White Rodgers 1F80-71 User Manual

Your new White Rodgers 5-Day/2-Day Single Stage Digital Thermostat uses the technology of a solid-state microcomputer to provide precise time/temperature control. This thermostat offers you the flexibility to design heating and cooling programs that fit your needs. Optional Energy Management Recovery (EMR). Optional B and O terminals. Preprogrammed temperature control. LCD continuously displays set point, and alternately displays time and room temperature. Temperature override until next program period. Manual program override (HOLD temperature). °F/°C convertibility. Separate 5-day (weekday) and 2-day (weekend) programming with four separate time/temperature periods per program. Temperature range 45° to 90°F. Keypad lockout. Armchair programming capability. Simultaneous heat and cool program storage. Automatic changeover. Optional C terminal (dual power option). Below are the key specifications, installation, operation, programming, and troubleshooting instructions.

1. Preparations 2. Thermostat Details 3. Removing Old Thermostat 4. Mounting and Wiring 4.1 Wiring Diagrams 5. Check Operation 5.1 Fan Operation 5.2 Heating System 5.3 Cooling System 6. Operating Features 7. Programming 8. Specifications 9. Troubleshooting

Preparations

Assemble tools: screwdriver, wire stripper. FAILURE TO READ AND FOLLOW ALL INSTRUCTIONS CAREFULLY BEFORE INSTALLING OR OPERATING THIS CONTROL COULD CAUSE PERSONAL INJURY AND/OR PROPERTY DAMAGE.

CAUTION: To prevent electrical shock and/or equipment damage disconnect electric power to system at main fuse or circuit breaker box until installation is complete. Do not exceed the specification ratings.
WARNING: All wiring must conform to local and national electrical codes and ordinances. Do not use on circuits exceeding specified voltage. Higher voltage will damage control and could cause shock or fire hazard. This control is a precision instrument, and should be handled carefully. Rough handling or distorting components could cause the control to malfunction. Do not short out terminals on gas valve or primary control to test. Short or incorrect wiring will damage thermostat and could cause personal injury and/or property damage.

This thermostat is intended for use with a 24-volt system; do not use this thermostat with a millivolt or line voltage system. If in doubt about whether your wiring is millivolt, line, or low voltage, have it inspected by a qualified heating and air conditioning contractor or electrician.

Thermostat Details

The thermostat consists of two parts: the thermostat cover and the base. To remove the cover, gently pull it straight out from the base. To replace the cover, line up the cover with the base and press gently until the cover snaps onto the base. Other than up and down arrows, the following buttons and switches are located behind the door on the bottom of the thermostat cover (see fig. 6). Pull the door down to open it.

The Thermostat Buttons and Switches:

Up arrow: Raises temperature setting.
Down arrow: Lowers temperature setting.
SET TIME button.
VIEW PRGM (program) button.
RUN PRGM (program) button.
HOLD TEMP button.
SYSTEM button (COOL, OFF, HEAT, AUTO).
FAN switch (ON, AUTO).

The Display:

Indicates day of the week.
HEAT is displayed when the SYSTEM button has been pressed to put the thermostat in the HEAT mode. COOL is displayed when the SYSTEM button has been pressed to put the thermostat in the COOL mode. COOL is displayed (flashing) when the compressor is in lockout mode. AUTO is displayed when the SYSTEM button has been pressed to put the thermostat in the automatic changeover (AUTO) mode. ON indicates that the heating or cooling system is running.
In AUTO mode, pressing up and down at the same time will change the displayed setpoint temperature to the setpoint of the other mode (HEAT or COOL). This allows you to change both the HEAT and COOL setpoints, if desired.
Alternately displays current time and temperature.
The word HOLD is displayed when the thermostat is in the HOLD mode.
BATT is displayed when approximately 70% of battery life has been exhausted.
Displays currently programmed set temperature (this is blank when SYSTEM button has been pressed to turn the system OFF).
LK is displayed when keypad lockout has been activated.

Figure 6. Thermostat display, buttons, and switches

Display elements: MO TU WE TH FR, P, SA SU, HEAT ON, LK, COOL ON, BATT, HOLD, AUTO, 15 14 13 12 10 10, SET TIME VIEW PRGM RUN PRGM HOLD TEMP, SYSTEM FAN ON AUTO, COOL-OFF-HEAT-AUTO. Illustration of the thermostat display showing time, temperature, day indicators, mode icons, and button locations.

Removing Old Thermostat

Shut off electricity at the main fuse box until installation is complete. Ensure that the electrical power is disconnected. Remove the front cover of the old thermostat. With wires still attached, remove wall plate from the wall. If the old thermostat has a wall mounting plate, remove the thermostat and the wall mounting plate as an assembly. Identify each wire attached to the old thermostat using the labels enclosed with the new thermostat. Disconnect the wires from the old thermostat one at a time. DO NOT LET WIRES FALL BACK INTO THE WALL.

Mounting and Wiring

Remove the packing material from the thermostat. Gently pull the cover straight off the base. Forcing or prying on the thermostat will cause damage to the unit.

Wiring Diagrams

NOTE: The following wiring diagrams show typical terminal identification and wiring. For proper installation, refer to the original manufacturer's instructions. * The 24 Volt neutral connection to terminal C on the thermostat is not required if you replace the batteries once a year with fresh “AA” Energizer® alkaline batteries. Relay contacts shown are thermostatically operated.

Figure 3. Typical wiring diagram for single transformer systems

Thermostat terminals: C*, R, B, O, Y, G, W. System: Energized in HEAT (Heating System), Energized in COOL (Cooling System), Fan Relay. Transformer: 24 VAC (Hot, Neutral), 120 VAC. Single transformer setup with connections to heating, cooling, and fan systems.

Figure 4. Typical wiring diagram for two-transformer systems with NO safety circuits

Thermostat terminals: B, C*, R, Y, G, O, W. System: Energized in COOL (Cooling System), Energized in HEAT (Heating System), Fan Relay. Transformers: 24 VAC (Hot, Neutral) for heating, 120 VAC (Hot, Neutral) for cooling. Note: CUT AND TAPE OFF! TWO COMMONS MUST BE JUMPERED TOGETHER! Dual transformer setup without safety circuits, with jumpered commons.

Figure 5. Typical wiring diagram for two-transformer systems with safety circuits in BOTH systems

Thermostat terminals: B, C*, R, Y, G, O, W. System: Energized in COOL (Cooling System), Energized in HEAT (Heating System), Fan Relay, Accessory Relay N.O. Contact. Transformers: HEATING TRANSFORMER (24 VAC Hot, Common, Neutral), COOLING TRANSFORMER (24 VAC, 120 VAC Hot, Neutral). Safety: Limit or Safety Switches in both systems. Note: * The 24 Volt neutral connection to terminal C on the thermostat is not required if you replace the batteries once a year with fresh “AA” Energizer® alkaline batteries. TWO COMMONS MUST BE JUMPERED TOGETHER! Dual transformer setup with safety circuits, including limit switches and accessory relay.

Connect wires beneath terminal screws on base using appropriate wiring schematic.
Place base over hole in wall and mark mounting hole locations on wall using base as a template.
Move base out of the way. Drill mounting holes.
Fasten base loosely to wall using two mounting screws. Adjust until level, and then tighten screws.
Push excess wire into wall and plug hole with a fire-resistant material (such as fiberglass insulation) to prevent drafts from affecting thermostat operation.

Check Operation

NOTE: If at any time during testing, your system does not operate properly, contact a qualified serviceperson.

Fan Operation

Turn on power to the system.
Press SYSTEM button until the system is OFF.
Move FAN switch to ON. The blower should begin to operate.
Move FAN switch to AUTO position. The blower should stop immediately.

Heating System

Press SYSTEM button until HEAT is displayed. If the heating system has a standing pilot, be sure to light it.
Press up arrow to adjust thermostat setting above room temperature. The heating system should begin to operate.
Press down arrow to adjust temperature setting below room temperature. The heating system should stop operating.

Cooling System

CAUTION: To prevent compressor and/or property damage, if the outdoor temperature is below 50°F, DO NOT operate the cooling system.

Press SYSTEM button until COOL is displayed.
Press up arrow to adjust thermostat setting below room temperature. The blower should come on immediately on high speed, followed by cold air circulation.
Press down arrow to adjust temperature setting above room temperature. The cooling system should stop operating.

Lockout Bypass Option: NOTE: FOR QUALIFIED SERVICE TECHNICIANS’ USE ONLY. OPERATORS SHOULD NOT USE THIS FEATURE DUE TO POSSIBILITY OF EQUIPMENT OR PROPERTY DAMAGE, OR PERSONAL INJURY. FOR QUALIFIED SERVICE TECHNICIANS’ USE ONLY. OPERATORS SHOULD NOT USE THIS FEATURE DUE TO POSSIBILITY OF EQUIPMENT OR PROPERTY DAMAGE, OR PERSONAL INJURY. Compressor Short Term Cycle Protection: This thermostat has a built-in short term (5-minute) time delay. During this 5-minute period, the thermostat will lock out the compressor to allow head pressure to stabilize. If you want to override this feature while testing thermostat operation, simply press up and down buttons at the same time. DO NOT USE THE LOCKOUT BYPASS OPTION UNLESS THE COMPRESSOR OIL HEATERS HAVE BEEN OPERATIONAL FOR 6 HOURS AND THE SYSTEM HAS NOT BEEN OPERATIONAL FOR AT LEAST 5 MINUTES. This thermostat has a built-in short-term (5-minute) time delay. This feature is activated after the compressor shuts down and the setpoint is changed within the 5-minute period. During this 5-minute period, COOL will flash on the display indicating that the thermostat has locked out the compressor to allow head pressure to stabilize. This thermostat does not sense AC power loss and therefore does not activate the short term compressor protection feature when power is restored.

Operating Features

AUTOMATIC CHANGEOVER: If you have a heating/cooling system, you can set the thermostat to automatically switch from heat to cool as needed to maintain setpoint temperature. To select this mode, press SYSTEM button until AUTO is displayed along with HEAT or COOL, identifying the program automatically selected.
TOTAL KEYPAD LOCKOUT: This security feature allows you to lock out the thermostat buttons to prevent unauthorized tampering. To select this feature after programming, press SET TIME and RUN PRGM buttons at the same time and hold until LK is displayed. To unlock the thermostat, press SET TIME and RUN PRGM buttons at the same time until LK is no longer displayed.
TEMPERATURE OVERRIDE: Press up or down until the display shows the temperature you want. The thermostat will override current programming and keep the room temperature at the selected temperature until the next program period begins. Then the thermostat will automatically revert to the program.
HOLD TEMPERATURE: The thermostat can hold any temperature within its range for an indefinite period, without reverting to the programmed temperature. Press the HOLD TEMP button. HOLD will be displayed. Then choose the desired hold temperature by pressing up or down. The thermostat will hold the room temperature at the selected setting until you press RUN PRGM button to start program operation again.
SIMULTANEOUS HEATING/COOLING PROGRAM STORAGE: When programming, you can enter both your heating and cooling programs at the same time. There is no need to reprogram the thermostat at the beginning of each season.
°F/°C CONVERTIBILITY: Press SET TIME and HOLD TEMP buttons until the temperature display is in Celsius. To display Fahrenheit, repeat the process.
TEMPERATURE DISPLAY ADJUSTMENT: Your new thermostat has been accurately set in our factory. However, if you wish, you may adjust your new thermostat temperature display to match your old thermostat. This can be accomplished (within a ±4°F range) as follows: 1. Press VIEW PRGM and HOLD TEMP buttons at the same time. 2. Press up or down to adjust the displayed temperature to your desired setting. 3. Press RUN PRGM to resume normal program operation.

Programming

This section will help you plan your thermostat’s program to meet your needs. For maximum comfort and efficiency, keep the following guidelines in mind when planning your program. When heating (cooling) your building, program the temperatures to be cooler (warmer) when the building is vacant or during periods of low activity. During early morning hours, the need for cooling is usually minimal.

Look at the factory preprogrammed times and temperatures shown below. If this program will suit your needs, simply press the RUN PRGM button to begin running the factory preset program.

Use the table at the bottom of the page to plan your program time periods, and the temperatures you want during each period. You may also want to look at the sample program table to get an idea of how the thermostat can be programmed.

Set Current Time and Day

Press SET TIME button once. The display will show the hour only.
Press and hold either up or down until you reach the correct hour and AM/PM designation (AM begins at midnight; PM begins at noon).
Press SET TIME once. The display will show the minutes only.
Press and hold either up or down until you reach the correct minutes.
Press SET TIME once. The display will show the day of the week.
Press up or down until you reach the current day of the week.
Press RUN PRGM once. The display will show the correct time and room temperature alternately.

Enter Heating Program

Move the SYSTEM switch to HEAT.
Press VIEW PRGM once. “MO TU WE TH FR” (indicating weekday program) will appear in the display.
Press up or down to change the displayed temperature to your selected temperature for the 1st heating program period.
Press SET TIME once (the programmed time will flash). Press up or down until your selected time appears. The time will change in 15 minute increments.
Press VIEW PRGM once. Repeat for 2nd, 3rd, 4th periods and for weekend.
When you have completed entering your heating program, press RUN PRGM.

Enter Cooling Temperatures

CAUTION: If the outside temperature is below 50°F, disconnect power to the cooling system before programming. Energizing the air conditioner compressor during cold weather may cause personal injury or property damage.

Move SYSTEM switch to COOL position.
Follow the procedure for entering your heating program, using your selected cooling times and temperature.

Check your programming

Move the SYSTEM switch to HEAT position.
Press VIEW PRGM to view the 1st weekday heating period time and temperature. Each time you press VIEW PRGM, the next heating period time and temperature will be displayed in sequence.
Press RUN PRGM.
Move SYSTEM switch to COOL position. Repeat to check cooling temperatures.
Press RUN PRGM to begin program operation.

Factory Preprogramming

PERIOD	TIME	TEMP
1st	6:00 AM	70°F
2nd	8:00 AM	62°F
3rd	5:00 PM	70°F
4th	10:00 PM	62°F

Specifications

Electrical Rating: 8 to 30 VAC 50/60 Hz. or D.C.; 0.05 to 1.5 Amps (Load per terminal); 1.5 Amps Maximum Total Load (All terminals combined)
Setpoint Temperature Range: 45°F to 90°F (7°C to 32°C)
Operating Ambient Temperature Range: 32°F to 105°F
Operating Humidity Range: 0 to 90% RH (non-condensing)
Shipping Temperature Range: -40°F to 150°F

Troubleshooting

Symptom	Possible Cause	Corrective Action
No Heat/No Cool/No Fan (common problems)	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. Replace fuse or reset breaker. 2. Turn switch to ON. 3. Replace door panel in proper position to engage safety interlock or door switch.
No Heat	1. Pilot light not lit. 2. Loose connection to thermostat or system. 3. Thermostat or heating system requires replacement or service. 4. SYSTEM Switch not set to HEAT.	1. Re-light pilot. 2. Verify thermostat and system wires are securely attached. 3. Your furnace manufacturer or service person can describe how to test the heating system to verify it is operating correctly. If the heating system is capable of operation and the no heat condition persists, replace the thermostat. 4. Set SYSTEM Switch to HEAT and raise temp above room temp.
No Cool	1. Loose connection to thermostat or system. 2. Thermostat or cooling system requires replacement or service. 3. SYSTEM Switch not set to COOL.	1. Verify thermostat and system wires are securely attached. 2. Your cooling system manufacturer or service person can describe how to test the cooling system to verify it is operating correctly. If the cooling system is capable of operation and the no cooling condition persists, replace the thermostat. 3. Set SYSTEM Switch to COOL and lower temp below room temp.
Heat, Cool or Fan Runs Constantly	1. Possible short in wiring. 2. Possible short in thermostat. 3. Possible short in heat/cool/fan system.	Check each wire connection to the thermostat to verify it is neatly looped under the terminals. No extra wire should stick out from under the terminals.
Furnace Cycles Too Fast or Too Slow (narrow or wide temperature swing)		The cycle rate is fixed. The location of the thermostat, size of the Heat/Cool System and current draw can influence the cycle rate. Contact a local service person for additional suggestions.
Cooling Cycles Too Fast or Too Slow (narrow or wide temperature swing)	1. Poor thermostat location for sensing room temperature. 2. Cooling system over or undersized. 3. Excessive Current draw influencing thermostat.	The cycle rate for cooling can not be adjusted. The location of the thermostat, size of the Cool system and current draw can influence the cycle rate. Contact a local service person for suggestions.
Thermostat Setting and Thermostat Thermometer Disagree	1. Thermostat thermometer setting requires adjustment.	The thermometer can be adjusted by using a standard slotted screwdriver. Turn the thermometer pointer screw located inside the front cover to change the setting. For calibrating the setting lever contact a local heating and cooling service person.
Blank Display and/or Keypad Not Responding	Battery or RC wire problem.	Replace batteries and check heat/cool system for proper operation. If a voltage spike occurs use the Reset Operation listed above.