Message
Insulation
HW Connected Fail
RCMU Fail
Relay Test Short
Relay Test Open
Bus Unbalance
HW Bus OVR
HW Bus UVR
AC Current High
HW CT A Fail
HW CT B Fail
HW CT C Fail
HW AC OCR
Inverter Failure
HW ZC Fail
DC Current High
HW FAN
Solar1 Low
Solar2 Low
52
Red
Red
Description
LED
LED
on
blinks
X
Array insulation has failed
X
AC internal wire is disconnected
X
HW RCMU failure
X
One or more relays are defective - short
X
One or more relays are defective - open
X
Bus voltage is unbalanced
X
BUS or BUS+ or BUS- voltage is over
rating
X
BUS+ or BUS- voltage is under rating
X
Phase-L1, L2, or L3 current is over rating
X
Current sensor-L1 failure
X
Current sensor-L2 failure
X
Current sensor-L3 failure
X
Output current is over hardware limit
X
Inverter Failure
X
HW zero-crossing circuit failure
X
DC1 or DC2 current is over rating
X
Fan is locked or failed during operation
X
DC1 voltage is under rating
X
DC2 voltage is under rating