Warning Codes - Delta M42U Operation And Installation Manual

Message
Solar2 1. MPPT 2 input voltage is over
High 1000Vdc
(E31) 2. Detection circuit malfunction
1. PV array insulation fault
2. Large PV array capacitance
Insulation
between Plus to Ground or
(E34)
Minus to Ground or both.
3. Detection circuit malfunction

6.2 Warning Codes

Message
1. MPPT 1 input voltage is under
the limit
Solar1
2. Some devices were damaged
Low
inside the inverter if the actual
(W01)
MPPT 1 voltage is close to "0"
3. Detection circuit malfunction
1. MPPT2 input voltage is under
the limit
Solar2
2. Some devices were damaged
Low
inside the inverter if the actual
(W02)
MPPT 2 voltage is close to "0"
3. Detection circuit malfunction
1. One or more fans are locked
Ext Fan Fail
2. One or more fans are defective
Int Fan Fail
3. One ore more fans are
disconnected
(W11)
4. Detection circuit malfunction
1. Inverter was struck by lightning
2. One or more SPD are defective
AC Surge
3. One or more SPD are
disconnected
DC Surge
4. Detection circuit malfunction
5. Wrong connection in AC terminal
Table 6-1B: Error Codes and Messages
Possible cause
Table 6-2A: Warning Codes and Messages
Possible cause
Error message and Trouble Shooting
1. Modify the solar array setting, and
make the Voc less than 1000Vdc
2. Contact customer service for
technical support
1. Check the insulation of Solar inputs
2. Check the capacitance, dry PV panel
if necessary
3. Contact customer service for
technical support
1. Check the MPPT 1 voltage connection
to the inverter terminal
2. Check all switching devices in boost1
3. Contact customer service for
technical support
1. Check the MPPT 2 input voltage
connection at the inverter terminal
2. Check all switching devices in boost2
3. Contact customer service for
technical support
Ext Fan Fail
1. Remove the object that stuck in the fan(s)
2. Replace the defective fan(s)
3. Check the connections of all fans
4. Contact customer service for
technical support
Int Fan Fail
Contact customer service for technical
support
1. Check inverter's status
2. Replace the defective SPD
3. Check the connections of SPDs
4. Check the connection in AC terminal
5. Contact customer service for
technical support
87
Action
Action