Ip'fifh, Heat, Cool – Carrier 53DFS250-FS User Manual

Page 2: Auto, M m m, Program on

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Display

□

Setup Indication

Indicates the thermostat is in the programming mode.

See page 4.

Fan Operation Indication — 3 Speed

Fan — indicates constant continuous fan operation,

3 speed indicators appear as:

1 bar ■

= low speed

2 bars il = medium speed
3 bars ill = high speed

When Fan is not lit — indicates the fan is in Auto
mode. The fan will operate at the speed which will
help meet room temperature conditions.

See page 4.

Locked Indication

Locked appears after the right combination of buttons
are pressed, rendering the buttons inoperative.

See page 5.

Start/Stop Indication

Start or Stop appears when programming timer
functions.

See page 3.

Outside Indication

Indicates the temperature displayed is from the
optional outside sensor.

See page 6.

Basic Operation

Select Mode

The

HEAT

setting indicates

the temperature the room has

to reach before the unit wit!

turn on to heat the room.

I if

HEAT

The

COOL

setting indicates

. li ti

Prr:

the temperature the room has

to reach before the unit will

turn on to cool the room.

111

AUTO

will automatically

select heat or cool based on

room temperature demand.

■ . ■

CIOOL

m m M

AUTO

■ HEAT

Program On

will activate the

stored timer operation.

(Occupied and Unoccupied

periods.)

Quick Start

Set the Clock and Go

ProgramOn

MODE

OVERRIDE

iP'fifh

I S» ■

Press the Mode button.
While holding the Mode,

press the Override button

for 2 Seconds to enter Setup

screens.

Press both Mode and

mode

Override buttons as
above to return to
normal operation.

OVERRIDE

During Setup and
Programming:
Pressing the Mode but
ton selects different

flashing items. (Repre

sented in

dark black).

Pressing the Up and
Down buttons will
modify the flashing
selection.

To adjust the

clock or Day use

buttons.

OFF

indicates the system is

turned oft.

Select Desired Temperature

I J “ n ff

«S

*81

I L H Lf y ;'ìr;

OFF

In any mode, adjust the

desired Set Point Temperature

with

ILI

Pressing the up/down buttons in Auto mode will adjust

both

the

heat and cool set point temperatures simultaneously.
Pressing the up/down buttons in Heat or Cool modes will adjust

only the heat or cool set point temperature.

Override

The thermostat is preprogrammed from the factory to

OVERRIDE

operate without the need for further programming. To op
timize the installation of this thermostat, follow the in

( re ft ft

t IL

w y y Pm Slop

o r

structions in the Advanced Setup section, or in the Occu-

unoccupied _

pied/Unoccupied periods section.

r r

COOL

NOTE: The thermostat is not programmed to operate

i'll

HEAT

heat pump systems.

U Jl

t Zi

■

r$ n r.

I C .u U

n • Il

you

ProgramOn

O COOL

Override

If?

During programmed, unoccu
pied periods pressing the
Override button will force the

thermostat into Occupied 1

comfort settings, temporarily.

With each successive push of
the Override button, the over

ride timer will add 30 min
utes, until the maximum of

4 hours is reached. Then the

next press will zero out the

override timer, returning to

unoccupied if there are no

further button presses.
When in Override, the Over

ride icon and the Occupied 1
icon appear on the display.

The time of day clock alter

nates with the time remaining
in override.
During Override, the set
points are adjustable, provid
ed the keypad is not locked.

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