REFU Elektronik GmbH
REFUsol 48K-UL
51
8
Troubleshooting
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8.1
Self-Test Error Message
After the initialization routine, the system runs through a self-test. The individual parts of the system, such
as firmware and dataset, are checked and data is read in from the power control board. If an error continues
to be detected, possible remedial measures must be taken according to the type of error.
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8.2
Transient Failure
In certain operating states the inverter goes temporarily offline.
Unlike
restart once the error no longer exists.
A transient failure is indicated by the red LED "ERROR" on the control panel flashing and remains stored in
the fault memory even in the event of a power failure. .
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8.3
Faults
Permanently programmed and customizeable limit values are continuously monitored during ongoing
operation. In order to be protected, the inverter power section is isolated from voltage supply if a limit value
is exceeded or if a failure occurs. However, the DC and AC voltages may still be available. The corresponding
fault message appears in the display.
The fault is indicated on the control panel by the red "ERROR" LED emitting steady light.
Fault messages are stored in the fault memory, where they will remain even in the event of a power failure.
The fault memory can be called up via the display. The last 100 faults are recorded in the fault memory. The
latest fault is kept at memory location S0, the oldest at S100. A new fault is always stored to memory
location S0. When this happens, any fault already at memory location S100 will be lost.
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8.4
Fault Acknowledgement
After shutdown due to a fault, the device remains locked against reactivation until the fault is acknowledged.
It is not possible to acknowledge the fault while the cause of the fault still exists. The fault can only be
acknowledged after the cause of the fault has been eliminated.
To acknowledge the fault message, press the ESC key or turn the inverter off with the DC switch and
wait min. 30 seconds to turn the inverter ON again.
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8.5
List of Error Messages
Note
Under certain weather conditions, condensation may form in the display. This
is normal and causes no malfunction of the inverter.
