White Rodgers 1F90W-71 User Manual

OPERATION GUIDE

5 Day/2 Day Electronic
Digital Thermostat

WHITE-RODGERS

Operator: Save this booklet for future use!

1F90W-71

WHITE-RODGERS

About Your New Thermostat . . .

Your new White-Rodgers 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.

Please read this manual thoroughly before operating or programming your thermostat. If you have
questions, write to us at the address shown on the back cover of this manual.

2

In This Guide . . .

YOUR NEW THERMOSTAT'S

FEATURES ............................................ 4

OPERATING YOUR THERMOSTAT ......... 5

PARTS OF THE THERMOSTAT

The Back Of the Thermostat Body
The Display
The Thermostat Buttons

OPERATING FEATURES

PROGRAMMING YOUR

THERMOSTAT .................................... 19

PLANNING FOR YOUR NEEDS
ENTERING YOUR PROGRAM

Set Current Time and Day
Enter Heating Program
Enter Cooling Program

CHECK YOUR PROGRAMMING

QUESTIONS AND ANSWERS................. 29

Operator: Save this

booklet for future use!

3

YOUR NEW THERMOSTAT’S FEATURES

• Separate 5-day (weekday) and 2-day (week­end) setback programming

• Simultaneous heat and cool program stor­age

• Four separate time/temperature settings per
24-hour period

• Computed Energy Management Recovery
(EMR)

• Automatic changeover (operator-selectable)

• Armchair programming capability

• Backlit LCD displays continuous set point,
time, and room temperature

• 1.5 volt "AA" Energizer® alkaline battery
backup

• Preprogrammed temperature control

• Adjustable cycle times

4

• Compressor short cycle protection

• Programmable blower control

• Blower delay in the cooling cycle

• Audio and visual prompting during opera­tion

• Two hour temperature override

• Manual program override (HOLD tempera­ture)

• "Advance Program" key

• °F/°C convertibility

• Keypad lockout and limited temperature
range (operator-selectable)

• Temperature range 40° to 99°F

• Compatible with Remote Sensor (installer­selectable)

OPERATING YOUR THERMOST AT

Before you begin programming your thermo­stat, you should be familiar with its features and
with the display and the location and operation
of the thermostat buttons. The information in
this section will help you become familiar with
your new thermostat so that you can easily
program it.

Your thermostat consists of two parts: the
thermostat body and the subbase.

CAUTION

!

Remove power from the system at the
circuit breaker/fuse box before remov­ing or attaching the thermostat body.
Equipment damage and/or personal in­jury could occur.

The subbase is attached to the wall, but you can
remove the thermostat body for easy program­ming. To remove the thermostat body from the
subbase, grasp the thermostat body and gently
pull it straight out from the subbase. To attach
the thermostat body, line up the six terminal pins
on the upper section of the thermostat back with
the matching connector on the subbase. Insert

SUBBASE

THERMOSTAT

BODY

5

these, then gently pivot the thermostat body
down to connect the three pin connectors on the
lower portion of the thermostat back. Gently
push until the snap connectors engage. DO
NOT FORCE OR PRY THE THERMOSTAT, as
this may damage the unit.

PARTS OF THE THERMOSTAT

The Back of The Thermostat Body

Turn the thermostat body over. On the back are
the 3 "AA" Energizer® alkaline batteries and the
two option switch groups (A and B).

1. The "AA" Energizer® alkaline batteries pro­vide power to the thermostat when the 24vAC
power is interrupted (for example, when you
remove the thermostat from the wall for

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programming). Fresh batteries will main­tain the stored program for approximately a
year. If power loss is long enough for the
program to be lost, the thermostat will auto­matically return to the factory programmed
temperatures (64°F heating and 82°F cool­ing) when power is restored. You must
reprogram the thermostat if this happens.

If the word BATTERY is flashing in the
display window, the batteries are low and
should be replaced with fresh "AA" Ener­gizer® alkaline batteries.

CAUTION

!

Before removing thermostat from the
wall to replace the batteries, remove
24vAC power from the thermostat at the
breaker/fuse box.

2. You may adjust the option switches for
keypad lockout, limited temperature range,
and automatic changeover from heat to cool
(see OPERATING FEATURES).

6-pin Connector

Batteries

Other than and , the buttons are
located behind the thermostat door. To open the
door, pull the door out from the top, then swing
it down on its hinges.

On the following pages there are brief descrip­tions of the display and the thermostat buttons.

W14 W22

(Group A)

(Group B)

Option Switches

3-pin Connector

BACK OF THERMOSTAT BODY

7

The Display

1

Continuously displays system mode (HEAT,
OFF, COOL, AUTO, HOLD). During pro-

gramming, the program period is displayed
(MOR, DAY, EVE, or NHT).

2

Alternately displays room temperature (F
denotes degrees Fahrenheit and C denotes
degrees Celsius) and time of day (A de­notes AM time and P denotes PM time).

3

Displays the setpoint temperature.

4

5 DAY indicates that the displayed program
is the weekday program. 2 DAY indicates
that the displayed program is the weekend
program.

8

5

The word BATTERY flashes on the display
when the "AA" alkaline batteries are weak
and should be replaced. The word BAT-
TERY is displayed continuously (non-flash­ing) when thermostat is running on battery
power only.

6

FAN ON is displayed when the blower is
operating continuously. FAN AUTO is dis­played during automatic fan operation (when
the blower cycles with the heating or cooling
system).

5 DAY FAN AUTO

SYSTEM

HEAT-OFF-COOL-AUTO

ON - AUTO

FAN

TIME
FWD

TIME

BACK

SET

CLOCK

SET
DAY

VIEW

PRGM

RUN

PRGM

HOLD
TEMP

ADV

PRGM

1 2 3

2 DAY

FAN AUTO FAN ON

4

6

3

5 DAY

4

6

BATTERY

2

5

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The Thermostat Buttons

16

7

Sets the system mode (HEATing, OFF,
COOLing, or AUTOmatic changeover).

8

Selects fan operation (see #6, above). This
button is also used to program the fan to run
continuously during a program period.

9

Runs display forward or backward through
time, day, or anticipation settings during
programming.

10

Used with the

TIME
FWD

and

TIME

BACK

set current time and day of the week.

11

Used during programming to set the day of
the week to be programmed. Also used in

conjunction with the

SET

button to enter

CLOCK

anticipation setting mode.

10

buttons to

12

Used to initiate or review thermostat pro­gramming.

13

Used to start program operation after pro­gramming. Also used to return thermostat
to program operation after being in HOLD
mode.

14

Used to manually override programming to
hold at a selected temperature (when HOLD
is displayed).

15

Used to advance thermostat program to the
next program period (for example, from the
MOR program to the DAY program).

(Red arrow) Raises temperature setting
(99°F or 37°C maximum).

17

(Blue arrow) Lowers temperature setting
(40°F or 4°C minimum).

18

The red indicator light glows whenever heat­ing, cooling, or fan are in operation.

16

17

5 DAY FAN AUTO

TIME

SET

SET
DAY

VIEW

PRGM

RUN

PRGM

7

8

SYSTEM

HEAT-OFF-COOL-AUTO

FAN

ON - AUTO

FWD

TIME

BACK

CLOCK

HOLD
TEMP

ADV

PRGM

18

9

10

121314 15

11

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