During operation, a system in Solar-Log monitoring may appear offline, show missing data or display values with a delay. These situations often cause uncertainty, even though the photovoltaic system is technically working correctly. This article explains common issues, puts them into context and shows when waiting is appropriate and when a technical check is necessary.
For an overview, see Solar-Log Monitoring: Features, Login & Data Overview.
System is shown as offline
If a system is displayed as offline, it usually means there is currently no active connection between the data logger and the portal.
Possible causes:
- interrupted internet connection
- router restart
- local network issues
- maintenance work
Offline status does not automatically mean the system is not producing electricity.
No or incomplete data
A common issue is an empty or only partially updated dashboard.
Typical reasons:
- synchronization delays
- missing or incorrectly configured measurement hardware
- data logger not reachable
- setup not fully completed
If data is missing for several days, the system configuration should be checked.
Data is displayed with a delay
Solar-Log does not provide guaranteed real-time data.
Typical characteristics:
- delays of several minutes
- data gaps after offline periods
- daily values that are only complete at the end of the day
For reliable analysis, completed time periods should be used.
Differences between views
Different views or access points may display different values.
Possible causes:
- different update intervals
- visualization differences
- limited user permissions
In many cases, these differences are system-related.
Storage values missing or fluctuating
In systems with battery storage, values may fluctuate significantly or may not be displayed temporarily.
Possible causes:
- internal energy management
- communication delays
- fluctuating consumption
These effects are technically normal.
When waiting is reasonable
Not every irregularity indicates a problem.
Waiting is reasonable in cases of:
- short-term offline status
- missing data for a few hours
- minor delays
- scheduled maintenance
In many cases, the system stabilizes automatically.
When to contact the installer
A technical check is recommended in the following cases:
- persistent offline status over several days
- completely missing data
- recurring error messages
- newly installed or expanded systems
The installer can check connection, data logger and system configuration.
Frequently asked questions about Solar-Log problems (FAQ)
Does offline mean my system is not producing electricity?
No. It only refers to the connection to the monitoring system.
Why is data missing?
Often due to synchronization issues or temporary internet interruptions.
Are delays normal?
Yes. Monitoring systems usually work with delayed data transmission.
Why do I see different values?
Differences are caused by update intervals or different visualizations.
Can I fix this myself?
Often checking the internet connection or restarting access helps. For persistent issues, contact the installer.
Why don’t I see consumption data in Solar-Log?
Consumption data may be missing in Solar-Log if no suitable meter or measurement device is installed. In many PV systems, the inverter can provide production data, but not complete household or building consumption data. Consumption values require additional measurement hardware, such as an energy meter or smart meter. The exact availability depends on the Solar-Log configuration and the connected devices.
