Troubleshooting - Emerson 1F85U-42PR Installation And Operating Instructions Manual

THERMOSTAT SCHEDULE / PROGRAMMING
For tips on programming your thermostat to receive
optimal comfort, convenience and energy savings go to:
thermostathelper.com
Energy Saving Factory Schedule
This thermostat is programmed with the energy saving settings shown in the table below for
all days of the week.
Wake Leave
Heating Schedule 6:00 AM - 70°F 8:00 AM - 62°F
Cooling Schedule 6:00 AM - 75°F 8:00 AM - 83°F
Note: Thermostat can be programmed on or off the subbase
Modify the Heating Schedule
1.) Use the System button to select Heat
2.) Press Menu
3.) Use the
button to select Schedule and press Next to enter the schedule
4.) The time icons will flash – use or
5.) Press Next – the set point icons will flash – use
current period
6.) Continue to press Next to advance through all periods (Wake, Leave, Return, Sleep)
for all days of the week.
Note: Press Back to return to the previous setting. Once all days of the week have been
programmed the thermostat will display End. Press Exit at any time to save changes and
return to home screen.
Modify the Cooling Schedule
1.) Use the System button to select Cool
2.) Repeat steps 2-6 from the heating schedule

TROUBLESHOOTING

Symptom Possible Cause
1.) Blown fuse or tripped circuit
breaker
2.) Furnace power switch to OFF
No Heat/
No Cool/
3.) Furnace blower compartment
No Fan
door panel loose or not properly
(common problem)
installed
4.) Loose connection to thermostat
or system
1.) System not set to Heat
2.) Loose connection to thermostat
or system
3.) Heating System requires
service or thermostat requires
replacement
No Heat
(Troubleshooting continued on next page)
Return Sleep
5:00 PM - 70°F 10:00 PM - 62°F
5:00 PM - 75°F 10:00 PM - 78°F
to set the time for the start of a period
or to set the temperature for the
Corrective Action
1.) Replace fuse or reset breaker
2.) Turn switch to ON
3.) Replace door panel in proper position to
engage safety interlock or door switch
4.) Tighten Connections
1.) Set thermostat to Heat.
2.) Verify thermostat and system wires are
securely attached.
3.) Diagnostic: Set System to Heat and raise the
setpoint above room temperature. Within five
minutes the thermostat should make a soft click
sound and "Heat On" should appear on display.
This sound indicates the thermostat is operating
properly. If the thermostat does not click, try the
reset operation listed below. If the thermostat
does not click after being reset, contact your
heating and cooling service person or place of
purchase for a replacement. If the thermostat
clicks, contact the furnace manufacturer or a
service person to verify the heating system is
operating correctly.
7