Acu-Rite 622 Troubleshooting, Possible Solution, Inaccurate forecast, Problem, No outdoor sensor

Models: 622

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Possible Solution






• Relocate the display unit and/or the 3-in-1 sensor.






The units must be within 330 ft (100 m) of each other.






• Make sure both units are placed at least 3 feet (.9 m)






away from electronics that may interfere with the wireless






communication (such as TVs, microwaves, computers, etc).






• Use standard alkaline batteries (or lithium batteries in

No outdoor sensor

sensor when temperature is below -4ºF/-20ºC). Do not use

heavy duty or rechargeable batteries. NOTE: It may take


up to 20 minutes for display unit and sensor to synchronize





no bars

after batteries are replaced.









• Synchronize the units:










Bring both the sensor and display unit indoors and







remove at least one battery from each.







Make sure the A-B-C switch on both units match.







Reinstall the battery in the outdoor sensor.







Reinstall battery into the display unit.







Let the units sit within a couple feet of each other for







about 20 minutes to gain a strong connection.


Flashing of the outdoor temperature may be an indication of


wireless interference:

• Make sure the A-B-C switch in the battery compartments of


is flashing or

both the display unit and sensor are switched to the same

letter. You may choose A, B or C; but both units must match

showing dashes

to sync up. Sometimes changing to a different channel can




• Weather Forecast icon predicts conditions for the next 12


to 24 hours, not current conditions.


• Has Learning Mode icon disappeared from the display

Inaccurate forecast

unit? Learning Mode must complete before forecast and

pressure will be accurate.


• Allow unit to run continuously for 33 days. Battery removal


or resetting the display unit will restart Learning Mode.


After 14 days, forecast should be fairly accurate, however


Learning Mode calibrates for a total of 33 days.


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Acu-Rite 622 Troubleshooting, Possible Solution, Inaccurate forecast, Problem, No outdoor sensor, reception, Outdoor