Delta RPI H3A

40
ERROR
Message Possible cause Action
A17:DSP
ADC I
in
/
I
boost
Fail
1. Auxiliary power circuitry
malfunction
2. Detection circuit
malfunction
1. Check the auxiliary circuitry
inside the inverter
2. Check the detection circuit
inside the inverter
A18:RED.
ADC V
grid
Fail
1. Auxiliary power circuitry
malfunction
2. Detection circuit
malfunction
1. Check the auxiliary circuitry
inside the inverter
2. Check the detection circuit
inside the inverter
A19:DSP
ADC
I
out_dc
Fail
1. Auxiliary power circuitry
malfunction
2. Detection circuit
malfunction
1. Check the auxiliary circuitry
inside the inverter
2. Check the detection circuit
inside the inverter
A20:
Efficiency
Inconsiste
nt
1. The calibration is
incorrect
2. Current feedback circuit
is defective
1. Check the accuracy of current
and power
2. Check the current feedback
circuit inside the inverter
A22: Internal
CommFau
lt_R
1. Red. CPU is idling
2. The communication
connection is
disconnected
1. Check reset and crystal in
Red. CPU
2. Check the connection
between Red. CPU and DSP
A23: Internal
CommFau
lt_D
1. DSP is idling
2. The communication
connection is
disconnected
3. The communication
circuit malfunction
1. Check reset and crystal in
DSP
2. Check the connection
between DSP and COMM
3. Check the communication
circuit