair & Diagnostics

  • In-depth diagnostics of inverter failures — including internal explosions, burnt PCBs, and severe hardware faults
  • Root-cause analysis using oscilloscopes, logic analyzers, and load simulations
  • Detection and elimination of software-related faults: EEPROM corruption, firmware bugs, and error code resolution
  • Repair of MPPT modules, power stages, gate drivers, and signal path anomalies
  • Troubleshooting of grid synchronization, DC link stability, and AC waveform distortion
  • Detailed failure reports, waveform captures, and high-resolution photos of defective areas

Inverter Component Restoration & Upgrades

  • Replacement of IGBTs, MOSFETs, optocouplers, control ICs, and passive components
  • Micro-soldering and trace repair for severely damaged circuit boards
  • Custom replacement of rare or obsolete components using 3D-printed or CNC-machined parts
  • Rebuilding of cooling systems: fan units, thermal paste, and heat sink realignment
  • Reinforcement against future failures: conformal coating, transient suppression modules, and enhanced insulation paths
  • Optional firmware optimization for extended inverter lifespan and better grid behavior
  • Includes post-repair testing, load simulation, and full technical documentation with results

Advanced Inverter Diagnostics

  • Complete diagnostics using professional Fluke and Tektronix equipment
  • Electrical parameter analysis with 0.1% precision accuracy
  • Thermal imaging diagnostics to detect hidden defects
  • Insulation and grounding testing according to VDE standards
  • Detailed report with photographic documentation of all problem areas

Control Board Reprogramming

  • Factory firmware restoration for all inverter brands
  • EEPROM and Flash memory programming
  • Software adaptation for specific operating conditions
  • Firmware updates to latest versions
  • Original settings backup and recovery

PCB Board Restoration

  • Circuit trace restoration using micro-soldering techniques
  • BGA component replacement on professional rework stations
  • CPU and microchip reballing services
  • Contact pad restoration and repair
  • Protective coating application against corrosion

Final Quality Testing

  • Complete safety function verification
  • Overload condition testing
  • Calibration of all measurement circuits
  • Quality certificate with comprehensive test protocols

List of errors on the inverter Solar King

Erik Zaikin tarafından
2 dakikalık okuma

Troubleshooting Guide for Inverter Faults

System Fault

  1. Isolation Failure (Isolation Fault)

    • Description: Earth fault of the PV panels or failure of surge voltage protection.
    • Possible Causes: GFCI (Ground Fault Current Interrupter) activation indicates an isolation issue, possibly due to damaged PV panels or compromised surge protection.

  2. Ground Fault (GFCI Active)

    • Description: Ground Fault Current on ground conductor is too high.
    • Possible Causes: This fault occurs when the current flowing through the ground conductor exceeds safety thresholds, indicating a potential leakage or earth fault.

  3. Grid Failure (Grid Fault)

    • Description: Grid measured data is beyond the specification (voltage & frequency).
    • Possible Causes: This fault is triggered when grid voltage or frequency falls outside permissible limits, indicating instability or failure in the grid connection.

  4. Abnormal Grid Impedance (Impedance Fault)

    • Description:
      1. Grid impedance higher than the permissible value.
      2. Grid impedance change is higher than limit.
    • Possible Causes: High grid impedance or rapid changes in impedance can signal issues with grid stability or connectivity.

  5. No Grid Utility Voltage (No Utility)

    • Description:
      1. Inverter is not connected to the grid.
      2. Grid is absent.
    • Possible Causes: This fault occurs when there is no grid voltage detected, either due to the inverter not being properly connected to the grid or a complete grid outage.

Inverter Faults

  1. DC-Input Voltage Too High (PV Over Voltage)

    • Description: DC-Input voltage higher than the permissible 500V.
    • Possible Causes: This fault indicates that the voltage from the PV panels exceeds the inverter's maximum input voltage, potentially due to excessive sunlight or a configuration error.

  2. Consistent Failure (Consistent Fault)

    • Description: The readings of 2 microprocessors are not consistent. It is probably caused by CPU and/or other circuit not functioning well.
    • Possible Causes: A discrepancy in the readings from the inverter's microprocessors suggests a hardware malfunction, possibly in the CPU or related circuits.

  3. Bus Failure (DC Bus High / DC Bus Low)

    • Description: DC-Bus voltage too high or too low.
    • Possible Causes: This fault occurs when the DC bus voltage inside the inverter deviates significantly from the normal range, indicating issues with the inverter's power conversion process.

  4. Device Failure (Device Fault)

    • Description: The device is unable to return to normal status.
    • Possible Causes: A generic fault indicating the inverter cannot recover from an error condition, requiring further diagnostics or service.

  5. Temperature Too High (Over Temperature)

    • Description: The internal temperature is higher than the specified normal value.
    • Possible Causes: Overheating of the inverter, potentially due to inadequate ventilation, high ambient temperatures, or excessive load.

Models: SLK 1500 SLK 2000 SLK 3000 SLK 4000 SLK 6000

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