JMQ A7 PLUS Instruction Manual page 23

No
sensor
The
output
controlled to the
DC motor, and
the motor speed
feedback is not
received
continuously for
more
E3 seconds.
speed 1. Check that the motor cable is securely
signal: connected to the port
voltage 2. When the machine enters the fault
is state,
sounds 9 times, and the fault code is
displayed at the same time. The rest of
the area does not display the content.
After the fault condition is maintained for
about 10 seconds, it enters the standby
state and can be restarted.
than 3 Possible reason: The speed sensor
signal is not detected for 3 seconds,
check if the sensor plug is plugged in or
damaged, plug it in or replace the
sensor.
3. When the machine enters the fault
state,
sounds 9 times, and the fault code is
displayed at the same time. The rest of
the area does not display the content. If
it returns to normal after the shutdown, it
can enter the standby state and start
normally.
the electronic
the electronic
22
watch buzzer
watch buzzer