Carrier Comfort Pro 33CSCNACHP-FC Manual

Carrier Termostat Comfort Pro 33CSCNACHP-FC

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Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.

Catalog No. 04-53330025-01 Printed in U.S.A. Form 33CS-25SO Pg 1 8-11 Replaces: New

Owner’s Manual

Part Number 33CSCNACHP-FC

SAFETY CONSIDERATIONS

Read and follow manufacturer instructions carefully. Fol-

low all local electrical codes during installation. All wiring

must conform to local and national electrical codes. Improper

wiring or installation may damage thermostat.

Recognize safety information. This is the safety alert sym-

bol . When the safety alert symbol is present on equipment

or in the instruction manual, be alert to the potential for person-

al injury.

Understand the signal words DANGER, WARNING, and

CAUTION. These words are used with the safety alert symbol.

DANGER identifies the most serious hazards which will result

in severe personal injury or death. WARNING signifies a haz-

ard which could result in personal injury or death. CAUTION

is used to identify unsafe practices which would result in minor

personal injury or property damage.

GENERAL

Carrier's Comfort Pro non-programmable fan coil three-

speed fan operation thermostats are wall-mounted, low-voltage

thermostats which maintain room temperature by controlling

the operation of a heating and/or air conditioning system. This

fan coil model thermostat is capable of supporting fan coil

heat/cool, or heat only and cool only systems. A variety of fea-

tures are provided including battery operation, separate heating

and cooling set points, auto changeover, keypad lockout, and

backlighting.

OPERATION

Thermostat Button Identification —

The follow-

ing buttons are located on the thermostat display. See Fig. 1 for

button locations.

• FAN (1) — Selects whether the fan operates at low

speed (F1), medium speed (F2), high speed (F3), or auto

(only when needed for heating and cooling when in

unoccupied mode)

• MODE (2) — Selects whether thermostat is set for heat-

ing, cooling, emergency heat, auto (heat and cool as

needed), or off

• UP (3) — Increases the temperature or adjusts the screen

selection up when setting advanced features

• DOWN (4) — Decreases the temperature or adjusts the

screen selection down when setting advanced features

Thermostat On-Screen Indicators — The follow-

ing on-screen indicators can be displayed on the thermostat dis-

play. See Fig. 2 for location of indicators.

• Fan mode - on (F1, F2 and F3) or auto (1)

• Current temperature (2)

• Mode (3)

• Fahrenheit or Celsius units (4)

• Keypad is locked (no padlock means unlocked) (5)

• Battery strength indicator (6)

• Auxiliary heat (not used with this thermostat) (7)

• Current set point (8)

• Second stage is active (cooling or heating if available)

(9)

mode

fan

heat

cool

auto

off

auto

fan

aux heat

set at

actual temp

Fig. 1 — Thermostat Button Identification

a33-9223

heat

cool

auto

off

auto

fan

aux heat

set at

actual temp

Fig. 2 — Thermostat On-Screen Indicators

a33-9222

Comfort™ Pro

Non-Programmable Fan Coil

Commercial Thermostat

Setting Heating and Cooling Temperatures —

The thermostat is installed with the heating set at 68 F and the

cooling set at 78 F. Perform the following procedure to change

the temperature setting:

1. To change the heating temperature, press the mode but-

ton on the left until the screen displays “heat”.

2. Press the up or down button located on the right side of

the display until the desired temperature is reached.

3. To change the cooling temperature, press the mode but-

ton on the left until the screen displays “cool”.

4. Press the up or down button located on the right side of

the display until the desired temperature is reached.

Turning Heating and Cooling System Off —

To use the thermostat to turn the heating and cooling system

off, press the mode button until the display shows “off” in the

upper left corner.

Advanced Programming — The user can customize

two different features on the thermostat, the Fahrenheit or Cel-

sius display and the backlighting of the thermostat.

FAHRENHEIT OR CELSIUS DISPLAY — The thermostat

is preset to display the temperature in degrees Fahrenheit. The

user can change the display to Celsius if desired. To change the

display, perform the following procedure:

1. Press and hold the mode button for about three seconds.

The screen will display a flashing “U1”. Press the mode

button and the letter F will flash.

2. Press the up or down button on the right to change it

from F (Fahrenheit) or C (Celsius).

3. Press the fan button on the left to exit this screen.

BACKLIGHTING — The thermostat can be set to have the

backlighting either off or on. To change the backlighting selec-

tion, perform the following procedure:

1. Press and hold the mode button for about three seconds.

The screen will display “U1” and the letter F or C in the

center.

2. Press the up button once. The display will show a flash-

ing “U2”.

3. Press the mode button again and the On or Off will flash.

4. Press the up or down button located on the right side of

the display to change it from Off to On or On to Off.

5. Press the fan button on the left to exit this screen.

Using the Fan — For three-speed fan coils, there are

three continuous fan speeds. Pressing the fan button cycles

through the following selections, fan low speed (F1), fan medi-

um speed (F2) and fan high speed (F3) or fan auto. The fan will

operate continuously when in F1, F2 or F3. When the fan is in

auto, the fan only runs when the equipment is running.

NOTE: If the thermostat is set up as a two-pipe auto fan coil

system (2A) with electric heat, it has only two relays to drive

the fan speeds so the available fan speeds are either low or

high. The display will show “F1” for low fan speed and “F3”

for high fan speed. For fan coil applications of either two-pipe

cool only or two-pipe auto fan coil systems (2C and 2A), the

fan speed is high when the electric heat is energized regardless

of the user setting.

Auto Changeover — The thermostat displays one of

five modes: heat, cool, Em heat, heat cool (auto mode) and off.

When the mode selection is in auto mode, the system is

allowed to switch from heating to cooling or from cooling to

heating to maintain the temperature set points.

Unlocking the Keypad — The thermostat is locked

when the padlock symbol is shown on the thermostat display.

A locked thermostat will inhibit a user from making adjust-

ments.

The method by which the thermostat is unlocked is config-

ured by the installer. Three unlocking options are available:

1. The user must simultaneously depress the up and down

buttons for 5 seconds.

2. If a set of dashes are displayed, then a four-digit pass code

must be entered by the user.

3. The user must simultaneously depress the up and down

buttons for 5 seconds, and then enter a four-digit pass

code.

Using Emergency Heat — Emergency heat is used

when the heat system cannot keep up with demand. If Emer-

gency Heat has been configured by the installer, it is used if the

primary heat source fails. There is no Emergency Heat option

if the thermostat is configured as a four-pipe system. To set the

thermostat to use emergency heat, press the mode button until

display shows Em Heat in the upper left corner of the display.

Power Outage — If the building loses electricity, the

thermostat will not need to be reprogrammed. The settings are

retained in memory.

TROUBLESHOOTING

There are system error messages that may appear on the

thermostat screen. See text below for possible system error

messages and their meaning.

Space Temperature Sensor Failure — If the

space sensor reads less than –50 F or greater than 150 F for 60

consecutive seconds, the sensor is considered failed.

If the space temperature sensor fails, the Y1 for all fan coil

units and W for fan coil units with Emergency Heat mode set

to On, will turn off. The space temperature display shows "- -"

and the fan will continue to run.

If the space temperature is the average of both the local and

remote sensors and one of the sensors fails, the thermostat con-

trols the valid sensor only. The display alternates every 10 sec-

onds between "- -" for the invalid sensor and the reading from

the valid sensor.

Fan Error — If the thermostat is in the unoccupied mode,

fan auto cannot be changed to continuous fan mode (or F1, F2,

F3). An E7 error message will be displayed in the space tem-

perature digits for three seconds, but the fan selection will not

be changed.

Battery Icon — The battery icon appears on the display

only when the batteries start to lose power. Replace the batter-

ies when one bar is displayed inside the battery shell. If the

thermostat is battery powered and the icon is just a silhouette

with no black bars, the thermostat will slowly lose functions

until it does not work at all.

Changing Batteries — The thermostat can be powered

by the HVAC equipment or by battery power. If there is no

lighting until the user touches a button, it is battery powered.

When the thermostat uses electricity, the batteries (if installed)

take over if the electricity goes out.

When powered by batteries, the thermostat's two AA batter-

ies should last about one year. When the batteries have lost

about one-third of their power, a battery icon shows up on the

display in the upper right corner with two black bars. If two-

thirds of battery power is lost, the battery icon will display one

black bar. As the batteries get weaker, the icon goes down to

one bar and then none. When the battery icon is less than full,

backlight function will be lost. When the batteries are com-

pletely dead, the thermostat will be unusable.

It is recommended that the batteries be replaced at the one

bar level with two AA alkaline batteries. Batteries are located

in the back of the thermostat, so the thermostat will have to be

removed from the wall.

Produkt Specifikationer

Mærke:	Carrier
Kategori:	Termostat
Model:	Comfort Pro 33CSCNACHP-FC

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