User Manual THEIA HE-t String Inverters 357115.013, Issue 1.0, 2011 April 65
Low AC voltage (A) Too low AC voltage, the
inverter stops feeding
power
- The inverter will restart when the
voltage is within the permissible
range
- Check that the country settings
have been successfully set in Setup
> Grid Setup
- If the failure persists, contact the
system installer
High frequency on output
side (W/A)
The frequency of the
utility voltage is above the
upper limit
- The inverter tries to restart when
the frequency is within the
permissible range
- Check that the country settings
have been successfully set in Setup
> Grid Setup
- If the failure persists, contact the
system installer
Low frequency on output
side (W/A)
The frequency of the
utility voltage is below
the lower limit
- The inverter tries to restart when
the frequency is within the
permissible range
- Check that the country settings
have been successfully set in Setup
> Grid Setup
- If the failure persists, contact the
system installer
High output DC current
(W/A)
Too high proportion of
DC current in the grid
feed
- The inverter tries to restart when
the fault is cleared
- If the fault still occurs, contact
your distributor
Output current imbalance
(W)
Imbalance in the output
current between the
phases (3 phase only)
*
Grid fault, still running (W)
Fault ride-through
*
VDR fault DC side The varistors on the DC
side are damaged.
- Contact your distributor for new
parts
* Reserved for future use
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