PDS33 Series
- 43 -
Fault
code
Fault description
Possible causes
Remedy
Power circuit abnormal
Err19
Motor tuning
failure
Incorrect settings of motor
parameters
Set motor parameters
according to motor plate
Err21
Parameters writing
& reading failure
Control board failure.
Change another board or
look for technical support
Err22
EEPROM checking
failure
EEPROM damaged
Ask for technical support
Err24
Water shortage
fault
Water shortage of water source
Stop the controller Repair
broken wiring or replace
water level switch
Verify if the setting of FD.12
"Water shortage detection
current ratio" is too high, while
FD.10 "Water shortage detection
time" is non-zero and the current
sensing is enabled.
Reduce setting value of
FD.12
Err26
Running time
reached
Accumulated running time
reached set value
Restore factory settings
Err29
Powering time
reached
Accumulated powering time
reached set value
Restore factory settings
Err31
PID feedback loss
when running
Abnormal PID feedback signal
Check PID signal
PID feedback signal is below
detect value
Adjust PID feedback detect
value and detect time
Err40
Overtime fault of
fast-current limit
Load too heavy or motor stuck
Reduce load
，
or check the
motor
Rate of controller too small
Change upper rate controller
Err98
/99
Internal
Communication
Poor contact between keyboard
and control board
Check connect cable
