Milagrow RedHawk 21 - Troubleshooting Guide; Fault Indication and Solutions

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6. Troubleshooting
Fault indication by
light flashing
Fault name Fault description Solution
The red light flashes
twice, and 1 beep can be
heard.
Left wheel fault
The left wheel does not rotate,
as the left wheel is overloaded.
Please check whether the left wheel
of the machine gets entangled.
The red light flashes 3
times, and 1 beep can be
heard.
Right wheel fault
The right wheel does not
rotate, as the right wheel is
overloaded.
Ple
ase check whether the right
wheel of the machine gets
entangled.
The red light flashes 5
times, and 1 beep can be
heard.
Front wheel fault
The front wheel is stuck and
does not rotate.
Please check whether the front
wheel gets entangled.
The red light flashes 6
times, and 1 beep can be
heard.
Floor inspection
fault or
suspension fault
Cliff or the sensor is dirty or
the machine is off the floor.
Please check whether
the sensor at
the bottom of the machine is blocked
abnormally or do not leave the
machine in a suspended state.
The re
d light flashes 7
times, and 1 beep can be
heard.
The battery
charge level is
low
The battery charge level has
reached its lower limit (other
than recharge voltage
threshold).
Please allow the machine to return
to the charging post for recharge.
The red light flashes 8
times, and 1 beep can be
hear
d.
Front collision
fault
The front shell collision switch
does not reset.
Please check whether the machine
collision buffer is normal or loose.
The red light flashes 9
times, and 1 beep can be
heard.
Middle sweeper
fault
The rolling brush is stuck.
Please check whether the middle
sweeping brush of the machine is
entangled by any foreign object.
The red light flashes 10
times, and 1 beep can be
heard.
Side sweeping
fa
ul
t
The side brush is stuck.
Please check whether the side
sweeping brush of the machine is
entangled by any foreign object.
The red light flashes 11
times, and 1 beep can be
heard.
Wall inspection
fault
There is a problem with the
wall inspection.
Please check whether the wall
inspection transparent window is
blocked or interfered by any foreign
object.
The red light flashes 12
times, and 1 beep can be
heard.
Fan f
au
lt
The fan does not rotate, and
the current is large.
Please check whether the fan blades
are loose or are entangled by any
foreign object.
Tip: If you can't eliminate the corresponding faults with the above
methods, please contact our customer service staff in time.
The red light flashes 14
times, and 1 beep can be
heard.
Charging fault
The battery is damaged or the
battery cable is not in contact.
Please check whether the charging
dock power supply is normal or
replace the battery.
BlackCat 21/RedHawk 21