Delta RPI H3A

42
ERROR
Message Possible cause Action
A35: Bus Volt
Over
Rating
1. Driver for boost is
defective
2. V
oc
of PV array is
over550Vdc
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 V
oc
less
than550Vdc
3. N/A
4. Check the detection circuit
inside the inverter
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
A37: AC Curr
Over
Rating
Detection circuit
malfunction
Check the detect circuit inside
the inverter
A42: CT
Current
Sensor
Fail
1.Inverter choke Fail
2.Output Filter Fail
3. Detection circuit
malfunction
1. Check Inverter choke
inductance.
2. Check output filter
capacitance.
3. Check the detection circuit
inside the inverter
A50:Zero
Cross
Circuit Fail
The detection circuit for
synchronous signal
malfunction
Check the detection circuit for
synch
ronous signal inside the
inverter