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2 - Frequency converter
Fault code of
frequency
controller
E1
E2
E3
E4
E5
E6
E7
E8
E9
E10
Table 3 Fault code of water pump
Corresponding
Fault indicating lights
faults
The water shortage fault light (
Lack of water
) is normally on, and the fault
shutdown light (
The water shortage fault light (
Dry running
) is flickering, and the fault
shutdown light ( ) is on.
The sensor fault light (
Sensor is out of
) is normally on, and the fault
order
shutdown light ( ) is on.
The voltage (current) fault
Voltage is too low
light ( ) is on, and the fault
shutdown light ( ) is on.
The voltage (current) fault
Voltage is too high
light ( ) is on, and the fault
shutdown light ( ) is on.
The voltage (current) fault
Current is too large
light ( ) is on, and the fault
shutdown light ( ) is on.
The motor fault light (
Phase loss
and the failure shutdown light
( ) is on.
The motor fault light (
Locked-rotor
flickering, and the failure shutdown
light ( ) is on.
Communication
Er.8 or nothing is displayed in
failure
the display area.
The failure shutdown light
IPM is overheated
( ) is on.
The leakage fault light (
Leakage
on.
Countermeasures
Check whether the water
source and water pressure are
) is on.
sufficient, whether the air inside
pump body is exhausted, and
whether the diameter of inlet
pipe is greater than or equal to
that of outlet pipe.
Check whether the pressure
sensor lead wire is normal or
replace the pressure sensor.
Adjust the supply voltage to
0.9~1.1 times of rated value.
Adjust the supply voltage to
0.9~1.1 times of rated value.
Pull out the plug and plug in
again.
1. Check whether the three-
phase winding of electric
motor is normal.
) is on,
2. Check whether the lead
wire of frequency converter
and electric motor is open-
circuit.
Move the fan to make rotor
) is
rotate flexibly or take apart the
pump body to remove debris.
Open the control box caver,
and check whether the fiat
cable between keypad and
control mainboard is plugged
firmly.
Check whether the ambient
temperature of water pump is
too high.
Please kindly check whether
) is
the pipeline/ pump have
leakage problem.
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