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Error message and Trouble Shooting
6 Error message and Trouble Shooting
While Delta Electronics endeavors to build electronic products to very high
standards of reliability, there will arise instances where the inverter may not
operate properly. When such a condition is encountered, please follow the
instructions in the Troubleshooting Guide (Tables 6-1, 6-2, and 6-3) to attempt
to clear the fault.
If fault continues to appear or if it is listed more than once in the inverter Error
log, it may be necessary to call Delta Technical Service Hot Line. A service
call checklist with necessary information for a call to the hotline is provided at
the end of the Troubleshooting guide.
Delta Technical Hotline can be reached at 1-877-440-5851 or 1-626-369-8021
6.1 Error Codes
Message
1. Actual utility frequency is over
AC Freq
the OFR setting
High
2. Incorrect Grid code setting
(E01)
3. Detection circuit malfunction
1. Actual utility frequency is under
AC Freq
the UFR setting
Low
2. Incorrect Grid code or Grid setting
(E02)
3. Detection circuit malfunction
Grid Quality
Non-linear load in Grid and near
(E07)
to inverter
AC Con. Fail
1. Wrong connection in AC terminal
(E08)
2. Detection circuit malfunction
No Grid
1. AC breaker is OFF
(E09)
2. Disconnect in AC terminal
1. Actual utility voltage is under
AC Volt
the UVR setting
Low
2. Incorrect Grid code or Grid setting
(E10, E15,
3. Wrong connections in AC terminal
E20)
4. Detection circuit malfunction
1. Actual utility voltage is over the
AC Volt
OVR setting
High
2. Utility voltage is over the Slow
(E11, E13,
OVR setting during operation
3. Incorrect Grid code or Grid setting
E16, E18,
4. Detection circuit malfunction
E21, E23)
5. Wrong connection in AC terminal
Solar1
1. MPPT 1 input voltage is over
High
1000Vdc
(E30)
2. Detection circuit malfunction
Table 6-1A: Error Codes and Messages
Possible cause
1. Check the utility frequency
2. Check Grid code setting
3. Contact customer service for
technical support
1. Check the utility frequency
2. Check Grid code & Grid setting
3. Contact customer service for
technical support
Grid connection of inverter need to be
far away from non-linear load if necessary
1. Check the AC connection in accordance
with the user manual
2. Contact customer service for
technical support
1. Switch on AC breaker
2. Check the connection in AC terminal and
make sure it connects to inverter
1. Check the utility voltage within the suitable
range
2. Check Grid code & Grid setting
3. Check the connection in AC terminal
4. Contact customer service for
technical support
1. Check the utility voltage within the suitable
range
2. Check Grid code & Grid setting
3. Check the connection in AC terminal
4. Contact customer service for
technical support
1. Modify the solar array setting, and
make the Voc less than 1000Vdc
2. Contact customer service for
technical support
86
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