Delta C1000 - Page 65

Message Possible cause Action
Solar1 Low
DC Surge
1. Actual
2. Detection circuit of input voltage
malfunction
1. N/A
2. Check the detection circuit inside
the inverter
HW FAN
1.
One or more fans are locked
2. One or more fans are defective
3. One or more fans are disconnected
4. Detection circuit malfunction
1. Remove the object that stuck in
the fan(s)
2. Replace the defective fan(s)
3. Check the connections of all fans
4. Check the detection circuit inside
the inverter
EPO EPO button is activated
1. Release the EPO (Release with N.C )
2. Check the connection of EPO
SPD on DC Side damaged
1. Contact the signal wire connection
of DC SPD
2. Check the DC SPD if damaged
PID Relay Fail
PID Relay detection circuit
malfunction
Check the detection circuit inside
inverter
PID OCR
The impedance between negative
DC bus terminal (DC-) to Protective
Earth terminal（PE） is too low
Check the circuit between negative
DC Bus terminal (DC-) to Protective
Earth terminal（PE）
AC Surge SPD on AC Side damaged
1. Contact the signal wire connection
of AC SPD
2. Check the AC SPD if damaged
DC Aux - Power
Fail
1. DC Aux-Power offer incorrect
output voltage
2.
Detection circuit of DC Auxpower
malfunction
1. Check the connection between
Inverter and DC side
2. Check the detection circuit
Message Possible cause Action
Solar1 High
1. Actual PV array voltage is over
1000Vdc
2. Detection circuit malfunction
1. Modify the PV array setting, and
make the Voc less than 1000Vdc
2. Check the detection circuit inside
the inverter
Insulation
1. PV array insulation resistance
setting is different from display
setting
2.
Large PV array capacitance due
to moist PV array, it will affect
accuracy of measurement.
3. Detection circuit malfunction
1. Check display setting
2. Dry PV panel if necessary
3. Check the detection circuit inside
the inverter
Table 6-1 : Error Messages (Continued)
Table 6-2 : Warning Message
65
Troubleshooting