Protect0110
(BUS over voltage
(firmware))
1. Restart inverter by turning both AC and DC
switches OFF. Wait for 1 minute for all
energy to discharge and turn both switches
ON
2. If inverter cannot clear fault, replace inverter
Protect0100
(The sensor fault of
leakage current)
1. Restart inverter by turning both AC and DC
switches OFF. Wait for 1 minute for all
energy to discharge and turn both switches
ON
2. If inverter cannot clear fault, contact CPS
Service to replace filter board or inverter.
PVxReverse
(PVx input reverse
connection x=1,2,3)
1. Turn DC Switch OFF
2. Open Fuse holders to isolate PV strings
3. Use meter to find out which PV string is
connected in reverse polarity
4. Correct PV string connection
PVx Over current
(PVx Over current
x=1,2,3)
1. Check PV input Current
2. Restart inverter by turning both AC and DC
switches OFF. Wait for 1 minute for all
energy to discharge and turn both switches
ON
3. If inverter cannot clear fault, replace inverter
PV2VoltOver (PVx
Over Volt x=1,2,3)
1. Measure voltage at DC terminals in wiring
box and compare with reading in
“Measurement Data” menu. PV voltage must
be less than 1000V in open circuit condition
2. If display reading is not within 2% of
meter reading, replace inverter
3. If display reading is within 2% of meter
reading, adjust number of panels in the
string.
Table 7-6 LCD Troubleshooting PROTECTION (cont.)
Fault Description / Instruction
Protect0230
(Inverter open-loop
self-test fault)
1. Restart inverter by turning both AC and DC
switches OFF. Wait for 1 minute for all
energy to discharge and turn both switches
ON
2. If inverter cannot clear fault, replace inverter
1. Check logic connector to Arc board is secure.
2. Run Arc Fault Test from “Settings” Menu
3. If Alarm re-occurs, contact CPS Service to
replace arc board or wiring box
1. Check logic connector to Arc board is secure.
2. Run Arc Fault Test from “Settings” Menu
3. If Alarm re-occurs, contact CPS Service to
replace arc board or wiring box
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