SolarEdge
UDC Range
DC Voltage Out of Range (145/146, 2x91/2x92, 3P 102/103)
DC input voltage above (UDC Max) or below (UDC Min) the operating window. Abnormal on SolarEdge since optimizers regulate string voltage.
Common causes
Optimizer not regulatingString design outside rulesNon-communicating optimizers holding safety voltage
What to check
STEP 1
Power cycle the inverter.
STEP 2
Verify string design against SolarEdge rules and check for non-communicating optimizers.
Escalate if
Persists after re-pairing
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