Phonetics 1108 - Manual (Page 101)

Appendix A: Troubleshooting
89
The temperature sensor has been disconnected or has broken wires.
2.
The temperature reading is -20
° F
or -30
° C.
Problem T
emperature Monitoring:
Examine the wires to temperature sensor and connect or replace wiring. T
ry mo
ving the unit to a dif
ferent location.
a)
T
emperature sensing may be af
fected by
a source of ambient heat (ie., direct sunlight, or heat duct proximity).
4.
T
emperature reading is inaccurate.
3.
T
emperature reads 150
° F
or 65
° C.
T
emperature sensor wires are touching or
have shorted.
V
erify and correct wiring.
b)
T
emperature may require calibration.
After moving or placing the unit away from ambient heat sources, the temperature may be calibrated to of
fset inaccurate normal
reading by several degrees. Refer to Chapter 5, Section 5.6.
Cause
Solution
1.
Can
’t program temperature limits;
or the unit w
on
’t read the
temperature sensor
.
The input isn
’t conf
igured to read a
temperature sensor
.
Press SET and CONFIGURE to program the input. (See Section 5.1.1 for more informa- tion on configuring inputs.)
c)
The unit is using the wrong temperature
scale (F
ahrenheit vs. Celsius).
V
erify temperature scale. See Chapter 5,
Section 5.5.