5-11
LED display Description Cause Possible solutions
EF5 ( flash )
External fault
(S5)
External fault (Terminal
S5) Active when 03-04=
25, and Inverter external
fault selection 08-24=2.
EF6 ( flash )
External fault
(S6)
External fault (Terminal
S6) Active when 03-05=
25, and Inverter external
fault selection 08-24=2.
PI setting
error
Inverter PI setting error
Inverter pulse input selection
(03-30) selection conflicts with
PID source (10-00 and 10-01).
Check pulse input selection
(03-30) and PID source
(10-00 and 10-01).
FB (flash)
PID feedback
breaking
PID feedback signal falls
below level specified in
10-12 (PID feedback loss
detection level) for the
time specified in 10-13
(Feedback loss detection
time). Active when
parameter (10-11 = 1).
Feedback signal wire broken
Feedback sensor broken.
Check feedback wiring
Replace feedback sensor.
Fire mode
enabled
Fire mode enabled Fire mode enabled.
Check the environment and
confirm the fire status. If no
fire, turn off the power and
power on again.
Parameter
setting Error
Parameter setting error The parameter setting is wrong
Please refer to the manual for
correct setting
Direct start
warning
The inverter can’t start
directly, due to 07-04=1
Run command from the terminal
is enabled and 07-04=1
Remove the run command
from the terminal first, and
enabled later.
External
Terminal
Stop Error
External Terminal is main
run command source
selection (00-02=1) and
run command executes
but executes stop
command from keypad.
Run command executes from
external terminal but executes
stop command from keypad.
Remove the run command
from external terminal
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