Delta C1000 Operation And Installation Manual page 67

Message
1. Red. CPU is idling
HW COMM2 2. The communication connection
1. DSP is idling
2. The communication connection
HW COMM1
3. The communication circuit
1. Power cables fall off inside the
HW Connect Fail 2. Current feedback circuit is
3. Driver circuit of inverter malfunction
1. The driver circuit for the contactor
Relay Test Short
2. The contacts of contactor are
1. Driver circuit for Contactor is
Relay Test Open 2. Contactor coil is defective
3. The detection accuracy is not
1. Power BackFeed Occurred
HW Bus OVR
2. Something wrong with AC
1. Surge occurs during operation
2. Driver for inverter stage is
AC Current High
3. Switching device is defective
4. Detection circuit malfunction
1. Test current loop is broken
HW CT A Fail
2. Detection circuit malfunction
1. Test current loop is broken
HW CT B Fail
2. Detection circuit malfunction
1. Test current loop is broken
HW CT C Fail
2. Detection circuit malfunction
Possible cause
is disconnected
is disconnected
mal- function
inverter
defective
malfunction
stuck
defective
correct for Vgrid and Vout
(DC Power < AC Power)
Frequency PLL
defective
Table 6-3 : Fault Message (Continued)
1. Check the function of reset pin and
crystal in Red. CPU
2. Check the connection between
Red. CPU and DSP
1. Check the function of reset pin and
crystal in DSP
2. Check the connection between
DSP and COMM
3. Check the communication circuit
1. Check the power cables inside the
inverter
2. Check the current feedback circuit
inside the inverter
3. Check driver circuit of the inverter
1. Check the driver circuit inside the
inverter
2. Replace a new contactor
1. Check the driver circuit for contactor
2. Replace contactor coil
3. Check the Vgrid and Vout voltage
detection accuracy
1. Check the connection between
Solar Panel and Inverter
2. Check the Vgrid and Vout voltage
detection accuracy
1. N/A
2. Check the driver circuit in inverter
stage
3. Check all switching devices in
inverter stage
4. Check the detect circuit inside the
inverter
1. Check CT Sensor Wire
2. Check the detection circuit inside
the inverter
1. Check CT Sensor Wire
2. Check the detection circuit inside
the inverter
1. Check CT Sensor Wire
2. Check the detection circuit inside
the inverter
67
Troubleshooting
Action