Delta M88 Series, Operation And Installation Manual

Page: 80 / 192

ERROR
Message Possible cause Action
6 Error message and Trouble Shooting
AC Freq
High
(E01)
1. Actual utility frequency is over
the OFR setting
2. Incorrect Grid Code setting
3. Detection circuit malfunction
1. Check the utility frequency
2. Check Grid Code setting
3. Contact our customer service for
technical support
AC Freq
Low
(E02)
1. Actual utility frequency is under
the UFR setting
2. Incorrect Grid Code or Grid setting
3. Detection circuit malfunction
1. Check the utility frequency
2. Check Grid Code & Grid setting
3. Contact our customer service for
technical support
Grid Quality
(E07)
Non-linear load in Grid and near
to inverter
Grid connection of inverter need to be
far away from non-linear load if necessary
AC Con.
Fail
(E08)
1. Wrong connection in AC terminal
2. Detection circuit malfunction
1. Check the AC connection in accordance
with the user manual
2. Contact our customer service for
technical support
No Grid
(E09)
1. AC breaker is OFF
2. Disconnect in AC terminal
1. Switch on AC breaker
2. Check the connection in AC terminal and
make sure it connects to inverter
AC Volt
Low
(E10, E15,
E20)
1. Actual utility voltage is under
the UVR setting
2. Incorrect Grid Code or Grid setting
3. Wrong connections in AC terminal
4. Detection circuit malfunction
1. Check the utility voltage within the suitable
range
2. Check Grid Code & Grid setting
3. Check the connection in AC terminal
4. Contact our customer service for
technical support
AC Volt
High
(E11, E13,
E16, E18,
E21, E23)
1. Actual utility voltage is over the
OVR setting
2. Utility voltage is over the Slow
OVR setting during operation
3. Incorrect Grid Code or Grid setting
4. Detection circuit malfunction
5. Wrong connection in AC terminal
1. Check the utility voltage within the suitable
range
2. Check Grid Code & Grid setting
3. Check the connection in AC terminal
4. Contact our customer service for
technical support
Solar1
High
(E30)
1. Actual Solar1 voltage is over
1000Vdc
2. Detection circuit malfunction
1. Modify the solar array setting, and
make the Voc less than 1000Vdc
2. Contact our customer service for
technical support
Solar2
High
(E31)
1. Actual Solar2 voltage is over
1000Vdc
2. Detection circuit malfunction
1. Modify the solar array setting, and
make the Voc less than 1000Vdc
2. Contact our customer service for
technical support
Insulation
(E34)
1. PV array insulation fault
2. Large PV array capacitance
between Plus to Ground or
Minus to Ground or both.
3. Detection circuit malfunction
1. Check the insulation of Solar inputs
2. Check the capacitance, dry PV panel
if necessary
3. Contact our customer service for
technical support
Table 6-1 : Error Message
80
Error message and Trouble Shooting