RS−P Solar Water Pump Controller User Manual
26
Appendix I
．
Fault and Fault Information List
No.
Failure
code
Failure
description
Potential causes
Solutions
overload
protection
Motor rotation is blocked or load mutation
occurs
Prevent the motor rotation from blocking
and reduce the load mutation
Common motor maintains running under
heavy load for a long period of time
Replace the common motor with variable
frequency motor or improve the running
frequency
Motor overload protection time is set too
small
Increase the motor overload protection
time
Too big V/F curve ratio
Adjust V/F curve setting and torque
increment
DC braking current is set too high
Reduce the DC brake current
15
E.oUt
Peripheral
protection
External failure terminal enable
Check the external failure terminal status
Stall over voltage or over current and the
time lasts for more than one minute
Check whether the external load is normal
16
E.CUr
Current
detection fault
Current detection circuit failure
Seek for technical support
17
E.GdF
Output to
ground short
circuit
Wrong connection
Correct the connection error as per the
user
’
s manual
Motor failure
Replace the motor after performing
ground insulation test
Invert module failure
Seek for technical support
Too big ground-leakage current at the
controller output side
Seek for technical support
18
E.LV1
Abnormal
power failure
during running
Mains power fluctuation or momentary
power failure
Check the local mains power
19
E.ILF
Input power
failure
Abnormal connection, missing connection
or disconnection at the power terminal of
the controller
Check the power connections as per the
operational regulations and eliminate the
errors of missing connection and
disconnection
Serious imbalance of input power at three
phases
Check whether the imbalance of input
power at three phases comply with the
requirements
Burning of capacitor of the controller
Seek for technical support
The power-on buffer circuit of the controller
is faulty
Seek for technical support
20
E.oLF
Abnormal
output phase
loss
Abnormal connection, missing connection
or disconnection at the output side of the
controller
Check the power connections at the
output side of the controller as per the
operational regulations and eliminate the
errors of missing connection and
disconnection
Imbalance of output three phases
Check whether motor is kept well
Shut down the power supply to check
whether the terminal characteristics both
at the output side and DC side of the
controller are consistent
21
E.EEP
EEPROM
failure
EEPROM reading and writing failure
Seek for technical support
22
E.dL3
Relay contact
failure
Loose connection of connectors inside the
controller
Ask professional technicians to maintain
The power-on buffer circuit is faulty
Seek for technical support
23
E.dL2
Temperature
sensor taking
sample
anomaly
Ambient under temperature
Check whether the ambient temperature
complies with the requirements
The temperature sampling circuit inside
the controller is faulty
Seek for technical support
24
E.dL1
Encoder cable
disconnection
Encoder connection is incorrect
Change the encoder cable connection
Encoder has no signal output
Check whether the encoder and power
supply are normal.
