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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 Steca

От Erik Zaikin
2 мин чтения

Inverter Event Messages Guide

General Issues

  • Country Code Failed

    • Description: Inconsistency between the selected country setting and the stored memory setting.
    • Action: Notify your installer.

  • Country Parameters Invalid

    • Description: Inverter cannot inject into the grid due to invalid parameters.
    • Action: Notify your installer.

  • Device Overheated

    • Description: Maximum permissible temperature exceeded despite capacity reduction.
    • Action: Check installation conditions; contact installer if frequent.

  • Data Transfer Failed

    • Description: Failed setting adoption, e.g., during commissioning.
    • Action: Repeat setting; contact installer if frequent.

  • Fan Faulty

    • Description: Internal fan defect, may result in reduced capacity operation.
    • Action: Notify your installer.

  • Grid Current DC Offset Too High

    • Description: DC current power share injected exceeds permissible value.
    • Action: Notify your installer.

Grid Issues

  • Grid Frequency Too High/Low

    • Description: Grid frequency outside permissible range.
    • Action: Contact installer if frequent.

  • Grid Islanding Detected

    • Description: No voltage in grid detected, safety shutdown.
    • Action: Contact installer if frequent.

  • Grid Relay Defective

    • Description: Detected defective grid relay.
    • Action: Notify your installer.

  • Grid Voltage Too High/Low

    • Description: Grid voltage outside permissible range.
    • Action: Contact installer if frequent.

  • Grid Voltage Too High/Low for Reactivation

    • Description: After shutdown, grid voltage outside switch-on value.
    • Action: Contact installer if frequent.

Internal Issues

  • Internal Error/Info/Warning

    • Description: Various internal issues detected.
    • Action: Contact your installer if frequent.

  • Isolation Error

    • Description: Insulating resistor below permissible value.
    • Action: Notify your installer.

  • L and N Swapped

    • Description: Outer and neutral conductors incorrectly connected.
    • Action: Notify your installer.

  • No Branding

    • Description: Incorrect or faulty device data.
    • Action: Notify your installer.

Connection and Temperature Issues

  • No Connection to the Energy Meter

    • Description: Missing or incorrect communication connection.
    • Action: Contact your installer for a check.

  • Overtemperature HSS

    • Description: Boost converter temperature exceeded permissible range.
    • Action: Check installation conditions; contact installer if frequent.

  • Power Reduction Due to Temperature

    • Description: Output power reduced due to maximum temperature reached.
    • Action: Check installation conditions; contact installer if frequent.

PV and Current Issues

  • PV Current Too High

    • Description: Input current exceeds permissible value.
    • Action: Contact your installer if frequent.

  • PV Voltage Too High

    • Description: Input voltage exceeds permissible value.
    • Action: Switch off DC load-break switch; notify your installer.

  • Reading CountryCode Failed

    • Description: Country setting could not be correctly read from memory.
    • Action: Notify your installer.

  • Residual Current Too High

    • Description: Fault current exceeds permissible value.
    • Action: Notify your installer.

Communication and Software Issues

  • RS485 Gateway Activated

    • Description: No communication possible via RS485 interface.
    • Action: Disconnect and reset inverter (AC reset); have installer perform this.

  • Software Incompatible

    • Description: Software statuses do not match after firmware update.
    • Action: Repeat firmware update with a valid file; contact installer if frequent.

  • Time/Date Lost

    • Description: Inverter lost time, affecting yield data storage and event messages.
    • Action: Correct the time settings under Settings > Time/date.

coolcept coolcept-x
3203/x 4003/x 4803x 5503x 5003 6003
stecagrid 8000 10000

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