White Rodgers 1F88-270 Installation Instructions Manual page 7

Heating & air conditioning 5-1-1 programmable/non-programmable, auto changeover, multi-stage/heat pump thermostat

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this feature. Your compressor manufacturer can tell you if

the lockout feature is already present in their system. When

the thermostat compressor time delay occurs it will flash the

setpoint for about five minutes.

6) Select Backlight Display

Select Backlight Display

Select Backlight Display – The display backlight improves

Select Backlight Display

display contrast in low lighting conditions. When the "C"

terminal is powered, selecting backlight CdL ON will keep

the light on continuously. Select backlight OFF will keep

the light on momentarily after any key is pressed. When the

"C" terminal is not powered, the light will be on momentarily

after any key is pressed no matter the backlight is selected

ON or OFF.

7) Select (Fast) Second Stage ON or OFF

Select (Fast) Second Stage ON or OFF – In the run mode,

Select (Fast) Second Stage ON or OFF

if the setpoint temperature is manually raised by 3°F (2°C)

or more above the actual temperature with the

fast second stage feature is enabled, FA ON, the second

stage will energize immediately. With FA OFF, second

stage will not energize until the setpoint temperature is 1°F

or more above actual temperature for more than ten min-

utes.

8) Select filter replacement run time

Select filter replacement run time – The thermostat will

Select filter replacement run time

display "FLTR

FLTR

FLTR" after a set time of operation. This is a remind-

FLTR

er to change or clean your air filter. This time can be set from

0 to 1950 hours in 50 hour increments. A selection of 000

will cancel this feature

will cancel this feature. When "FLTR

will cancel this feature

can clear it by pressing HOLD and RUN at the same time.

This resets the timer and starts counting the hours until the

next filter change. Contact your system manufacturer for a

specific replacement/maintenance interval.

9) Select Temperature Display Adjustment 4 LO to 4 HI

Select Temperature Display Adjustment 4 LO to 4 HI –

Select Temperature Display Adjustment 4 LO to 4 HI

Allows you to adjust the room temperature display up to 4°

higher or lower. Your thermostat was accurately calibrated

at the factory but you have the option to change the display

temperature to match your previous thermostat. The cur-

rent or adjusted room temperature will be displayed on the

left side of the display.

10)Select Temporary Program Override Time

Select Temporary Program Override Time – The thermo-

Select Temporary Program Override Time

stat can hold any temperature you set it to for the amount

of time you select on this option. Your choices are 0:00 to

8:00 hours in 15 minute increments. 0:00 means disable.

Example:

1. You have selected 3:00 hours for the Temporary Pro-

gram Override time period.

2. With the thermostat set to Heat or Cool, press HOLD

for approximately 5 seconds

for approximately 5 seconds until HOLD time (3:00

for approximately 5 seconds

indicating 3 hours) appears as a setting reminder.

3. After releasing the button, "HOLD

blink.

4. Use

to set the temperature to your prefer

ence. The thermostat will maintain this temperature

setting for 3 hours with "HOLD

it is in Temporary Hold. After 3 hours, the thermostat

will go back to the program temperature and "HOLD

will no longer blink or display.

11)Select F° or C° Readout

Select F° or C° Readout – Changes the display readout to

Select F° or C° Readout

Centigrade or Fahrenheit as required.

12)Limited Heat Range

Limited Heat Range – This feature provides a maximum

Limited Heat Range

setpoint temperature for heat. The default setting is 90°F. It

can be changed between 62°F and 89°F by pressing the

key.

, and the

A selection of 000

FLTR

FLTR" is displayed, you

FLTR

HOLD" on the display will

HOLD

HOLD" blinking to remind you

HOLD

HOLD"

HOLD

CONFIGURATION MENU

13)Limited Cool Range

Limited Cool Range – This feature provides a minimum

Limited Cool Range

setpoint temperature for cool. The default setting is 45°F. It

can be changed between 46°F and 82°F by pressing the

key.

14)Compressor Run Time

Compressor Run Time – The total run time in hours of

Compressor Run Time

compressor stage (Y) are displayed in the menu mode. This

menu selection will display the words "COMP RUN TIME

the alpha display one second for each word along with the

total run time (0 to 1999

0 to 1999

0 to 1999) below the alpha display and the

0 to 1999

word HR

HR. Pressing the

compressor run time is displayed, will clear the run time for

the compressor. This feature may be exited by pressing the

RUN key or when 120 seconds has elapsed without

keypad activity. The run times are copied from RAM into

EEPROM every 24 hours.

15)Offset Week End Day

Offset Week End Day

Offset Week End Day – The thermostat may operate at a

different day offset to allow the weekend day programs to

represent other consecutive days during the week. This

menu selection will display the words O/S

display and DAY

DAY

DAY below the alpha display. Also, the current

DAY

offset weekend days will be displayed in the day area.

Pressing the

key will increment the consecutive two days

and the

key will decrement. This feature may be exited

by pressing the RUN PRGM

RUN PRGM

RUN PRGM key or when 120 seconds has

elapsed without keypad activity. The offset weekend days

are copied from RAM into EEPROM every 24 hours.

16 & 17) Keypad Lockout

Keypad Lockout

Keypad Lockout – This menu selection will display

lock

lock ( ) icon. The

lock

and

and display the lock

lock icon and OFF

lock

default) indicating in the time digits to the lock

(keypad locked out). When the keypad lockout function is

enabled (ON

ON), and the SYSTEM key is pressed again, the

display will indicate the number 0 0 0 0 0 (default, still disabled) in

the time digits. The

and

tion number from 0 0 0 0 0 to 999

999

999. "0 0 0 0 0 " will not be a valid combination.

If a combination of 0 0 0 0 0 is selected and the SYSTEM key is

pressed the menu will be exited and keypad lockout will not

be evoked. If 1 to 999

1 to 999

1 to 999 is selected and the SYSTEM key is

1 to 999

pressed again, the combination is locked into non-volatile

memory and the menu is exited. The lock

keypad locked with a valid combination) will display when

the menu is exited. The SYSTEM key will operate for 10

seconds after the menu mode is exited to allow the user to

change the mode from OFF

While the keypad is locked out, a simultaneous press of

and

will enter the menu item from any mode instead of

only OFF

OFF

OFF mode. When the menu is entered with the keypad

OFF

lockout feature enabled, the first menu item displayed is the

combination code 0 0 0 0 0 . The

combination unlock number from 0 0 0 0 0 to 999

number matches exactly with the combination lock number

stored in memory when the SYSTEM key is pressed, the

keypad is unlocked and the lock

unlock number does not match when the SYSTEM key is

pressed, menu is exited and the keypad remains disabled.

To reset the combination code and unlock the keypad if the

code is forgotten, see troubleshooting section.

COMP RUN TIME

COMP RUN TIME" in

COMP RUN TIME

keys at the same time, when

O/S

O/S in the alpha

are used to toggle the function

OFF

OFF (keypad not locked out,

OFF

lock icon and ON

lock

are used to set the combina-

lock icon (to designate

lock

OFF

OFF to the desired system mode.

keys are used to set the

999. If the unlock

999

lock

lock icon is removed. If the

lock

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