Yaskawa Z1000 AC Drive HVAC - Manual (Page 223)

HOA Keypad Display Error Name
Er-02 Minor Fault
Cause Possible Solutions
An alarm was triggered during Auto-Tuning Exit the Auto-Tuning menu, check the alarm code, remove the alarm cause, and restart Auto-Tuning.
HOA Keypad Display Error Name
Er-03 OFF Button Input
Cause Possible Solutions
Auto-Tuning canceled by pressing the OFF button Auto-Tuning did not complete properly. Restart Auto-Tuning.
HOA Keypad Display Error Name
Er-04 Line-to-Line Resistance Error
Cause Possible Solutions
Motor data entered during Auto-Tuning was
incorrect
• Make sure motor data entered to T1- match motor nameplate information.
• Restart Auto-Tuning and enter the correct information.
Results from Auto-Tuning are outside the
parameter setting range or the tuning process took
too long
Check and correct faulty motor wiring.
Faulty motor cable or cable connection
HOA Keypad Display Error Name
Er-05 No-Load Current Error
Cause Possible Solutions
Motor data entered during Auto-Tuning was
incorrect
• Make sure motor data entered to T1- match motor nameplate information.
• Restart Auto-Tuning and enter the correct information.
Results from Auto-Tuning are outside the
parameter setting range or the tuning process took
too long
Check and correct faulty motor wiring.
HOA Keypad Display Error Name
Er-08 Rated Slip Error
Cause Possible Solutions
Motor data entered during Auto-Tuning was
incorrect
• Make sure motor data entered to T1- match motor nameplate information.
• Restart Auto-Tuning and enter the correct information.
Results from Auto-Tuning are outside the
parameter setting range or the tuning process took
too long
Check and correct faulty motor wiring.
HOA Keypad Display Error Name
Er-09 Acceleration Error
Cause Possible Solutions
The motor did not accelerate for the specified
acceleration time
• Increase the acceleration time (C1-01).
• Disconnect the machine from the motor if possible.
HOA Keypad Display Error Name
Er-12 Current Detection Error
Cause Possible Solutions
One of the motor phases is missing:
(U/T1, V/T2, W/T3)
Check motor wiring and correct any problems.
The current exceeded the current rating of the drive • Check motor wiring for a short between motor lines.
• Close any magnetic contactors used between motors.
• Replace the control board or the entire drive. For instructions on replacing the control board, contact
Yaskawa or your nearest sales representative.
The current is too low
Attempted Auto-Tuning without motor connected
to the drive
Connect the motor and restart Auto-Tuning.
Current detection signal error
Replace the control board or the entire drive. For instructions on replacing the control board, contact
Yaskawa or your nearest sales representative.
5.7 Auto-Tuning Fault Detection
YASKAWA ELECTRIC TOEP YAIZ1U 03A YASKAWA AC Drive – Z1000 User Manual 223
5
Troubleshooting