TECO A510s, Quick Setting Manual, Page: 53 / 111

52
LED display Possible solutions
EF2
External fault
(S2)
EF3
External fault
(S3)
EF4
External fault
(S4)
EF5
External fault
(S5)
EF6
External fault
(S6)
EF7
External fault
(S7)
EF8
External fault
(S8)
CF07
Motor control
fault

Perform rotational or
stationary auto-tune

Increase minimum output
frequency (01-08)
CF08
Motor control
fault

Increase the value of 22-
10 and 22-23 properly.

Re auto-tune (22-21)

Check if the load is too
heavy to raise torque
output limit.
FU
fuse open

Check IGBTs

Check for short circuit at
inverter output.

Replace inverter.
LED display Possible solutions
CF00
Operator
Communication
Error

Disconnect the operator
and then reconnect.

Replace the control board
CF01
Operator
Communication
Error 2

Disconnect the operator
and then reconnect.

Replace the control board
CTER
CT Failure

Check current
transformer signal and
the voltage on the control
board.
CF20
Communication
Failure

Check only use one kind
of communication type.
Protection
Failure

Remove digital input
communication run
command
External
Overload

Check external overload.

Reset external overload
of digital input.
4.3 Warning / Self-diagnosis
Detection Function
When the inverter detects a warning, the
keypad displays a warning code (flash).
Note:
The fault contact output does not
energize on a warning and the inverter
continues operation. When the warning is no
longer active the keypad will return to its
original state.
When the inverter detected a programming
error (for example two parameters contradict
each other of are set to an invalid setting), the
keypad displays a self-diagnostics code.
Note:
The fault contact output does not
energize on a self-diagnostics error. While a
self-diagnostics code is active the inverter