Emerson 1F83H-21PR Installation And Operating Instructions Manual page 8

TROUBLESHOOTING (C0ntinued)
Symptom Possible Cause
1.) System Switch not set to Cool
2.) Loose connection to thermostat
3.) Cooling System requires
No Cool
Heat, Cool or Fan Possible short in wiring, thermostat,
Runs Constantly heat, cool or fan system
Thermostat
Display & Thermostat display requires
Thermometer adjustment
Disagree
Furnace (Air
Conditioner)
The location of the thermostat and/
Cycles Too Fast or
or the size of the Heating System
Slow (narrow or
may be influencing the cycle rate
wide temperature
swing)
1.) Heating system is not able to heat
2.) Cooling system is not able to cool
"Call for Service" 3.) If "--" is displayed for the Room
icon appears on
displayed
4.) None of the buttons operate on
5.) If "Call for Service" is flashing,
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.
Emerson and White-Rodgers are
trademarks of Emerson Electric Co.
©2020 Emerson Electric Co.
All rights reserved.
or system
service or thermostat requires
replacement
the space to within 10 degrees of
the setpoint within 2 hours
the space to within 10 degrees of
the setpoint within 2 hours
Temperature, a replacement
thermostat is needed
the thermostat
compressor self diagnostic is
detecting an issue with the
outdoor unit
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)
5.) Contact a service person to verify the equipment
is operating correctly