White Rodgers F145-1328 Wired Indoor Remote Sensor Instruccion De Instalación

7

To function correctly and read temperature accurately, the thermostat must have constant 

24-volt pow-

er. If the thermostat temperature is steadily dropping, reading low, or reads 

08° when a remote sensor is 

installed, it can be traced to one of the three following conditions.

1.   Loss of 24-volt 

power.

On models with batteries, remove 
the batteries and re-install ther-
mostat. If the display is blank, 
check heating and cooling system 
to determine why 

24-volt power is 

absent.

For the sensor to read correctly, the 

24-volt system power must be present. 

Some systems may require an isolation 
relay to provide constant power to the 
thermostat. Limit or safety devices in 
the equipment can also cause a power 
interruption.

2.   A broken wire on 

S1, S2 and S3 or 

(+, SA, -) from the 
thermostat to the 
remote.

Disconnect sensor wires at ther-
mostat. Attach a short piece 

(2') 

of three-wire shielded cable to 

S1, S2 and S3 or (+, SA, -) on the 

subbase. Bring the remote sensor 
to the thermostat location and 
attach 

S1, S2 and S3 or (+, S, -) 

respectively. Reattach thermostat. 
If the temperature begins to climb 
(slowly), it is reading correctly. If it 
reads correctly with the 

2' length 

but improperly when attached to 
the wire run, it indicates a fault in 
the wire run.

Repair or replace the 

3 wire shielded 

cable. Be sure the remote wire run is 
not parallel to line voltage wires that 
carry heavy inductive loads, or across 
fluorescent light ballasts that may 
cause an inductance to be transmitted 
to the thermostat.

3.   A shorted or 

damaged remote 
sensor.

Because it is an electronic sensor, 
there are no Ohm values to test. If 
correct conditions as listed in 

1 & 2 

above and the temperature stays at 
or near 

08°, it indicates a shorted or 

damaged remote sensor.

Replace remote sensor.

Note: Digital thermostats and remote sensors acclimate very slowly to temperature change. It may take 
an hour or more for the temperature to acclimate to the room temperature from a low temperature 
reading as outlined above. To expedite the room temperature display use the reset instructions listed in 
the installation instructions for the thermostat model you are working with. When reset, the thermostat 
will default to a room temperature of 

70° and begin sensing room temperature. Be sure to reconfigure 

the installer menu for a remote sensor because the reset function may cancel remote sensing.