Nextivity CELFI-RS224WUA Manuel D’Utilisation

Place the Coverage Unit:

Move to a location in your home where you need to improve coverage. 
Plug the Coverage Unit into an easily accessible outlet. After several 
minutes, the numeric display will stop cycling.

If your device is set up properly, the green icon will 
appear on the display as seen to the left. It is pos-
sible to place the Coverage Unit so far away that it 
can not communicate with the Window Unit. If this 
happens,  a  red  icon  will  illuminate  indicating  that 
you need to move the Coverage Unit closer to the 
Window Unit.

CEL-FI

2

 

A zero on the numeric 

display indicates that the 

Coverage Unit needs to 

be moved farther away 

from the Window Unit.

This green icon indicates 

that the Coverage Unit is 

functioning normally.

This red icon indicates 

that the Coverage Unit 

needs to be moved closer 

to the Window Unit.

 

Optimize the Window Unit Placement:

The bars on the front of the device indicate the strength of the 
3G/4G signal in the area. Moving the Window Unit to a different 
location in your home may increase the signal, and can make a 
significant difference in the quality of your service. 

Optimize The Coverage Unit Placement:

Place the Coverage Unit as far away as possible from the Window Unit. The number on 
the side of the display indicates the quality of the placement. For the best service experi-
ence, move the Coverage Unit around your home until an 8 or 9 displays.

WINDOW 

UNIT

COVERAGE

UNIT

No lights display on the  Window 

Unit. 

 

Status indicator flashes green for more 

than one minute.
Status indicator is solid red 

The status indicator is solid green and 

no bars display on the signal display

No lights on Coverage Unit 

display. 

 

7 segment display is cycling 

for more than a minute. 

7 segment display shows a value 

of 0.
Red “Too Far” Indicator. 

Red Status Indicator.

E1 

E3  

E4 
E8

Low Coverage Unit number or Window 

Unit input signal.

The device is not receiving power. 

 

 

The Window Unit is attempting to 

select a channel between the units.
The device has a hardware error.  

The device does not have 3G or 4G 

signal.

There is no power. 

 

 

The Coverage Unit is taking longer than 

normal to make a link. 

The Coverage Unit is “Too Close” to the 

Window Unit.
The Coverage Unit is “Too Far” from the 

Window Unit
hardware Error. 

No 3G signal on Window Unit.

Coverage Unit is overheating.

Window Unit is overheating.
Input signal too strong.

Window Unit and Coverage Unit are 

too close together or Window Unit 

signal level is low.

1. Is the unit plugged in? 

2. Is there power at the outlet? 

3.  Try exchanging the power supplies with the Coverage Unit to see if the power 

supply is defective.

1. Wait for the status indicator to stop flashing. This could take several minutes. 

1. Try resetting the Window Unit by unplugging it and then plugging it back in.

2. If problem persists return system for service/replacement.
1.  Try moving the Window Unit to another room or area where you have more 

coverage. (Use your cell phone to find the best 3G coverage).

1. Is the unit plugged in? 

2. Is there power at the outlet? 

3.  Try exchanging the power supplies with the Window Unit to see if the power 

supply is defective.

1. Wait for the display to stop cycling. This could take several minutes 

2. Move away from WiFi or other wireless devices. 

1. Move the Coverage Unit farther away from the Window Unit.

1. Move the Coverage Unit closer to the Window Unit.

1. Try resetting the Coverage Unit by unplugging it and then plugging it back in.
2. If problem persists return system for service.

Try moving the Window Unit to another room or area where you have coverage. 

(Use your cell phone to find the best 3G coverage). 
Make sure that the vents on the unit are not blocked. Move the unit to a cooler area. 

The system will start working normally when it cools down.
The signal from the wireless network is too strong to use a booster.

Move Coverage Unit away from the Window Unit to get a higher coverage num-

ber. This may require placing the Coverage Unit on the opposite end of your home. 

higher numbers indicate better coverage. You can also move the Window Unit to 

an area with better 3G/4G signal. 

ERROR  

MESSAGES

PERFORMANCE

qsg-TMOBILE_RS2.2-English_14-0221/ TM1849

+

COVERAGE 

UNIT

WINDOW 

UNIT

Signal

Indicators

Power & Status