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TABLE 18
DIRECT DRIVE BLOWER MOTOR TROUBLESHOOTING
Error Warning Reason Troubleshoot
Locked Rotor o
No changes in hall signals within
Check for obstruction keeping impeller from rotating
Braking Mode o
o
Combination of 3 hall signals gives
false signal after one rotation
Power Module Overheated o
o
C
secure electrical connections
Motor Overheated o
Motor over-temperature protector
opens
Gate Driver Error o Internal software fault
o Input voltage has phase imbalance
DC Link Voltage Low o
DC Link Over-voltage o
Line Over-voltage o Line voltage too high
Line Under-voltage
o
Line voltage too low
Communication Error
Internal communication failure. Not
connected with master/slave wiring
Check low voltage wiring connections
DC Link Voltage Low o
code
o
o
C
secure electrical connections
o
o
C
o
o
C
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