Troubleshooting; Reset Operation - White Rodgers 1F80-0261 Installation And Operating Instructions Manual

TROUBLESHOOTING

Reset Operation

If a voltage spike or static discharge blanks out the display
or causes erratic thermostat operation, reset the thermostat
by pressing the , and TIME buttons simultaneously.
Symptom
No Heat/No Cool/No Fan
(common problems)
No Heat
No Cool
Heat, Cool or Fan Runs
Constantly
Furnace Cycles Too Fast or Too Slow
Cooling Cycles Too Fast or Too Slow
(narrow or wide temperature swing)
Thermostat Setting and
Thermometer Disagree
Clock Loses or Gains Time
Heat or Cool Starts Early
Thermostat Does Not Follow
Program
Blank Display and/or Keypad Not
Responding
Possible Cause
1. Blown fuse or tripped circuit breaker.
2. Furnace power switch to OFF.
3. Furnace blower compartment door or
panel loose or not properly installed.
1. System Switch not set to Heat.
2. Loose connection to thermostat or
system
3. Heating System requires service or
thermostat requires replacement.
1. System Switch not set to Cool.
2. Loose connection to thermostat or
system.
3. Cooling System requires service or
thermostat requires replacement
1. Possible short in wiring.
2. Possible short in thermostat.
3. Possible short in Heat/Cool/Fan
system.
4. Fan Switch set to Fan On.
1. The location of the thermostat and/
or the size of the Heating or Cooling
System may be infl uencing the
cycle rate.
1. Thermostat thermometer setting
requires adjustment.
1. Loss of power to thermostat.
1. EMR activated.
1. AM or PM set incorrectly in program.
2. AM or PM set incorrectly on the clock.
3. Voltage spike or static discharge.
4. See "Heat or Cool Starts Early" above.
1. Voltage Spike or Static Discharge.
If the thermostat has power, has been reset and still does not
function correctly contact your heating/cooling service person
or place of purchase.
Corrective Action
Replace fuse or reset breaker.
Turn switch to ON.
Replace door panel in proper position to engage safety
interlock or door switch.
Set System Switch to Heat and raise setpoint above
room temperature.
Verify thermostat and system wires are securely attached.
Diagnostic: Set System Switch to Heat and raise the
setpoint above room temperature. Within a fi ve minutes
the thermostat should make a soft slick sound. This
sound usually indicates the thermostat is operating
properly. If the thermostat does not click, try the reset
operation listed above. 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 manufac-
turer or a service person to verify the heating system is
operating correctly.
Set System Switch to Cool and lower setpoint below
room temperature.
Verify thermostat and system wires are securely attached.
Same procedures as diagnostic for No Heat condi-
tion except set the thermostat to Cool and lower the
setpoint below the room temperature. There may be up
to a fi ve minute delay before the thermostat clicks in
Cooling if the compressor lock-out option is selected in
the confi guration menu (Item 6).
Check each wire connection to verify they are not
shorted or touching together. No bare wire should
stick out from under terminal screws. Try resetting the
thermostat as described below. If the condition persists,
the manufacturer of your system or service person
can instruct you on how to test the Heat/Cool/ system
for correct operation. If the system operates correctly,
replace the thermostat.
Item 4 (CR Heat) or 5 (CR Cool) in the Confi guration
Menu is the adjustment that controls the cycle rate. If
an acceptable cycle rate is not achieved using the FA
(Fast) or SL (Slow) adjustment contact a local service
person for additional suggestions.
The thermometer can be adjusted +/- degrees as listed
in item 8 of the Confi guration Menu. No other adjust-
ment is possible.
The thermostat will maintain its program in memory
even with no power but the clock time will be incorrect
when power is restored. See No Heat/No Cool /No Fan
(common problems) above for items to check in the
system.
See Confi guration Menu (Item 3)
Check current clock and program settings including
the AM or PM designations for each time period. If a
voltage spike or static discharge occurs use the Reset
Operation listed above.
If a voltage spike or static discharge occurs use the
Reset Operation listed above.
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