Diagnostics and Troubleshooting
UNT-SVX07E-EN 133
Testing Battery Status
Initiate a battery status test as follows:
• On the WZS, push the Test button on the sensor (see
location on Figure 102). LED5 on the sensor responds
by indicating the level of battery strength, as shown in
Table 6 8.
• On the WDS, push the Test button on the sensor (see
location on Figure 103). In response, a battery test
symbol appears on the display. The symbol shown
indicates battery life expectancy (see Table 6 9).
24 V Power Status Indicator
LED5 on the receiver of all models (see Figure 101 ,
page 130) lights and stays constantly On when 24 V power
is normal.
Check Signal Strength on a Site
Use the wireless sensor system to check the signal
strength on a site.
1. Power up a receiver with a 24 V transformer (user
supplied).
2. Associate the sensor to a receiver of the same model
intended for the job.
3. Place the receiver at the desired location.
4. Place or hold the sensor at the desired location.
5. Press the Test button (S5) on the sensor and observe
the signal strength as indicated by LED1, LED2, and
LED3 on model WZS (see Figure 102), and on the
display on model WDS (see Figure 103 , page 131).
For more information on interpreting the LEDs and the
display symbols that indicate signal strength, see “Testing
Signal Strength,” page 132.
Replacing Sensor Batteries
Sensor battery type, length of life, and installation are
addressed in this section.
Battery Type
Use two non-rechargeable 1.5 V lithium AA batteries in the
sensor. To maintain UL rating, use only UL-listed lithium
batteries. The sensor ships with Energizer
®
L91 batteries
already installed. Replacement batteries are available at
Trane Service Parts Centers (p/n X13770035010) or other
local suppliers.
Battery Life
Battery life is five years under normal conditions. If the
sensor is not used for an extended period of time, do one
of the following:
• Set the sensor address to 000 to place the sensor into
a low-power hibernation mode.
• Remove the batteries
Table 68. Battery status indicated by LED5 on the wireless zone sensors
User action LED state Indicates...
Press Test
button
Solid green for 5 seconds Battery is adequate for proper operation.
Solid red for 5 seconds 25% battery life left. Batteries should be replaced.
No light Batteries life expired or not installed properly, or sensor is defective.
None
Blinking red: 1-blink pattern
(a)
repeated 5 times.
Cycle repeats every 15 minutes.
Approximately 14 days of operation remain before the battery is too weak
to power the sensor.
(a) Blink pattern is On for 1/4 s, Off for 3/4 s, with 2 s Off between repetitions.
Table 69. Battery status shown on the wireless display sensor
User action
Battery test
symbol Indicates...
Battery test
symbol Indicates...
Battery test
symbol Indicates...
Press Test
button
Full battery
power.
50percent battery
life left.
25 percent battery life left. Replace batteries.
Flashing symbol indicates that approximately
14 days of operation remain before the battery
is too weak to power the sensor.
NOTICE:
Equipment Damage!
The batteries are manufactured in a ready-to-use state.
They are not designed for recharging. Recharging can
cause battery leakage or, in some cases, can cause the
safety release vent to open.
NOTICE:
Equipment Damage!
Do not attempt to hook up the sensor to a power
supply. Equipment damage may result.
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