Delta RPI M6A User Manual

10 Error messages and trouble shooting
Installation and Operation Manual for RPI M6A M8A M10A inverters V1.0 2016-02-03
108
10.2 Warnings
Number Message Possible cause Solution
W01 Solar1 Low
DC input voltage at DC1 is below the minimum
required DC voltage.
Check the DC input voltage at DC1 on the
inverter display.
Maybe the solar irradiation is too low.
W02 Solar2 Low
DC input voltage at DC2 is below the minimum
required DC voltage.
Check the DC input voltage at DC2 on the
inverter display.
Maybe the solar irradiation is too low.
W11 HW Fan
One or more fans are blocked. Remove any objects that might block the fans.
One or more fans are defective. Replace the fans.
One or more fans are disconnected. Check the connections of all fans.
SPD Fail
Inverter was struck by a lightning. Check inverter status.
One or more SPDs (surge protection devices)
are defective.
Replace the defective SPDs.
One or more SPDs are not correctly inserted. Check all SPDs.
10.3 Faults
Number Message Possible cause Solution
F36, F37,
F38, F39,
F40, F41
AC Current High
Surge occurs during operation. Call Delta Support.
Internal failure. Call Delta Support.
F30 Bus Unbalance
Not totally independent or parallel between
inputs.
Check the input connections.
PV array short to ground. Check the PV array insulation.
Internal failure. Call Delta Support.
F60, F61,
F70, F71
DC Current High Internal failure. Call Delta Support.
F24 Ground Current
PV array insulation fault. Check the insulation of DC inputs.
Large PV array capacitance between Plus and
Ground, or Minus and Ground.
Check the capacitance, must be < 2.5 µF. Install
an external transformer if necessary.
Internal failure. Call Delta Support.
F45 HW AC OCR
Large grid harmonics. Check the grid waveform. Grid connection of
inverter needs to be far away from non-linear
loads if necessary.
Internal failure. Call Delta Support.
F31, F33,
F35
HW Bus OVR
DC input voltage is above the maximum allowed
DC input voltage.
Modify the solar array setting, so that the DC
input voltage at DC1 is below the maximum
allowed DC input voltage.
Surge occurs during operation. Call Delta Support.
Internal failure. Call Delta Support.
F23 HW COMM1 Internal failure. Call Delta Support.
F22 HW COMM2 Internal failure. Call Delta Support.
F26 HW Connect Fail Internal failure. Call Delta Support.
F42 HW CT A Fail Internal failure. Call Delta Support.
F43 HW CT B Fail Internal failure. Call Delta Support.

Delta RPI M6A Specifications

General

Brand	Delta
Model	RPI M6A
Category	Inverter
Language	English