White Rodgers 1F85RF-275 specifications Troubleshooting, Reset Operation

TROUBLESHOOTING

Reset Operation

If a voltage spike or static discharge blanks out the display or causes erratic thermostat operation, you can reset the thermo- stat by removing the wires from terminals R and C and removing batteries for 2 minutes. After resetting the thermostat, replace the wires and batteries. If the thermostat has been reset and still does not function correctly contact your heating/ cooling service person or place of purchase.

Pressing and and the SYSTEM keys at the same time will reset the thermostat to its factory default setting. This will also clear any limited temperature ranges or keypad lockout settings. Note default system configuration is multistage system operation.

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
	panel loose or not properly installed.	safety interlock or door switch.
No Heat	1. Pilot light not lit.	Re-light pilot.
	2. SYSTEM Switch not set to HEAT.	Set SYSTEM Switch to HEAT and raise setpoint
		above room temperature.
	3. Loose connection to thermostat or	Verify thermostat and system wires are securely
	system.	attached.
	4. Furnace Lock-Out Condition. Heat	Many furnaces have safety devices that shut down
	may also be intermittent.	when a lock-out condition occurs. If the heat works
		intermittently contact the furnace manufacturer or
		local service person for assistance.
	5. Heating system requires service or	Diagnostic: Set SYSTEM Switch to HEAT and raise
	thermostat requires replacement.	the setpoint above room temperature. Within a few
		seconds the thermostat should make a soft click
		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 manufacturer or a service
		person to verify the heating 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
	system.	attached.
	3. Cooling system requires service or	Same procedure as diagnostic for No Heat condition
	thermostat requires replacement.	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.
Thermostat does not	1. Program or current time(s) set	Verify that the AM or PM settings are correct for
Follow Program	incorrectly (AM, PM or Day of the	each program period and the current time of day.
	week).	Also verify the Day of the week is set correctly.
	2. Energy Management Recovery	The EMR (Energy Management Recovery) feature
	(EMR) starting the program early.	starts early to achieve the temperature it is pro-
		grammed for by the time specified in the program.
		See the Configuration Menu section to disable
		EMR if you do not want the thermostat to start early.

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