SMA SUNNY BOY 2000HF - Page 71

SMA Solar Technology AG Messages
Installation Manual SB20HF-30HF-IA-IEN120431 71
74 < Varistor defective > • Check the varistors as described in
section 11.2"Checking the Function
of the Varistors" (page74).
75 < Fan fault >
< Clean fan >
• Check the heat dissipation as
described in section 9.2"Checking
the Heat Dissipation" (page61).
77 < Self diagnosis >
< Interference device >
• Contact the SMA Service Line (see
section 15"Contact" (page94)).
80 < Derating occurred >
The power supplied by the inverter was
reduced to below the nominal power due
to high temperature for more than
10 minutes.
If this event occurs frequently:
• Ensure sufficient ventilation.
• Check the heat dissipation as
described in section 9.2"Checking
the Heat Dissipation" (page61).
81 < Comm. disturbed >
A fault has occurred in the internal
communication of the inverter. However,
the inverter continues feeding into the grid.
If this event occurs frequently:
• Contact the SMA Service Line (see
section 15"Contact" (page94)).
90 < Inst. code invalid >
The SMA Grid Guard Code entered
(personal installer password) is invalid.
• A valid SMA Grid Guard Code has
been entered.
< Grid param. locked >
The current country data set is locked.
• Enter the valid SMA Grid Guard
Code for changing the country data
set.
< Abort self‑test > • Contact the SMA Service Line (see
section 15"Contact" (page94)).
< Changing grid param. not possible >
• The selected rotary switch setting for
the country configuration is not
programmed.
• The parameters to be changed are
protected.
< Ensure DC supply >
The DC voltage for the writing
procedure is not sufficient.
• Check the setting of the rotary switch
(see section 5.3.2"Checking the
Country Standard" (page24)).
• Enter the SMA Grid Guard Code.
• Ensure that sufficient DC voltage is
available.
Event no. Display message and cause Corrective measures