If the Power Hub 3500 is not powered up, it probably is not connected to an active 24 VDC battery and/or there is no PV input. The LCD user interface will power up and be navigable when connected to either of these power sources.
Shade the Power Hub to reduce solar loading. FSR. If the error is only present in the history data and the unit operates normally this error can be ignored safely. Explanation: when the units power up for the very first, it does not have calibration data and an error 116 is logged. The Power Hub cannot read its configuration, and stopped.
The build-up of dirt, dust and mould is a common reason for poor system performance and will reduce the power output by 5 to 10% on average. A build-up of dirt or bird droppings on one or more panels can have an even greater effect and cause hot spots if one or more solar cells are partially covered, causing a reverse current.
This is a common concern for those unfamiliar with solar power systems, and it's important to understand how the system regulates excess energy to avoid potential hazards. The good news is that off-grid solar systems are designed to manage excess energy.
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