62 63
No. Message
Type of
message
Symptom Action
20 EF8
Warning
message
Battery voltage is
too low to perform
normal mowing
1. Normally if voltage is low, the mower
should automatically return to the
charging station.
2. If not, please carry your mower
manually to charging station when it
has stopped on the lawn.
21 EF9
Warning
message
Drive motor maybe
locked
Power off then restart the mower. If the
fault still exists, please call after sales
service.
22 EF10
Warning
message
Cutting motor may
be locked
23 E1
Fault
message
Micro-controller
core self-check
fault
24 E3
Fault
message
Cutting motor
stops in use, but
it cannot stop
when switched off
or cutting motor
overloaded.
25 E4
Fault
message
Drive motor cannot
stop when mower
stops.
26 E20
Fault
message
Boundary signal
self-checking error
27 E21/E22
Fault
message
Micro-controller
self-checking error
28 E23
Fault
message
Driving motor
cannot turn when
mower is started
29 E24
Fault
message
Cutting Driving
motor cannot turn
when mower is
started
Hot key
Hot key operation Function
1
+
Display software version number
2
+ +
Active pin code
3
+ +
Active PUK code
4
+
Display fault time and fault code
5
+ Display product serial number
6
+ Open and close rain sensor
SET
START
SET
START
SET
TROUBLESHOOTINGTROUBLESHOOTING
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