Delta M50A 260, Operation And Installation Manual, Page: 73 / 88

Table 6-1A: Error Codes (Field Fault) and Messages
Message Description Action
6 Error Message and Trouble Shooting
AC Freq
High
(E01)
Grid frequency high
1. Check the utility frequency
2. Check Grid code setting
AC Freq
Low
(E02)
Grid frequency low
1. Check the utility frequency
2. Check Grid code & Grid setting
3. Check the connection in AC terminal
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
1. Check the utility voltage within the suitable
range
2. Check Grid code & Grid setting
3. Check the connection in AC terminal
AC Volt
High
(E11, E13,
E16, E18,
E21, E23)
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)
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
DC Voltage
High
(E30)
Input voltage is over 1000Vdc
Modify the solar array setting, and make the
Voc less than 1000Vdc
73
Error Message and Trouble Shooting