Error, fault and alarm codes of products - what each code means, its causes and what to do - read from the manufacturers’ manuals, with the manual page each answer comes from.
Calibration data has been lost. The manual's first action is: “This error will not auto-reset. Restore defaults in the charge controller menu (setup item 82), Disconnect the charge controller from all power-sources, w…
The CPU temperature is too high. The manual's first action is: “This error will reset after the CPU has cooled down. If the error persists, check the ambient temperature and check for obstructions near the air inlet a…
The BMS connection has been lost. The manual's first action is: “Connection to the BMS lost, check the CAN bus cabling. When the charger needs to operate in stand-alone mode again, change to setup menu setting 'BMS' f…
The controller is being paralleled to another controller with different settings or charge algorithm. The manual's first action is: “The controller is being paralleled to another controller that has different settings…
Communication warning indicates lost connection with one of the paralleled controllers. The manual's first action is: “Communication with one of the paralleled controllers was lost. To clear the warning, switch the co…
The current from the solar-panel array has exceeded 50A. The manual's first action is: “The current from the solar-panel array has exceeded 50A. This error could be generated due to an internal system fault. Disconnec…
PV over-voltage error indicates critical PV-array configuration for this charger. The manual's first action is: “This error will auto-reset after PV-voltage has dropped to safe limit. This error is an indication that …
Terminal overheated error Er 26 indicates power terminals are too hot. The manual's first action is: “Power terminals overheated, check wiring and fasten bolts if possible. This error will not auto-reset.”
Internal temperature sensor connection lost The manual's first action is: “Disconnect all power-sources from the charger, and open the front cover. Check if the white connector on the control-pcb (at the left of the L…
Internal temperature sensor short error Er 22 The manual's first action is: “The charge controller is probably faulty. This error will not auto-reset.”
The charge controller has a current sensor issue. The manual's first action is: “The charge controller is probably faulty. This error will not auto-reset.”
Maximum Bulk-time exceeded error indicates battery absorption voltage not reached after 10 hours of charging. The manual's first action is: “This error can only occur when the maximum bulk-time protection is active. T…
The controller is drawing too much current. The manual's first action is: “This error will auto-reset. Disconnect the charger controller from all power-sources, wait 3 minutes, and power up again. If the error persist…
Controller overheated despite reduced output current The manual's first action is: “This error will auto-reset after charger has cooled down. Check the ambient temperature and check for obstructions near the air inlet…
Remote temperature sensor failure The manual's first action is: “This error will not auto-reset. 1. Scroll through the LCD-screens to find the battery temperature. 2. If the LCD indicates an unrealistic temperature va…