White Rodgers 1F87-0261 specifications Troubleshooting, Reset Operation

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.

If the thermostat has power, has been reset and still does not function correctly contact your heating/cooling service person or place of purchase.

Symptom	Possible Cause	Corrective Action
No Heat/No Cool/No Fan	1. Blown fuse or tripped circuit breaker.	Replace fuse or reset breaker.
(common problems)	2. Furnace power switch to OFF.	Turn switch to ON.
	3. Furnace blower compartment door or	Replace door panel in proper position to engage safety
	panel loose or not properly installed.	interlock or door switch.
No Heat	1. System Switch not set to Heat.	Set System Switch to Heat and raise setpoint above
		room temperature.
	2. Loose connection to thermostat or	Verify thermostat and system wires are securely attached.
	system	Diagnostic: Set System Switch to Heat and raise the
	3. Heating System requires service or	setpoint above room temperature. Within a five minutes
	thermostat requires replacement.	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.
No Cool	1. System Switch not set to Cool.	Set System Switch to Cool and lower setpoint below
		room temperature.
	2. Loose connection to thermostat or	Verify thermostat and system wires are securely attached.
	system.	Same procedures as diagnostic for No Heat condi-
	3. Cooling System requires service or	tion except set the thermostat to Cool and lower the
	thermostat requires replacement	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 configuration menu (Item 6).
Heat, Cool or Fan Runs	1. Possible short in wiring.	Check each wire connection to verify they are not
Constantly	2. Possible short in thermostat.	shorted or touching together. No bare wire should
	3. Possible short in Heat/Cool/Fan	stick out from under terminal screws. Try resetting the
	system.	thermostat as described below. If the condition persists,
	4. Fan Switch set to Fan On.	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.
Furnace CyclesToo Fast orToo Slow	1. The location of the thermostat and/	Item 4 (CR Heat) or 5 (CR Cool) in the Configuration
Cooling CyclesToo Fast orToo Slow	or the size of the Heating or Cooling	Menu is the adjustment that controls the cycle rate. If
(narrow or wide temperature swing)	System may be influencing the	an acceptable cycle rate is not achieved using the FA
	cycle rate.	(Fast) or SL (Slow) adjustment contact a local service
		person for additional suggestions.
Thermostat Setting and	1. Thermostat thermometer setting	The thermometer can be adjusted +/-4 degrees as
Thermometer Disagree	requires adjustment.	listed in item 8 of the Configuration Menu. No other
		adjustment is possible.
Clock Loses or Gains Time	1. Loss of power to thermostat.	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.
Heat or Cool Starts Early	1. EMR activated.	See Configuration Menu (Item 3)
Thermostat Does Not Follow	1. AM or PM set incorrectly in program.	Check current clock and program settings including
Program	2. AM or PM set incorrectly on the clock.	the AM or PM designations for each time period. If a
	3. Voltage spike or static discharge.	voltage spike or static discharge occurs use the Reset
	4. See “Heat or Cool Starts Early” above.	Operation listed above.
Blank Display and/or Keypad Not	1. Voltage Spike or Static Discharge.	If a voltage spike or static discharge occurs use the
Responding		Reset Operation listed above.

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