Delta RPI M30A_120 Operation And Installation Manual page 66

Error message and Trouble Shooting
Message
1. Insufficient input power
HW DSP
2. Auxiliary power circuitry
ADC2
malfunction
(F16)
3. Detection circuit malfunction
1. Insufficient input power
HW DSP
2. Auxiliary power circuitry
ADC3
malfunction
(F17)
3. Detection circuit malfunction
1. Insufficient input power
HW Red
2. Auxiliary power circuitry
ADC1
malfunction
(F18)
3. Detection circuit malfunction
1. Insufficient input power
HW Red
2. Auxiliary power circuitry
ADC2
malfunction
(F19)
3. Detection circuit malfunction
1. The calibration is incorrect
HW Eff.
2. Current feedback circuit is
(F20)
defective
1. DSP is idling
HW 2. The communication
COMM1 connection is disconnected
(F23) 3. The communication circuit
malfunction
HW 1. Red. CPU is idling
COMM2 2. The communication
(F22) connection is disconnected
1. PV array insulation fault
2. Large PV array capacitance
between Plus to Ground or
Ground Cur.
Minus to Ground
(F24)
3. Either side of boost driver
or boost choke malfunction
4. Detection circuit malfunction
Possible cause
FAULT
1. Check the input voltage, must >150Vdc
2. Check the auxiliary circuitry inside the
inverter
3. Check the detection circuit inside the
inverter
1. Check the input voltage, must >150Vdc
2. Check the auxiliary circuitry inside the
inverter
3. Check the detection circuit inside the
inverter
1. Check the input voltage, must >150Vdc
2. Check the auxiliary circuitry inside the
inverter
3. Check the detection circuit inside the
inverter
1. Check the input voltage, must >150Vdc
2. Check the auxiliary circuitry inside the
inverter
3. Check the detection circuit inside the
inverter
1. Check the accuracy of current and power
2. Check the current feedback circuit
inside the inverter
1. Check reset and crystal in DSP
2. Check the connection between DSP
and COMM
3. Check the communication circuit
1. Check reset and crystal in Red. CPU
2. Check the connection between Red.
CPU and DSP
1. Check the insulation of Solar inputs
2. Check the capacitance (+ <-> GND &
- <-> GND), must < 2.5uF. Install a
external transformer if necessary
3. Check boost driver & boost choke
4. Check the detection circuit inside the
inverter
66
Action