PDS33 Series
- 44 -
Fault
code
Fault description
Possible causes
Remedy
fault
Keypad failure
Look for technical support
5.2 Common Faults and Remedies
Order
Fault
phenomenon
Possible cause
Remedy
1
No display
on keypad
Abnormal input voltage
Check whether input voltage is in
normal range
Poor contact between
keyboard and control
board
Check connect cable
Inner instrument failure
Look for technical support
2
Pump cannot
run
Lack of input power
（
light
）
Increase panel power or restart at
enough light
Motor failed or stuck
Replace the motor or check
mechanical fault
Incorrect wiring of
motor
Confirm whether wiring is
correct
3
DI terminal
failure
Incorrect setting of
parameters
Check and reset F5 group
parameters
External fault
Reconnect signal wire
，
and clear
external faults
Control board failure
Look for technical support
4
Controller
interference
Abnormal carrier
frequency
Reduce carrier frequency
properly
Incorrect ground
method
The controller and pump shall
both be grounded
（
not together
with other external devices
）
Cable too long between
controller and motor
Install output reactor or reduce
length of cable
5
Big noise of
motor
Motor failed or stuck
Replace the motor or check
mechanical fault
Abnormal carrier
frequency
Increase carrier frequency
properly
