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Installation and Operation Manual for RPI M50A
10. Error messages and trouble shooting
EN
Message
Possible cause
Solution
HW CT A Fail
●
Test current loop is broken.
●
Check the connection of CNP4 to
CNM4.
●
CTP3 is defective.
●
Replay CTP3 with new one.
●
Detection circuit malfunction.
●
Check the detection circuit inside the
solar inverter.
HW CT B Fail
●
Test current loop is broken.
●
Check the connection of CNP4 to
CNM4.
●
CTP4 is defective.
●
Replace CTP4 with new one.
●
Detection circuit malfunction.
●
Check the detection circuit inside the
solar inverter.
HW CT C Fail
●
Test current loop is broken.
●
Check the connection of CNP4 to
CNM4.
●
CTP5 is defective.
●
Replace CTP5 with new one.
●
Detection circuit malfunction.
●
Check the detection circuit inside the
solar inverter.
HW DC Injection
●
Utility waveform is abnormal.
●
Check the utility waveform. Grid con-
nection of inverter needs to be far
away from non-linear load if neces-
sary.
●
Detection circuit malfunction.
●
Check the detection circuit inside
solar inverter.
HW DSP ADC1
HW DSP ADC2
HW DSP ADC3
● Insufficient input power.
●
Check the input voltage, must >
150 V
DC
.
●
Auxiliary power circuitry malfunction.
●
Check the auxiliary circuitry inside the
solar inverter.
●
Detection circuit malfunction.
●
Check the detection circuit inside the
solar inverter.
