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2x10
SolarEdge
2x10
Vref Voltage Error
Reference voltage outside tolerance range
Common causes
Power supply issue
Communication error
What to check
STEP 1
Verify proper inverter clearances (top, bottom, sides)
STEP 2
Confirm heat sink fins are clean and unobstructed
Escalate if
Issue persists after clearance and cooling verification
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More SolarEdge fault codes
2xF
DC Overvoltage Error
2x11
Over Temperature
2x13
Software Error
2x18
Broken or Unconnected Temperature Sensor
18x / F-Isolation
DC Isolation Fault (Ground Leakage)