Delta RPI-M20A Manual

51
Solar1 High
1. Actual Solar1 voltage is over
1000Vdc
2. Detection circuit malfunction
1. Modify the solar array setting, and make the
Voc less than 1000Vdc
2. Check the detection circuit inside the inverter
Solar2 High
1. Actual Solar2 voltage is over
1000Vdc
2. Detection circuit malfunction
1. Modify the solar array setting, and make the
Voc less than 1000Vdc
2. Check the detection circuit inside the inverter
Insulation
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
Table 9-3 Warning Message
Warning
Message
Possible cause
Action
Solar1 Low
1. Actual Solar1 voltage is
under the limit
2. Some devices were
damaged inside the inverter
if the actual Solar1 voltage is
close to "0"
3. Detection circuit malfunction
1. Check the Solar1 voltage connection to the
inverter terminal
2. Check all switching devices in boost1
3. Check the detection circuit inside the inverter
Solar2 Low
1. Actual Solar2 voltage is
under the limit
2. Some devices were
damaged inside the inverter
if the actual Solar2 voltage is
close to "0"
3. Detection circuit malfunction
1. Check the Solar2 voltage connection to the
inverter terminal
2. Check all switching devices in boost2
3. Check the detection circuit inside the inverter
HW FAN
1. One or more fans are locked
2. One or more fans are
defective
3. One ore more fans are
disconnected
3. Detection circuit malfunction
1. Remove the object that stuck in the fan(s)
2. Replace the defective fan(s)
3. Check the connections of all fans
4. Check the detection circuit inside the inverter

Delta RPI-M20A Specifications

General

Brand	Delta
Model	RPI-M20A
Category	Inverter
Language	English