Delta RPI-H3, Руководство по эксплуатации и установке

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FAULT
Message
A20: Efficiency
Inconsistent
A22: Internal
Comm Fault_R
A23: Internal
Comm Fault_D
A24: Residual
Curr Over Rating
1. The calibration is incorrect
2. Current feedback circuit is defective
1. Red. CPU is idling
2. The communication connection
is disconnected
1. DSP is idling
2. The communication connection
is disconnected
3. The communication circuit
malfunction
1. PV array insulation fault
2. Large PV array capacitance
between Plus to Ground or Minus
to Ground
3. Either side of boost driver or
boost choke malfunction
4. Detection circuit malfunction
1. Check the accuracy of current
and power
2. Check the current feedback circuit
inside the inverter
1. Check reset and crystal in
Red. CPU
2. Check the connection between
Red. CPU and DSP
1. Check reset and crystal in DSP
2. Check the connection between
DSP and COMM
3. Check the communication circuit
1. Check the insulation of Solar inputs
2. Check the capacitance
(+ <-> GND & - <-> GND),
must < 2.5uF. Install an external
transformer if necessary
3. Check boost driver & boost choke
4. Check the detection circuit inside
the inverter
A25: Ground Fault
1. PV array insulation fault
2. Large PV array capacitance
between Plus to Ground or Minus
to Ground or both.
3. Detection circuit malfunction
1. Check the insulation of Solar inputs
2. Check the capacitance, dry PV
panel if necessary
3. Check the detection circuit inside
the inverter
A27: RCMU
Circuit Fail
1. RCMU is disconnected
2. Detection circuit malfunction
1. Check the RCMU connection
inside the inverter
2. Check the detection circuit inside
the inverter
A28: Relay Short
1. One or more relays are sticking
2. The driver circuit for the relay
malfunction
1. Replace the defective relay(s)
2. Check the driver circuit inside
the inverter
A29: Relay Open
1. One or more relays are abnormal
2. The driver circuit for the relay
malfunction
3. The detection accuracy is not
correct for Vgrid and Vout
1. Replace the defective relay(s)
2. Check the driver circuit inside
the inverter
3. Check the Vgrid and Vout voltage
detection accuracy
Possible cause Action
50
Measurement, Error Message and Trouble Shooting