21
Inc OCP
Dec OCP
const OCP
Overcurrent
1.The load of pump is too large;
2.The voltage of solar array is too
low;
3.The motor wiring is too long
4.The power of the inverter is too low
5.The grounding is short circuited or
the output is phase loss
1.Replace for a smaller pump;
2.Check voltage of solar array;
3.Shorten the wiring between
inverter and motor
4.Select the inverter with a
larger power
5. Check if the load is short
curcuited
Overload Pump
Water pump is
overload
1.The motor setting rated current is
incorrent
2.Input voltage is too low
3.Improper motor’s overload
protection threshold
4.Motor block or sudden change of
load
1.
Reset the rated cueernt of the
motor
2.Inspect the input power supply
3.Set proper motor rated current
4.Check the load and adjust
torque boost
Overload VF
Inverter is
overload
1.Acc time is too short
2.Restart the rotating motor
3.Input voltage is too low
4.the load is too heavy
1.Increase the Acc time
2.Avoid restart after power off
3.Check the power supply
4.Select bigger capacity inverter
IGBT short
Module
overcurrent
Output short circuit or grounding
module damage
1.Check the wiring
2.Get after-sells support
Inv Overtemp
Module is over-
temperature
1.Air flue is blocked
2.Environment temperature is too
high
3.The time of overload runing is too
long.
4.Control board abnormal
1.Clean air flue or improve
ventilation
2.Degree the environment
temperature
3.Select a proper motor
4.Ask for support
Rec Overtemp
Module is over-
temperature
Phase out loss
Output default
phase
Phase loss of U,V,W output
(or a serious unbalance in
3phase input)
1.Check the output distribution
2.Check the motor and cable
3.Get after-sells support
Shortcut GND 1
Grounding short
circuit
The output line may be connected
with ground
Check the wiring
Curr fault
Current
detection failure
1.The control board connection is in
poor contact
2.The hall component is damaged
The magnifying circuit is abnormal
3.The magnifying circuit is abnormal
1.Check the connector and
rewire
2.replace the hall component
3.replace the main control panel
4.Get after-sells support
Lack load
when set dry-
power
（
P15.15
）
is not 0.0%
Water pump
conducts “dry-
operation”
1.Water pump’s connection wires are
all open circuit.
2.Water sources are lacking of
water
1.Check P15.15 parameter
2.Check whether the water
pump wiring condition and water
pump power meet the
requirements of inverter capacity
Lack Water
Water shortage
Water shortage warning
1.If the water empty alarm
function is enabled,the device
automatically stops after the
water empty alarm remains for a
certain period of time
，
and no
processing is needed.
2. If the water empty alarm
function is not enabled
，
check
whether there are terminals
misconnected
