User Manual
Control Displays and Error Descriptions
Page 17 of 22
11
Control Displays and Error Descriptions
Blue LED
Description
Steady light
Inverter in operation
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Start mode – Load adjustment
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Output overloaded
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Operating temperature too high
(automatic cooling and restart)
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Short-circuit at the inverter output
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Short-circuit in the power supply
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Overload in the power supply during the
start process
Green LED
Description
Steady light
Charging status: U
2
phase
Slow flashing
Charging status: U
1
phase
Fast flashing
Charging status: I phase
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Supply voltage (AC) too low (< 185 V)
No sine-wave voltage present
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Supply voltage (AC) too high (> 265 V)
Red LED
Description
Off
Battery voltage OK
Steady light
Battery voltage low
To prevent battery draining, the device
switches off as soon as the battery
voltage drops below 10.3 V.
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Battery voltage too high
Red and green LED
Description
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Failure of the external temperature
sensor (NTC)
If no external NTC is connected, the
signal appears for 20 s after switching
on the supply voltage (AC).