10
XT300C DELUXE PROGRAMMABLE HEAT-COOL THERMOSTAT
69-1212—1
Pub. No. 18-HD25D1-3
DEVICE INFORMATION
SELF-TEST (70)
1. Press Temp
▲
and
▼
keys simultaneously, then press
Time
▼
▼
to access the thermostat information.
2. Press Increase
▲
to display the production date code
in a 3-digit format. The first two digits represent the
month and the third digit represents the last digit of the
year (Example: 128=December 1998).
3. Press Increase
▲
again to display the software
identification code.
(Example: 200 = software ID code 200)
4. Press Increase
▲
again to display the software revision
number (Example: 001=Revision number 1).
5. Press the Increase
▲
again to display the model
identification number. (Example: 314 = Model ID 314)
6. Press Run Program to exit the self-test. The self-test
mode times out 5 minutes after the last key press.
CHECKOUT
Outdoor Temperature Sensor
(optional accessory)
Expose the outdoor temperature to outdoor air for a minimum
of five minutes before reading.
M4934
M17112
M17113
M10229
M4933A
TROUBLESHOOTING GUIDE
(
continued)
Symptom
Possible Cause
Action
Display will not come
on.
Thermostat is not being
powered.
Check for 24 Vac between R and W terminals.
Check if the circuit breaker is tripped—reset the circuit breaker.
Check if the system fuse is blown—replace the fuse.
Check if the power switch on the HVAC equipment is in the Off
position—set to the On position.
Check wiring between thermostat and HVAC equipment—replace
any broken wires and tighten any loose connections.
If 24 Vac is present, proceed with troubleshooting.
Temperature display
is incorrect.
Room temperature display has
been reconfigured.
Enter Installer Setup number 37 and reconfigure the display.
Thermostat is configured for
°
F or
°
C display.
Enter Installer Setup number 14 and reconfigure the display.
Bad thermostat location.
Relocate the thermostat.
Temperature
displaying digits as
dashes (---).
Internal temperature
measurement failure.
Contact distributor or retailer.
Temperature settings
will not change.
(Example:
The upper or lower
temperature limits were
reached.
Check the temperature setpoints:
Heating limits are 55 to 85
°
F (13 to 29
°
C).
Cooling limits are 65 to 99
°
F (18 to 37
°
C).
Cannot set the
heating higher or the
cooling lower.)
The setpoint temperature
range stops were configured.
Check Installer Setup numbers 34 and 35 and reconfigure the
setpoint stops.
