6 Troubleshooting - Delta C1000 Operation And Installation Manual

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