Delta C1000 Operation And Installation Manual page 65

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