Delta RPI-H3 User Manual

ERROR
Message
E28: Slow Under
Voltage Range
E30: DC Volt
Over Rating
E32: L/N Reversed
(RPI-H5 only)
1. Actual utility voltage is under
the UVR setting
2. Incorrect country or Grid setting
3. Detection circuit malfunction
1. Actual Solar1 voltage is over
600Vdc (RPI-H3) or
1000Vdc (RPI-H5)
2. Detection circuit malfunction
1. Incorrect AC wiring
2. Incorrect AC connection setting
1. Check the utility voltage on the
inverter terminal
2. Check country & Grid setting
3.
Check the detection circuit inside
the inverter
1. Modify the solar array setting,
and make the Voc less than
600Vdc (RPI-H3) or
1000Vdc (RPI-H5)
2. Check the detection circuit inside
the inverter
1. Check if brown wire is connected
to Line and blue wire is connected
to Neutral.
2. Check display “AC configurat.”
setting.
Possible cause Action
E27:Slow Under
Frequency Range
1. Actual utility frequency is under
the UFR setting
2. Incorrect country or Grid setting
3. Detection circuit malfunction
1. Check the utility frequency on
the inverter terminal
2. Check country & Grid setting
3. Check the detection circuit inside
the inverter
48
Measurement, Error Message and Trouble Shooting

Delta RPI-H3 Specifications

General

Brand	Delta
Model	RPI-H3
Category	Inverter
Language	English