Recommendations and Operator Obligations for PV Systems and Battery Storage

Recommendations and Operator Obligations

for PV Systems and Battery Storage

The operator of a photovoltaic system with battery storage is obliged to regularly monitor, maintain and comply with the manufacturer's specifications. The following points represent the most important recommendations and operator obligations:

1. Regular Visual Inspection (min. 1–2× per year)

The operator should regularly visually inspect the PV system, in particular:

• Condition of PV modules (soiling, leaves, snow, bird droppings, shading)
• Visual inspection of cables, connectors and mounting structure
• Check of the inverter (ventilation openings, environment free of dust and objects)
• Visual check of the meter cabinet and fuses

Any abnormalities must be reported to the installer immediately in writing.

2. Cleaning of PV Modules

PV modules are largely maintenance-free, nevertheless:

• Cleaning only in case of heavy soiling or yield loss
• No aggressive cleaning agents
• No high-pressure cleaners
• Use only soft water / demineralized water
• Cleaning ideally by a specialist company (especially for hard-to-reach roofs)

3. Operational Control via Monitoring

The operator is obliged to regularly monitor the system via the monitoring system:

• Daily and monthly production
• Error messages / warnings
• Status of battery storage
• Firmware notices from manufacturers

Irregularities must be reported in writing.

4. Maintenance and Control of the Inverter

• Ensure that the inverter is adequately ventilated
• Keep environment dust-free
• Do not place objects on or in front of the device
• Regular check whether error codes or warnings are displayed
• Firmware updates according to manufacturer specifications

The operator may not open covers himself.

5. Maintenance and Monitoring of Battery Storage

• Ensure room temperature between 5–30 °C (depending on manufacturer)
• Protect storage from moisture and dust
• No mechanical shocks or vibration
• No unauthorized interventions or mounting changes
• Regular check via monitoring app
• Report all abnormalities immediately and in writing

6. Keep Documentation

The operator must keep the following documents for possible guarantee and insurance cases:

• Commissioning protocol
• Circuit and system plans
• Manufacturer guarantee documents
• Inspection and maintenance protocols
• Ongoing error and monitoring logs

7. No Own Work – No Interventions by Third Parties

Without written approval from the installer, the following are prohibited:

• Opening devices (inverter, storage, controller)
• Rewiring, extensions, repairs
• Connection of additional consumers or generators
• Changes to parameterization

Unauthorized interventions lead to exclusion of guarantee and warranty.

8. Obligation for Proper Fault Reporting

Faults must be reported exclusively in writing and officially:

• Email: service@woltanic.de
• Website: www.woltanic.de → Ticket system

Reports via WhatsApp, private telephone numbers or social media are not valid and will not be processed (according to GTC).

9. Insurance and Safety Aspects

• Operator is obliged to inform building insurance about the PV system
• Have PV system regularly checked for storm, fire and overvoltage damage
• Regularly check overvoltage protection (by specialist company)

10. Annual Maintenance (Recommendation)

Once a year it is recommended:

• Check of all electrical connections
• Measurement of system safety (VDE-compliant)
• Check of battery storage
• Function test of inverter, data logger, meter
• Visual inspection of mounting system and DC lines

Summary – Most Important Operator Obligations

The operator is responsible for:

• regular control + monitoring
• cleanliness of modules and ventilation areas
• compliance with all manufacturer instructions
• safe operating conditions
• written and official fault reporting
• no unauthorized interventions
• maintenance and monitoring of battery storage
• documentation and keeping of all documents