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.

We will Solve any problem with inverter

When your inverter shows persistent error codes that others can't fix, we step in. Our specialized repair techniques resolve the most challenging inverter faults - from ground isolation errors to DC injection problems. Check our comprehensive list of successfully repaired error conditions.

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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 SOLPLUS

By Erik Zaikin

2 min read

Monitoring the Inverter - Fault Guide

Fault No. 10 - Overcurrent in Hardware

Explanation: Hardware overcurrent detection.
Cause: N/A
Remedial Action: Please contact our Service department.

Fault No. 11 - Auxiliary Power Supply Operation

Explanation: Power supply of control electronics has failed.
Cause: N/A
Remedial Action: Please contact our Service department.

Fault No. 16 - Overtemperature

Explanation: The inverter is too hot.
Cause: Poor dissipation of the heat generated by the inverter.
Remedial Action: Check whether the flow of air around the heat sinks of the inverter is impeded/blocked.

Fault No. 24 - Internal, AFI Defective

Explanation: The RCCBs built into the inverter.
Cause: Hardware defect.
Remedial Action: Please contact our Service department.

Fault No. 26, 35, 37 - Fault, Internal Grid Monitoring

Explanation: Internal communication fault.
Cause: Hardware defect.
Remedial Action: Please contact our Service department.

Fault No. 27 - Auxiliary Power Supply Stdb

Explanation: Too little insolation to enable the electronics to function.
Cause: N/A
Remedial Action: Wait until the level of insolation is high enough.

Fault No. 28 - Fault, ENS/MSD Data CP

Explanation: Plausibility check on the measured values.
Cause: N/A
Remedial Action: Please contact our Service department.

Fault No. 32 - Fault, DC Symmetry

Explanation: Symmetry error of the electrolytic capacitor of the intermediate DC link.
Cause: Defective capacitor.
Remedial Action: Please contact our Service department.

Fault No. 33, 34 - Offset Error in Standby/Operation

Explanation: Offset current or voltage measurement in standby/during operation outside permissible range.
Cause: N/A
Remedial Action: Please contact our Service department.

Fault No. 38 - Fault, Relay Defective

Explanation: Grid isolating relay defective.
Cause: Hardware defect.
Remedial Action: Please contact our Service department.

Fault No. 40 - Fault, RAM-Check NOK

Explanation: RAM check on startup is not okay.
Cause: N/A
Remedial Action: Switch the inverter off and on again.

Fault No. 41 - Fault, MPP Controller

Explanation: Too low an output at too high a DC voltage.
Cause: Hardware defect.
Remedial Action: Please contact our Service department.

Fault No. 42 - Fault, External

Explanation: External fault.
Cause: A fault from an external source has been reported via the inputs of the inverter.
Remedial Action: Test the external source for faults.

Models: 25 25 50 55

We can fix your inverter