Table 6-1A: Error Codes (Field Fault) & Messages
Message Description Action
6 Error Message and Trouble Shooting
AC Freq High
(E01)
Grid frequency high
AC Freq Low
(E02)
Island
(E03,E04,E05)
AC phase
jump
(E06)
Grid frequency low
1. Check the utility frequency
2. Check Grid code & Grid setting
Islanding is detected Check Grid breaker
Phase jump of Grid voltage
If repeated occurrence, contact customer
service for technical support
Grid Quality
(E07)
Non-linear load in Grid and near
to inverter
If repeated occurrence, contact customer
service for technical support
AC phase
abnormal
(E08)
Wrong connection in AC terminal
Check the AC connection in accordance
with the user manual
No Grid
(E09)
1. AC breaker is OFF
2. Disconnect in AC terminal
1. Check switch or AC breaker turn on
2. Check the connection in AC terminal and
make sure it connects to inverter
AC Volt Low
(E10)
Grid voltage low
AC Volt High
(E11)
Grid voltage high
1. Check the utility voltage within the suitable
range
2. Check Grid code & Grid setting
3. Check the connection in AC terminal
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 it can't solve the problem, please contact customer service
for technical support.
6.1 Error Codes (Field Fault)
EPO
(E25)
EPO is operated by user Release the EPO button
DC Voltage
High
(E30)
Input voltage is over 1500Vdc
Modify the solar array setting, and make the
Voc less than 1500Vdc
Insulation
Fault
(E34)
Insulation problem of PV array
to ground
1. Check if panel enclosure ground conpletely
2. Check if inverter ground conpletely
3. Check if the DC breakers get wet
Remote OFF
(E36)
Remote OFF by extern
communication
Check if remote OFF function is active
81
Error Message and Trouble Shooting
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