Omron HEM­-790IT Troubleshooting Manual page 2

Device Errors
Error or symbol
Device shows "EE"
Device shows
"E
E" vertically in two lines
Device shows 'E'
Device shows "Battery
picture with a cross mark"
No Power
No Display appears on the
unit
Cause
Cuff is under‐inflated, or has
not been applied correctly.
Cuff is over‐inflated.
Monitor could not detect
pulse wave.
Air plug is not connected
Batteries are worn
Power off
Resolution
Single Mode:
The monitor will attempt 1 reading.
TrueRead™ Mode:
The monitor will attempt up to 5 times
After the automatic attempts, remove
the arm cuff. Read, "Taking a
Measurement" in the instruction manual.
Take another measurement.
Check air plug connection. Take another
measurement and remain still until the
measurement is complete.
Replace the four batteries.
Refer to "Battery Installation" in the
instructionj manual.
Check that the device is turned on.
Check the battery installation for proper
placement of the battery polarities.
Replace all four batteries with new ones.
If running from a wall outlet, check that
the cord is attached to both the device
and outlet