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 Solar Frontier

Von Erik Zaikin

3 Min. Lesezeit

Event Message Description and Actions

Grid Frequency too low:
The grid frequency at the inverter is below the minimum allowed. The inverter automatically shuts off due to legal requirements.
Action: Frequently occurring? Contact your installer.
Grid Frequency too high:
The grid frequency at the inverter exceeds the maximum allowed. The inverter automatically shuts off due to legal requirements.
Action: Frequently occurring? Contact your installer.
Grid voltage too low:
The grid voltage at the inverter is below the minimum allowed. The inverter automatically shuts off due to legal requirements.
Action: Frequently occurring? Contact your installer.
Grid voltage too high:
The grid voltage at the inverter exceeds the maximum allowed. The inverter automatically shuts off due to legal requirements.
Action: Frequently occurring? Contact your installer.
Grid voltage too high for reactivation:
The inverter cannot start feeding again because the grid voltage exceeds the legally prescribed switch-on value.
Action: Frequently occurring? Contact your installer.
Grid voltage Ø too low:
The average output voltage over the legally prescribed period exceeds the allowed tolerance range. The inverter automatically shuts off.
Action: Frequently occurring? Contact your installer.
Grid voltage Ø too high:
The average output voltage over the legally prescribed period exceeds the allowed tolerance range. The inverter automatically shuts off.
Action: Frequently occurring? Contact your installer.
Grid current DC offset too high:
The DC current portion fed into the grid by the inverter exceeds the maximum allowed. The inverter automatically shuts off due to legal requirements.
Action: Contact your installer.
Residual Current too high:
The residual current flowing from the plus or minus inputs to earth via the photovoltaic modules exceeds the maximum allowed. The inverter automatically shuts off due to legal requirements.
Action: Contact your installer.
L and N swapped:
The live and neutral conductors are incorrectly connected. For safety, the inverter must not feed into the grid.
Action: Contact your installer.
PE not connected:
The protective earth is not connected. For safety, the inverter must not feed into the grid.
Action: Contact your installer.
Insulation error:
The insulation resistance between the plus or minus inputs and earth is below the allowed value. For safety, the inverter must not feed into the grid.
Action: Contact your installer.
Fan faulty:
The internal fan of the inverter is faulty. The inverter will feed less power into the grid in certain situations.
Action: Contact your installer.
Device overheated:
Despite derating, the maximum permissible temperature has been exceeded. The inverter feeds no power into the grid until it is no longer exceeded.
Actions:
1. Ensure installation conditions are met.
2. Contact your installer.
PV voltage too high:
The input voltage at the inverter is above the maximum allowed.
Action: Switch off the DC circuit breaker at the inverter and contact your installer.
PV current too high:
The input current at the inverter exceeds the permissible value. The inverter limits the current to the permissible value.
Action: Frequently occurring? Contact your installer.
Grid islanding detected:
There is no grid voltage present (inverter running independently). For safety, the inverter must not feed into the grid and shuts off while the error is present.
Action: Frequently occurring? Contact your installer.
Time / Date lost:
The inverter has lost the time settings due to being disconnected from the grid for too long. Yields cannot be stored, and event messages will have the wrong date.
Action: Correct the time under Settings/Time/Date.
Internal Info / Warning / Error:
If these messages occur frequently, contact your installer.
Self-test failed:
An error occurred during the self-test, and it was cancelled. Contact your installer if the self-test is cancelled due to an error several times at different times of the day and it is certain that the grid voltage and frequency were within the limits.
Faulty country setting:
An inconsistency exists between the selected country settings and those stored in memory. Contact your installer.
BCONV over-temperature:
The maximum permissible boost converter temperature has been exceeded. The inverter feeds no power into the grid until it is no longer exceeded.
Actions:
1. Ensure installation conditions are met.
2. Frequently occurring? Contact your installer.
Boost converter defective / not detected:
The boost converter is defective, and the inverter is not feeding into the grid or is feeding at reduced power. Contact your installer.

Models: PowerSets
2.0-170-1p 2.4-170-1p 3.0-165-1p 3.1-170-1p 3.6-170-1p
4.1-170-1p 4.8-170-1p 5.1-170-1p 5.9-165-1p 6.1-170-1p
7.1-170-1p 8.2-170-1p
PowerSets
3.1-170-3p 4.1-170-3p 5.1-170-3p 6.0-170-3p

We can fix your inverter