108
Measurements and Messages
Message Red LED
on
Red
LED
blinks
Description
Relay Test Open
X
One or more relays are defective - open
Bus Unbalance
X
Bus voltage is unbalanced
HW Bus OVR
X
BUS or BUS+ or BUS- voltage is over
rating
HW Bus UVR
X
BUS+ or BUS- voltage is under rating
AC Current High
X
Phase-L1, L2, or L3 current is over rating
HW CT A Fail
X
Current sensor-L1 failure
HW CT B Fail
X
Current sensor-L2 failure
HW CT C Fail
X
Current sensor-L3 failure
HW AC OCR
X
Output current is over hardware limit
Inverter Failure
X
Inverter Failure
HW ZC Fail
X
HW zero-crossing circuit failure
DC Current High
X
DC1 or DC2 current is over rating
Warnings
HW FAN
X
Fan is locked or failed during operation
Solar1 Low
X
DC1 voltage is under rating
Solar2 Low
X
DC2 voltage is under rating
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