Delta RPI-H3 User Manual

FAULT
Message
A37: AC Curr
Over Rating
A42: CT Current
Sensor Fail
Detection circuit malfunction
1.Inverter choke Fail
2.Output Filter Fail
3. Detection circuit malfunction
Check the detect circuit inside the
inverter
A35: Bus Volt
Over Rating
1. Driver for boost is defective
2. Voc of PV array is over
600Vdc (RPI-H3) or
1000Vdc (RPI-H5)
3. Surge occurs during operation
4. Detection circuit malfunction
1. Check the driver circuit for boost
inside the inverter
2. Modify the solar array setting,
and make the Voc less than
600Vdc (RPI-H3) or
1000Vdc (RPI-H5)
3. N/A
4. Check the detection circuit inside
the inverter
1.
Check Inverter choke inductance.
2. Check output filter capacitance.
3.
Check the detection circuit inside
the inverter
Possible cause Action
A36:Output Curr
Transient Over
1. Surge occurs during operation
2.
Driver for inverter stage is defective
3. Switching device is defective
4. Detection circuit malfunction
1. N/A
2.
Check the driver circuit in inverter
stage
3. Check all switching devices in
inverter stage
4. Check the detect circuit inside
the inverter
A31: Bus_P Over
Volt Rating
1. Driver for boost is defective
2. Voc of PV array is over
600Vdc (RPI-H3) or
1000Vdc (RPI-H5)
3. Surge occurs during operation
4. Detection circuit malfunction
1. Check the driver circuit for boost
inside the inverter
2. Modify the solar array setting,
and make the Voc less than
600Vdc (RPI-H3) or
1000Vdc (RPI-H5)
3. N/A
4. Check the detection circuit inside
the inverter
A30:
Bus Unbalance
1.
Not totally independent or parallel
between inputs
2. PV Array short to Ground
3. Driver for boost is defective or
disconnected
4. Detection circuit malfunction
1. Check the inputs connections
2. Check the PV Array insulation
3. Check the driver circuit for boost
inside the inverter
4. Check the detection circuit inside
the inverter
A33: Bus_N Over
Volt Rating
1. Driver for boost is defective
2. Voc of PV array is over
600Vdc (RPI-H3) or
1000Vdc (RPI-H5)
3. Surge occurs during operation
4. Detection circuit malfunction
1. Check the driver circuit for boost
inside the inverter
2. Modify the solar array setting,
and make the Voc less than
600Vdc (RPI-H3) or
1000Vdc (RPI-H5)
3. N/A
4. Check the detection circuit inside
the inverter
51
Measurement, Error Message and Trouble Shooting

Delta RPI-H3 Specifications

General

Brand	Delta
Model	RPI-H3
Category	Inverter
Language	English