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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 it can't solve the problem, please contact customer service
for technical support.
6.1 Error Codes (Field Fault)
Message
AC Freq
High
Grid frequency high
(E01)
AC Freq
Low
Grid frequency low
(E02)
Grid Quality
Non-linear load in Grid and near
(E07)
to inverter
AC phase
abnormal
Wrong connection in AC terminal
(E08)
No Grid
1. AC breaker is OFF
(E09)
2. Disconnect in AC terminal
AC Volt
Low
Grid voltage low
(E10)
AC Volt
High
(E11, E13,
Grid voltage high
E16, E18,
E21, E23)
DC Voltage
High
Input voltage is over 1000Vdc
(E30)
Insulation
Insulation problem of PV array
Fault
to ground
(E34)
Table 6-1A: Error Codes (Field Fault) and Messages
Description
Error Message and Trouble Shooting
1. Check the utility frequency
2. Check Grid code setting
1. Check the utility frequency
2. Check Grid code & Grid setting
If repeated occurrence, contact customer
service for technical support
Check the AC connection in accordance
with the user manual
1. Check switch or AC breaker turn on
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
1. Check the utility voltage within the suitable
range
2. Check Grid code & Grid setting
3. Check the connection in AC terminal
Modify the solar array setting, and make the
Voc less than 1000Vdc
1. Check if panel enclosure ground conpletely
2. Check if inverter ground conpletely
3. Check if the DC breakers get wet
73
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