FAQ & ASSISTANCE

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Cas de diagnostic :

Error message Uzwk – Max

Uzwk – Max

(en) The error message Uzwk – Max indicates excessive voltage in the DC link of the inverter. The error can appear sporadically or continuously. The yellow LED flashes code 5 and the inverter may make unusual operating noises.

If the message only appears very rarely, for example in the mornings during the inverter’s start-up procedure or when disconnecting from the grid shortly after reconnection, no further action has to be taken. In this case, the next step is to continue to monitor the device.

However, if the message repeats or persists, the device must be replaced.

In this case, please contact SMA Service with the following information:

• Device type and serial number of the inverter

• If the device is in the warranty period: the warranty certificate

• LED blink code and error message

• How long has the error been present for? Is it sporadic or continuous?

All work on the inverter and the cabling of the PV array must be carried out by an electrically qualified person. SMA accepts no liability for the information and solutions given in the Online Service Center. Additional information can be found in our Online Service Center’s terms and conditions of use.


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