YASKAWA Z1000U Series Quick Start Manual page 64

i.6 Troubleshooting
HOA Keypad Display
EF4
EF5
EF6
EF7
EF8
Err
FAn
FbH
FbL
Fdv
GF
LF
LF2
nSE
oC
oFA00
oFA01
oFA03 to oFA06
oFA10, oFA11
oFA12 to oFA17
oFA30 to oFA43
oFb00
oFb01
oFb02
64
External Fault (input terminal S4)
External fault at multi-function input terminal S4.
External Fault (input terminal S5)
External fault at multi-function input terminal S5.
External Fault (input terminal S6)
External fault at multi-function input terminal S6.
External Fault (input terminal S7)
External fault at multi-function input terminal S7.
External Fault (input terminal S8)
External fault at multi-function input terminal S8.
EEPROM Write Error
Data cannot be written to the EEPROM
Fan fault
Fan failure
Excessive PID Feedback
PID feedback input is greater than the level set to b5-36 for longer than the time set to b5-37. Set b5-12 to 2 or 5 to enable
fault detection.
PID Feedback Loss
PID feedback loss detection is programmed to trigger a fault (b5-12 = 2 or 5) and the PID feedback level is below the
detection level set to b5-13 for longer than the time set to b5-14.
Power Supply Frequency Fault
The input power supply frequency exceeded the allowable frequency fluctuation.
Ground Fault
• A current short to ground exceeded 50% of rated current on the output side of the drive.
• Setting L8-09 to 1 enables ground fault detection.
Output Phase Loss
• Phase loss on the output side of the drive.
• Setting L8-07 to 1 or 2 enables Phase Loss Detection.
Output Current Imbalance
One or more of the phases in the output current are lost.
Node Setup Error
A terminal assigned to the node setup function closed during run.
Overcurrent
Drive sensors detected an output current greater than the specified overcurrent level.
Option Card Connection Error at Option Port CN5-A
Option compatibility error
Option Card Fault at Option Port CN5-A
Option not properly connected
Option Card Error Occurred at Option Port CN5-A
Option Card Connection Error (CN5-A)
Communication Option Card Connection Error (CN5-A)
Option Card Fault at Option Port CN5-B
Option compatibility error
Option Card Fault at Option Port CN5-B
Option not properly connected
Option Card Fault at Option Port CN5-B
Same type of option card is currently connected
Fault Name
YASKAWA ELECTRIC TOEP C710636 11E Z1000U HVAC MATRIX Drive Quick Start Guide