White Rodgers 1F85-277 - Manual (Page 7)

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CONFIGURATION MENU CONFIGURATION MENU CONFIGURATION MENU CONFIGURATION MENU CONFIGURATION MENU
5) Select Energy Management Recovery OFF or ON –
Energy Management Recovery (EMR) causes the thermo-
stat to start heating or cooling early to make the building
temperature reach the program setpoint at the time you
specify. Heating will start 5 minutes early for every 1°
of temperature required to reach setpoint. Cooling allows
more time per degree because it takes longer to reach
temperature.
Example: You select EMR and have your heating program-
med to 65° at night and 70° at 7 AM. If the building temp-
erature is 65° the difference between 65° and 70° is 5°.
Allowing 5 minutes per degree the thermostat setpoint will
change to 70° at 6:35 AM.
6) Fast or Slow Cycle Selection – The factory default setting
is fast cycle, which cycles 1st stage at approximately 1.2°F
and 2nd stage 0.75°F. If you prefer slow cycle, press the
or key to change to SL. The 1st stage and 2nd
stage would be 1.5°F and 1.2°F respectively.
7) Select Compressor Lockout CL OFF or ON – Selecting
CL ON will cause the thermostat to wait 5 minutes before
turning on the compressor if the heating and cooling system
loses power. It will also wait 5 minutes minimum between
cooling and heating cycles. This is intended to help protect
the compressor from short cycling. Some newer compres-
sors already have a time delay built in and do not require
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.
8) Select Backlight Display – The display backlight improves
display contrast in low lighting conditions. When the C
terminal is powered, selecting backlight CdL ON will turn
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, this selection has no effect.
9) Select (Fast) Second Stage ON or OFF – In the run mode,
if the setpoint temperature is manually raised by 3°F (2°C)
or more above the actual temperature with the
, and 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.
10)Select filter replacement run time – The thermostat will
display FLTR after a set time of operation. This is a remind-
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. When “FLTR” is displayed, you
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.
11)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.
12)Select F° or C° Readout – Changes the display readout
to Centigrade or Fahrenheit as required.
13)Selected Auto mode – This control will feature AUTO
changeover mode when AU on is selected (default). Press
the
or keys in the menu mode to defeat the auto
changeover mode (OFF).
14)Limited Heat Range – This feature provides a maximum
setpoint temperature for heat. The default setting is 90°F. It
can be changed between 62°F and 89°F by pressing the
or key.
15)Limited Cool Range – This feature provides a minimum
setpoint temperature for cool. The default setting is 45°F. It
can be changed between 46°F and 82°F by pressing the
or key.
16)Compressor Defeat on Comfort Alert error – By selecting
CAL on (default), the compressor will be locked when any
CA error is detected. The compressor will not be locked
when CA error is detected if CAL is OFF.
17 & 18) Keypad Lockout – This menu selection will display
lock icon ( ) and “OFF” (default, keypad not locked out).
The
and are used to toggle the selection between OFF
and ON (keypad locked out). When the keypad lockout
selection is enabled (ON), and the SYSTEM button is
pressed again, the display will indicate the number “0”
(default, still disabled) in the time digits. The
and are
used to set the combination number from 0 to 999. If a
combination of 0 is selected and the SYSTEM button is
pressed, the menu will be exited and keypad will not be
locked. If 1 to 999 is selected and the SYSTEM button is
pressed, the combination is stored into memory and the
menu is exited. The ( ) will display designating keypad
locked with a valid combination. The SYSTEM button will
operate for 10 seconds after the menu mode is exited to
allow the user to change the mode from OFF to the desired
SYSTEM mode.
While the keypad is locked out, a simultaneous press of
and will enter the configuration menu from any
mode instead of only OFF mode. When the menu is
entered with the keypad lockout feature enabled, the first
menu item displayed is the combination code 0. The
or
keys are used to set the combination unlock number
from 0 to 999. If the unlock number matches exactly with
the combination lock number stored in memory when the
SYSTEM button is pressed, the keypad is unlocked and
the ( ) is removed. If the unlock number does not match
when the SYSTEM button is pressed, the 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.