25
6. Troubleshooting
Failure
Possible fault cause
Solution
Power turned on,
but power
indicator lights
out
Loose wire connection/ poor
switch contact
→
Results in
power outage
Check the pipe of the battery
wire, tighten screws of all
electrical connectors, keep
switch contact smooth
Unstable lifting
and bag speed
Air in cylinder
Drain the forks completely 2-3
times and then drop to vent the
cylinder
Pallet car does not
lift
No/too little hydraulic oil
Refill oil (use #32 hydraulic oil)
Battery voltage too low
Charge battery
Leakage in hydraulic circuit
Inspect where the leakage is
located and repair, swap gaskets,
tighten screws of hose
connection
Overloaded (load heavier than
1500kg)
Reduce the load to be lifted to
the maximum payload of the
pallet car (1500kg)
Abnormal sound
from pump
system during
lifting and bags
Too little hydraulic oil or oil is
contaminated
Refill hydraulic oil or replace it
entirely with new #32 hydraulic
oil
Scraping sound between
engine and loose engine lid
Tighten the screws/bolts
Humid environment
Humidity ≤90%
#
Fault
failure
Code
Failure
Possible Cause
1
11
Parameter error
Wrong parameter setting
2
12
Span
Engine short circuit or controller failure
3
14
M+ current 0 bit detection
error
Interference controller
4
15
M+ current 0 bit detection
error
Interference controller
5
18
Hall sensor engine error
Hall sensor malfunction, controller failure or
poor connection
6
19
Temperature sensor
failure
Temperature sensor or circuit failure
Breaking
7
21
Potentiometer error
Potentiometer acceleration failure or circuit
error
8
22
Overheating current limit
Controller is overheated causing the flow limit
9
23
Overheating protection
Controller is overheated and stops
automatically
with work
10
25
Overtake temperature,
flow output limit
Engine too high temperature, power output
limit
11
26
Engine blocked
Engine blockade protection
12
27
Electromagnetic braking
error
Electromagnetic brake is broken and causes
an open circuit
13
29
Motor open circuit
Engine open circuit or engine failure
14
31
Low battery voltage,
power limit
Low battery voltage causes power limit
