Delta C1000 - 6 Troubleshooting

Ones can check the Error Message on LCD then make simple and quick trouble
shooting according to the following table.
6 Troubleshooting
Message Possible cause Action
AC Frequency
High
HW Connect Fail
1. Actual utility frequency is over
the OFR setting
2. Incorrect country setting
3. Detection circuit malfunction
1. Check the utility frequency on the
inverter terminal
2. Check country setting
3. Check the detection circuit inside
the inverter
AC Frequency
Low
1.
Actual utility frequency is under
the UFR setting
2. Incorrect country setting
3. Detection circuit malfunction
1. Check the utility frequency on the
inverter terminal
2. Check country setting
3. Check the detection circuit inside
the inverter
Grid Quality
Non-linear load in Grid and near
to inverter
Grid connection of inverter need to be
far away from non-linear load if necessary
1. Wrong AC connection
2. Detection circuit malfunction
1. Check the AC connection based
on the manual
2. Check the detection circuit inside
the inverter
No Grid
1. AC breaker is OFF
2. No voltage on AC side
1. Switch on AC breaker
2.
Provide AC voltage to output node
of the inverter
AC Volt Low
1. Actual utility voltage is under
the UVR setting
2.
Incorrect country or Grid setting
3. Wrong AC connections
4. Detection circuit malfunction
1.
Check the utility voltage connection
to the inverter terminal
2. Check country & Grid setting
3. Check the connection in AC
4. Check the detection circuit inside
the inverter
AC Volt High
1. Actual utility voltage is over the
OVR setting
2. Utility voltage is over the Slow
OVR setting during operation
3.
Incorrect country or Grid setting
4. Detection circuit malfunction
1. Check the utility voltage on the
inverter terminal
2. Check country & Grid setting
3. Check the detection circuit inside
the inverter
Table 6-1 : Error Messages
64
Troubleshooting