Emerson 1F83C-11PR Instructions D'installation Et D'utilisation page 8

TROUBLESHOOTING (C0ntinued)
Symptom
No Cool
Heat, Cool or Fan
Runs Constantly
Thermostat Display
& Thermometer
Disagree
Furnace (Air
Conditioner)
Cycles Too Fast or
Slow (narrow or
wide temperature
swing)
"Call for Service"
icon appears on
displayed
Resetting the Thermostat or Thermostat Settings
If the thermostat has good batteries, but has a blank display or does not respond to key
presses, the thermostat should be reset by removing the batteries for 2 minutes. This reset
will not change the menu settings or program. If the condition persists after reinstalling the
batteries, replace the thermostat.
To conveniently reset only the schedule and user settings back to factory defaults, press Menu
and Backlight buttons at the same time and hold until the display goes blank and resets.
WARNING: This product contains a chemical known to the state of California to cause
cancer and birth defects and other reproductive harm.
Emerson and White-Rodgers are
trademarks of Emerson Electric Co.
©2020 Emerson Electric Co.
All rights reserved.
Possible Cause
1.) System Switch not set to
Cool
2.) Loose connection to
thermostat or system
3.) Cooling System requires
service or thermostat
requires replacement
Possible short in wiring,
thermostat, heat, cool or fan
system
Thermostat display requires
adjustment
The location of the thermostat
and/or the size of the Heating
System may be influencing the
cycle rate
1.) Heating system is not able
to heat the space to within
10 degrees of the setpoint
within 2 hours
2.) Cooling system is not able
to cool the space to within
10 degrees of the setpoint
within 2 hours
3.) If "--" is displayed for the
Room Temperature, a
replacement thermostat is
needed
4.) None of the buttons operate
on the thermostat
HOMEOWNER HELP LINE: 1-800-284-2925
emerson.com/white-rodgers
Corrective Action
Verify thermostat and system wires are securely
attached.
Diagnostic: Set System Switch to Cool and lower
setpoint below room temperature. Same procedures
as diagnostic for "No Heat" condition except set the
thermostat to Cool and lower the setpoint below the
room temperature. There may be up to a five minute
delay before the thermostat clicks in Cooling if the
compressor lock-out option is selected in the installer
menu. (see INSTALLER MENU, item 50)
Check each wire connection to verify they are not
shorted or touching other wires. Try resetting the
thermostat. If the condition persists contact your
HVAC service person.
Display can be adjusted +/-5°. See User Menu item
04
Digital thermostats provide precise control and cycle
faster than older mechanical models. The system
turns on and off more frequently but runs for a shorter
time. If you would like to increase cycle time, choose
SLO for slow cycle in the Installer menu. (Reference
menu items 30 & 35) If an acceptable cycle rate is not
achieved, contact your HVAC service person.
1.) See corrective action for "No Heat"
2.) See corrective action for "No Cool"
3.) Replace thermostat
4.) Make sure keypad lockout is not turned on
(denoted by icon)