6
33
Fault
Code
Reason
Solution
LP
•
Check the installation of pressure
transmitter
•
Check the motor ’s direction of
rotation is correct
•
Check the parameter B01.01 (setting
value too big)
•
Check the pump whether is free of air
1. Abnormal sensor.
2. Motor rotates in reverse
direction
3. Insufficient water inflow
4. There is air inside the
pump
Low
Water
Pressure
Fault
Type
HP
•
Check the installation of pressure
transmitter
•
Check the parameter b01.00 (setting
value too small)
1. Abnormal sensor.
2. The parameter B01.00
setting value is too small
High
Water
Pressure
LL
•
Check the water system
•
Check condition of the control
terminal S3
•
Check the parameter B05.00 and
correct
1. Water level is too low.
2. Abnormal water level
switch.
3. Wrong setting of water
level switch style parameter
Low
Water
Level
7. FAULT AND TROUBLE SHOOTING
Fault
Reason
Solution
Display
Pressure
Error
•
Adopt standard detector
•
Calibration parameter b01.05,
b01.08
•
Shorten wire
1. Detector error
2. Wrong parameter
3. Transducer wires too long
Full
Frequency
Running
•
Check transducer
•
b05.02 should not be set as 1
•
S2-COM
should be open
•
Set B07.14=1, or factory reset
1. Loss of pressure
2. Wrong parameter
3. Pump under power
Pressure
Fluctuation
Stabilizes
Slowly
•
Tune P1 value b02.03, b02.04
•
Tune Acc./Dec. time b05.03, b05.04
•
Shorten wires
1. PID value incorrect
2. Acc./Dec time too fast
3.Big delay on pressure feedback
Motor Noise
•
Check motor
•
Properly set frequency B05.08
1. Motor running abnormally
2. Motor Installation not stable
3. Low carrier frequency
