Faultpath
/
Fault Codes
/
Solis
/
BoostFal
Solis
BoostFal
DC Boost Circuit Fault (Alarm 1020)
Boost converter circuit fault.
Common causes
Internal hardware fault
What to check
STEP 1
Restart the inverter.
Escalate if
Persists, hardware fault
Need full interactive diagnosis?
Faultpath walks you through decision trees, fault codes, and commissioning — built for solar & battery engineers.
Open Faultpath
More Solis fault codes
E001
Grid Over-Voltage
E002
Grid Under-Voltage
E003
Grid Over-Frequency
E004
Grid Under-Frequency
E005
Grid Impedance High