TECO E510s Series - Page 36

35
LED display Possible solutions
EF4
External Fault
(S4)
EF5
External Fault
(S5)
EF6
External Fault
(S6)
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.
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
OPR
Disconnection
 Check the keypad operator
connection
FBLSS
PID Feedback
Signal Loss
 Check if the proportion of
loss pressure (23-19) is set
correctly
 Make sure the feedback
sensor is installed correctly
and PID feedback signal
operates normally.
SC
Short circuit
 Check the motor wiring.
 Disconnect motor and try
running inverter.
run
Motor1/Motor2
Switch
Improve the control
sequence, motor can be
switched in stop.
LED display Possible solutions
LPBFT
Low Pressure
Fault

Check feedback signal is
correct and with connection.
 Check if feedback value of
pressure is lower than limit of
minimum pressure (23-15)
OPBFT
High Pressure
Fault
 Check feedback signal is
correct and with connection.
 Check if feedback value of
pressure is lower than limit of
minimum pressure (23-12)
PF
Protection Error
 Remove the digital input or
communication run
command.
TOL
External
Overload
 Check the reason of external
fault.
 Reset the digital input
terminal of external overload.
FB(flash)
PID Feedback
Loss
 Check feedback wiring.
 Replace feedabck sensor
Table 4.1.2 warning / self-diagnosis and
corrective actions
LED display
Possible solutions
OV
(flash)
Over voltage

Increase deceleration time
 Reduce input voltage to
comply with the input
voltage requirements or
install an AC line reactor to
lower the input voltage.
 Adjust speed search
parameters.
UV
(flash)
under voltage
 Check the input voltage.
 Check input wiring.
 Replace control board or
complete inverter.
OH1
Heatsink
overheat
 Install fan or AC to cool
surroundings.
 Replace cooling fan.
 Reduce carrier frequency.
 Reduce load / Measure
output current
OH3 (flash)
Motor over
Heating
warning
 Multi-function input function
set incorrectly.
 Check wiring