Troubleshooting, Reset Operation | Technics 1F80-0471 specs

TROUBLESHOOTING

Reset Operation

Note: When thermostat is reset, installer conﬁguration menu settings and programming will reset to factory settings.

If a voltage spike or static discharge blanks out the display or causes erratic thermostat operation, you can reset the thermostat by removing the wires from terminals R and C (do not short them together) 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.

Note: Be sure to review the installer conﬁguration menu settings.

To reset the programming, clock and conﬁguration settings, press and and the FAN button simultaneously. The thermostat should go blank and then all segments will be displayed momentarily.

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 inter-
		panel loose or not properly installed.	lock or door switch.
	4.	Loose connection to thermostat or system.	Tighten connections.

No Heat	1.	Pilot light not lit.	Re-light pilot.
	2.	Furnace Lock-Out Condition. Heat	Many furnaces have safety devices that shut down when
		may also be intermittent.	a lock-out condition occurs. If the heat works intermittently
			contact the furnace manufacturer or local HVAC service
			person for assistance.
	3.	Heating system requires service or	Diagnostic: Set SYSTEM Switch to HEAT and raise the
		thermostat requires replacement.	setpoint above room temperature. Within a few seconds the
			thermostat should make a soft click sound. This sound usu-
			ally indicates the thermostat is operating properly. If the ther-
			mostat 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 HVAC service person to verify the heating
			is operating correctly.

No Cool	1.	Cooling system requires service or	Same as diagnostic for No Heat condition except set the
		thermostat requires replacement.	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.

Heat, Cool or Fan	1.	Possible short in wiring.	Check each wire connection to verify they are not shorted or
Runs Constantly	2.	Possible short in thermostat.	touching together. No bare wire should stick out from under
	3.	Possible short in heat/cool/fan system.	terminal block. Try resetting the thermostat as described
	4.	FAN Switch set to Fan ON.	above. 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 oper-
			ates correctly, replace the thermostat.

Thermostat Setting &	1.	Thermostat thermometer setting	The thermometer can be adjusted +/- 4 degrees. See
Thermostat Thermometer		requires adjustment.	Temperature Display Adjustment in the Conﬁguration Menu
Disagree			section.

Furnace (Air Conditioner)	1.	The location of the thermostat and/or	Digital thermostats provide precise control and cycle faster
Cycles Too Fast or Too		the size of the Heating System may	than older mechanical models. The system turns on and off
Slow (narrow or wide		be inﬂuencing the cycle rate.	more frequently but runs for a shorter time so there is no
temperature swing)			increase in energy use. If you would like an increased cycle
			time, choose SL for slow cycle in the Conﬁguration menu,
			step 6 (heat), 7 (cool) or 8 (heat pump). If an acceptable
			cycle rate is not achieved, contact a local HVAC service
			person for additional suggestions.

White-Rodgers is a division of Emerson Electric Co.

The Emerson logo is a trademark and service mark of Emerson Electric Co.

HOMEOWNER HELP LINE: 1-800-284-2925

www.white-rodgers.com

1F80-0471, 1F80-0471 specifications

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