Wireless Zone Sensors (Wzs) - Trane VUV Installation, Operation And Maintenance Manual

Table 37. Troubleshooting recommendations (continued)
Symptom Heat Cool
265 and 460 volt
X X
unit

Wireless Zone Sensors (WZS)

The receiver for all models has four LEDs: LED1, LED2, LED3,
and LED5. Locations are shown in the following figure.
Note: To view LEDs on a flush mount receiver on a fan coil
unit, the front panel of the unit must be removed.
Figure 86. Receiver for all fan coil models showing LED
locations
LED1
LED1
LED2
LED2
LED3
LED3
S1
SIGNAL
ADDRESS
LED5
LED5
POWER
HEATING SET
FAN/SYSTEM
S5
SETPOINT
ZONE
GND-SIGNAL
24VAC/DC
GND-POWER
COMM +
COMM -
The sensor for a wireless zone sensor (WZS) has four LEDs:
LED1, LED2, LED3, and LED5 and a test button. Locations are
shown in the following figure.
UV-SVX005G-EN
Probably Cause
If the unit fails to start.
1
WIRELESS
Pb-FREE
INSTALL
J2
LED4
S4
S2 S3
C34 J1
C35
R77
Diagnostics and Troubleshooting
Recommended Action
Check fuse in right-hand end pocket inside the transformer
mounting box. Replace with Trane fuse X1311057435 (ABC
type 6A 250V).
Figure 87. WZS showing LED locations and test button
LED1
LED1
LED2
LED2
LED3
LED3
S1
SIGNAL
LED5
ADDRESS
LED5
BATTERY
STATUS
Test button
The sensor for a wireless display sensor (WDS) has test
symbols and error codes that appear on the display, and a test
button. Locations are shown in the following figure.
Figure 88. Wireless display sensor (WDS) shows test
symbols and error codes
Test symbols
Error code
Test button
B1 +
Pb-FREE
S3
S2
STATUS
S4
WIRELESS
INSTALL
J1
B2 -
.
97