Honeywell C User manual

OWNER’S GUIDE

® U.S. Registered Trademark

Patents Pending

T8775A,C The Digital Round™

Non-Programmable

Thermostats

69-1679EF—1 2

Fig. 1. T8775 Thermostat (features and operation).

ROOM

SET

DISPLAYS ROOM

OR SET TEMPERATURE

(T8775C ONLY)

SELECTS

ON/AUTO

(T8775C ONLY)

SELECTS

COOL/OFF/HEAT

SHOWS THAT THE

CURRENT ROOM

TEMPERATURE

IS DISPLAYED.

SHOWS THAT THE

CURRENT

TEMPERATURE

SETTING IS DISPLAYED.

M19470

DISPLAYS AND ADJUSTS

TEMPERATURE SETTING/TURNS

BACKLIGHT ON

3 69-1679EF—1

Setting SYSTEM and FAN Switches (T8775C only)

❑System and Fan settings are controlled by using SYSTEM and

FAN switches located on the top of the thermostat (see Fig. 1).

IMPORTANT

Do not operate the T8775C in cooling mode when the

outdoor temperature is below 50°F (10°C), or damage to

compressor could result.

SET THE SYSTEM SWITCH:

❑Heat: The thermostat controls your heating system.

❑Off: Both heating and cooling systems are off.

❑Cool: The thermostat controls your cooling system.

SET THE FAN SWITCH:

❑Auto: Normal setting for most homes. The fan only runs with

the heating and cooling system.

❑On: The fan runs continuously. Use for improved air

circulation.

Operating Your Thermostat

NOTE: Batteries are not required because the temperature set-

ting is held permanently in memory.

69-1679EF—1 4

Backlit Display

❑The backlight can be turned on by turning the dial, or by

pushing the backlight button as shown in Fig. 1.

Display Temperature Setting

NOTE: Your temperature setting can be set anywhere from

40°F to 90°F (4°C to 32°C) in heating and 45°F to 99°F

(7°C to 37°C) in cooling (T8775C only).

❑Turn the dial one click to display

the current temperature setting.

A indicator points to Set

when the temperature setting is

displayed. If a change to the

temperature setting is not made

within five seconds, the mode

will switch to the room

temperature display.

❑A indicator points to Room

when the room temperature is

displayed.

ROOM

SET

M19489

ROOM

SET

M19490

5 69-1679EF—1

Adjust Temperature Setting

❑To lower the temperature setting, turn the dial

counterclockwise.

❑To raise the temperature setting, turn the dial clockwise.

Troubleshooting Guide

CAUTION

Equipment Damage Hazard.

Can cause permanent damage to compressor or

other equipment.

Do not operate cooling when outside temperature is

below 50°F (10°C).

Allow compressor to remain off for five minutes before

restarting.

See equipment manufacturer instructions.

Heating or cooling does not come on.

❑Make sure that the SYSTEM switch on the thermostat is set to

Heat or Cool (T8775C only).

69-1679EF—1 6

❑In heating, make sure the temperature setting is above the

room temperature and the flame is present in the display.

❑In cooling, make sure the temperature setting is below the

room temperature and a solid snowflake is present in the

display (T8775C only).

NOTE: If a call for cooling is made before the compressor has

been off for five minutes, or if a power interruption

occurs while the compressor is running, the thermostat

will go into a five-minute delay to protect the compres-

sor. The snowflake will flash during this delay.

❑Check the system fuse or circuit breaker and replace or reset if

necessary.

❑Check for air movement at the register.

If you have questions concerning this thermostat, call Honeywell

Customer Care at 1-800-468-1502.

7 69-1679EF—1

69-1679EF—1 J.S. Rev. 6-04 www.honeywell.com/yourhome

Printed in Mexico

Automation and Control Solutions

Honeywell International Inc. Honeywell Limited-Honeywell Limitée

1985 Douglas Drive North 35 Dynamic Drive

Golden Valley, MN 55422 Scarborough, Ontario

M1V 4Z9

® Marque de commerce déposée

aux É.-U. • Brevets en instance

GUIDE DU PROPRIÈTAIRE

69-1679EF—1

Thermostats ronds numèriques,

non programmables The Digital

Round™ T8775A,C

69-1679EF—1 2

Fig. 1. Thermostat T8775 (caractéristiques et

fonctionnement).

ROOM

SET

AFFICHAGE DE LA

TEMPÉRATURE AMBIANTE

OU DU POINT DE CONSIGNE

(T8775C SEULEMENT)

SÉLECTION DE

ON OU AUTO

(T8775C SEULEMENT)

SÉLECTION DE

COOL, OFF OU HEAT

INDIQUE QUE LA

TEMPÉRATURE

AMBIANTE

ACTUELLE EST

AFFICHÉE.

INDIQUE QUE LE POINT

DE CONSIGNE ACTUEL

DE LA TEMPÉRATURE

EST AFFICHÉ.

AFFICHAGE ET RÉGLAGE

DU POINT DE CONSIGNE

OU RÉTROÉCLAIRAGE

MF19470

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