
DN:KD-926-SMSY01 V1.0 Operation Guide
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14. TROUBLESHOOTING (2)
PROBLEM
POSSIBLE CAUSE
SOLUTION
LCD shows low battery
symbol
Low Battery
Change the batteries
LCD shows “Er 0”
Pressure system is unstable
before measurement
Don’t move and try again.
LCD shows “Er 1”
Fail to detect systolic pressure
LCD shows “Er 2”
Fail to detect diastolic pressure
LCD shows “Er 3”
Pneumatic system blocked or cuff
is too tight during inflation
Apply the cuff correctly and
try again
LCD shows “Er 4”
Pneumatic system leakage or
cuff is too loose during inflation
LCD shows “Er 5”
Cuff pressure above 300mmHg
Measure again after five
minutes. If the monitor is
still abnormal, please
contact the local distributor
or the factory.
LCD shows “Er 6”
More than 3 minutes with cuff
pressure above 15 mmHg
LCD
shows “Er 7”
EEPROM accessing error
LCD shows “Er 8”
Device parameter checking error
LCD shows “Er A”
Pressure sensor parameter error
No response when you
press button or load
battery.
Incorrect operation or strong
electromagnetic interference.
Take out batteries for five
minutes, and then reinstall
all batteries.
Bluetooth
connection
unstable
Bluetooth connection
unsuccessful, monitor is
abnormal, or strong
electromagnetic interference is
present
Reset iOS/Android device.
Reset monitor. Make sure
the monitor and
iOS/Android device are
away from other electrical
equipment. Please see
GENERAL SAFETY AND
PRECAUTIONS