Honeywell SERIE2000 User Manual

Series 2000 Commercial

Microelectronic Thermostat

Contents

Features .................................................................. 3

Programming........................................................... 4

Tr oubleshooting ...................................................... 18

® U.S. Registered Trademark
Copyright © 1996 Honeywell Inc. • All Rights Reserved

1 63-4356—1

63-4356-1

ENTER OCCUPIED
PROGRAM MODE

ENTER UNOCCUPIED
PROGRAM MODE

SET CURRENT DAY OR
PROGRAM DAY

SET OCCUPIED
TEMPERATURE
SETPOINTS

SET UNOCCUPIED
TEMPERATURE
SETPOINTS

AM

Mon

Occupied

System Fan

RETURNS TO
NORMAL
OPERATIONS

SET OVERRIDE
TEMPERATURE
OFFSET AND
ACTIVATE
TEMPORARY
OVERRIDE

ENTER HOLD MODE

Run

Program

Temporary

Occupied

Continuous

Unoccupied

Occupied

Start Time

Set Current

Day/Time

SET CURRENT
DAY AND TIME

Heat

Set Program Set Temperature Change

Unoccupied

Start Time Day

Clear

Start Time

Copy

CLEAR PROGRAM PERIOD

63-4356—1 2

Room

Auto

Occupied

Unoccupied

Temp

System Fan

SELECT
SYSTEM

COPY ONE
PROGRAMMED DAY
TO ANOTHER DAY

OPERATION

Temp

Heat/Cool

Settings

Time/Temp

SELECT FAN
OPERATION

INCREASE
TEMPERATURE
OR TIME SETTING

DECREASE
TEMPERATURE
OR TIME SETTING

CHANGE BETWEEN
HEATING AND
COOLING SETPOINTS

M10256

FEATURES

•Program up to two Occupied and two Unoccupied time periods for each daily schedule.

• Set different schedules for each day of the week.

•Temporary temperature overrides.

•Program copy key.

3 63-4356—1

PROGRAMMING

The keyboard is located behind the thermostat
cover. Sixteen keys are used to set, review and
modify programmed times and temperature settings.
The thermostat display shows day, time, program
period and temperature.

The thermostat can be set for two Occupied and
two Unoccupied times for each day of the week
(28 independent time settings). Temporary Occupied

63-4356—1 4

key provides quick temporary temperature changes
for increased occupant comfort. The Continuous
Unoccupied key provides energy efficient operation
for extend periods of time.

Before starting the program procedure, use the
following chart to organize the program schedule.

Day

Monday

Tuesday

Wednesday

Thursday

Friday

Saturday

Sunday

Occupied

Period 1

Unoccupied

Period 1

5 63-4356—1

Occupied

Period 2

Unoccupied

Period 2

The program has four temperature settings, Occupied
and Unoccupied heat and cool. The thermostat will
operate at the Unoccupied temperature setting
unless the thermostat is programmed. The following
chart shows the default temperature settings.

Occupied

Setpoint

Unoccupied

Setpoint

Control Default Desired Default Desired

Heating 70°F

(21°C)

Cooling 78°F

(25.5°C)

63-4356—1 6

55°F
(13°C)

90°F
(32°C)

Setting Current Day and Time

 Press Set Current Day/Time.

NOTE: On initial power up or after an

extended power loss, 1:00 pm flashes
on the LCD until a key is pressed.

Set Current

Day/Time

Set Program Set Temperature Change

Unoccupied

Occupied

Run

Start Time Day

Start Time

Program

Temporary

Set Current

Occupied

Day/Time

Start Time

Continous

Unoccupied

Time/Temp

Occupied

Unoccupied

Temp

Temp

System Fan

Mon

Heat/Cool

Settings

Clear

Copy

Set Day/Time

PM

M4951B

 Press Day until the current day is displayed.

 Press Run Program.

NOTE: Sun = Sunday, Mon = Monday, Tue =

Tuesday, Wed = Wednesday, Thu =
Thursday, Fri = Friday, Sat = Saturday.

Day

Set Program Set Temperature Change

Unoccupied

Occupied

Run

Start Time Day

Start Time

Program

Temporary

Set Current

Occupied

Day/Time

Start Time

Continous

Unoccupied

Time/Temp

Occupied

Unoccupied

Temp

Temp

Clear

Heat/Cool

Copy

Settings

System Fan

Set Day/Time

Tue

PM

M4952B

 Press increase ▲▲ or decrease ▼▼ key until the

current time is displayed.

NOTE: Tapping the Set Current Day/Time

will change the time in one hour
increments.

Set Program Set Temperature Change

Unoccupied

Occupied

Run

Start Time

Program

Temporary

Set Current

Occupied

Day/Time

Continous

Unoccupied

Start Time Day

Clear
Start Time

Time/Temp

Occupied

Unoccupied

Temp

Temp

Heat/Cool

Copy

Settings

System Fan

Set Day/Time

Tue

PM

M4953B

Run

Program

Set Program Set Temperature Change

Unoccupied

Occupied

Run

Start Time

Program

Temporary

Set Current

Occupied

Day/Time

Continous

Unoccupied

Start Time Day

Clear
Start Time

Time/Temp

Unoccupied

Occupied

Temp

Temp

Copy

System Fan

Mon

Heat/Cool
Settings

Occupied 1

System Fan

Heat

AM

Room

Auto

M4954A

Setting Program Times

 Press Occupied Start Time.

NOTE: Anytime a start time is not required,

press the Clear Start Time.

Set Program

Start Time

Occupied

Start Time

Set Program Set Temperature Change

Unoccupied

Occupied

Run

Start Time Day

Start Time

Program

Temporary

Set Current

Occupied

Day/Time

Start Time

Continous
Unoccupied

Time/Temp

Occupied

Unoccupied

Temp

Temp

System Fan

Mon

Heat/Cool
Settings

Occupied 1

Clear

Copy

7 63-4356—1

AM

M4955A

 Press Day until the desired day is displayed.

Set Program

Start Time

Day

Set Program Set Temperature Change

Occupied

Run

Start Time

Program

Temporary

Set Current

Occupied

Day/Time

Continous
Unoccupied

Unoccupied
Start Time Day

Clear

Start Time

Time/Temp

Occupied

Unoccupied

Temp

Temp

Heat/Cool

Copy

Settings

System Fan

Occupied 1

AM

Wed

M4956A

 Press Occupied Start Time a second time to

set a second Occupied Start Time.

Set Program

Occupied

Start Time

Set Program Set Temperature Change

Unoccupied

Occupied

Run

Start Time Day

Start Time

Program

Temporary

Set Current

Clear

Occupied

Day/Time

Start Time

Continous
Unoccupied

Time/Temp

Occupied

Unoccupied

Temp

Temp

Heat/Cool

Copy

Settings

System Fan

Wed

Occupied 2

Start Time

M4958B

 Press increase ▲ ▲ or decrease ▼ ▼ key until the

desired start time is displayed.

NOTE: The program times are in fifteen

minute intervals. (Example: 8:00,
8:15, 8:30).

Set Program

Start Time

Set Program Set Temperature Change

Occupied

Run

Start Time

Program

Temporary

Set Current

Occupied

Day/Time

Continous
Unoccupied

Unoccupied
Start Time Day

Start Time

Time/Temp

Occupied

Unoccupied

Temp

Temp

Clear

Heat/Cool

Copy

Settings

System Fan

Occupied 1

63-4356—1 8

AM

Wed

M4957A

 Press increase ▲ ▲ or decrease ▼ ▼ key until the

desired start time is displayed.

Set Program

Start Time

Set Program Set Temperature Change

Unoccupied

Occupied

Run

Start Time Day

Start Time

Program

Temporary

Set Current

Occupied

Day/Time

Start Time

Continous
Unoccupied

Time/Temp

Occupied

Unoccupied

Temp

Temp

Clear

Heat/Cool

Copy

Settings

System Fan

Occupied 2

PM

Wed

M4959A

 Press Unoccupied Start Time.

Set Program

Un

Occupied 1

Start Time

PM

Wed

M4960A

Unoccupied

Start Time

Set Program Set Temperature Change

Unoccupied

Occupied

Run

Start Time Day

Start Time

Program

Set Current

Temporary

Day/Time

Start Time

Occupied

Continous
Unoccupied

Time/Temp

Unoccupied

Occupied

Temp

Temp

Clear

Heat/Cool
Settings

Copy

System Fan

 Press increase ▲ ▲ or decrease ▼ ▼ key until the

desired start time is displayed.

Set Program

Set Program Set Temperature Change

Occupied

Run

Start Time

Program

Temporary

Set Current

Occupied

Day/Time

Continous
Unoccupied

Unoccupied
Start Time Day

Clear

Start Time

Time/Temp

Occupied

Unoccupied

Temp

Temp

Heat/Cool

Copy

Settings

System Fan

Occupied 1

Un

Start Time

PM

Wed

M4961A

 Press Unoccupied Start Time a second time to

set a second Unoccupied Start Time.

Set Program

Un

Occupied 2

Start Time

Wed

M4962B

Unoccupied

Start Time

Set Program Set Temperature Change

Occupied

Run

Start Time

Program

Temporary

Set Current

Occupied

Day/Time

Continous

Unoccupied

Unoccupied
Start Time Day

Clear

Start Time

Time/Temp

Occupied

Unoccupied

Temp

Temp

Heat/Cool

Copy

Settings

System Fan

 Press increase ▲ ▲ or decrease ▼ ▼ key until the

desired start time is displayed.

Set Program

Start Time

Set Program Set Temperature Change

Unoccupied

Occupied

Run

Start Time Day

Start Time

Program

Temporary

Set Current

Occupied

Day/Time

Start Time

Continous

Unoccupied

Time/Temp

Occupied

Unoccupied

Temp

Temp

Clear

Heat/Cool

Copy

Settings

Un

System Fan

Occupied 2

PM

Wed

M4963A

Copying a Day

NOTE: The thermostat must be in the program

9 63-4356—1

mode to use the copy feature. Go to step 2
if the thermostat is already in the program
mode.

 Press Occupied Start Time.

Start Time

Occupied

Start Time

Set Program Set Temperature Change

Unoccupied

Occupied

Run

Start Time Day

Start Time

Program

Temporary

Set Current

Clear

Occupied

Day/Time

Start Time

Continous
Unoccupied

Copy

Occupied

Temp

System Fan

Set Program

Time/Temp

Unoccupied

Temp

Tue

Heat/Cool
Settings

Occupied 1

AM

M10255

 Press Day to select the day to be copied if

different from the day displayed.

Set Program

Start Time

Day

Set Program Set Temperature Change

Occupied

Run

Start Time

Program

Temporary

Set Current

Occupied

Day/Time

Continous

Unoccupied

Unoccupied
Start Time Day

Clear

Start Time

Time/Temp

Occupied

Unoccupied

Temp

Temp

Heat/Cool

Copy

Settings

System Fan

Occupied 1

AM

Wed

M4966A

 Press Day until the day to be copied to is

displayed.

Day

Set Program Set Temperature Change

Unoccupied

Occupied

Run

Start Time Day

Start Time

Program

Temporary

Set Current

Occupied

Day/Time

Start Time

Continous

Unoccupied

Time/Temp

Occupied

Unoccupied

Temp

Temp

Clear

Heat/Cool

Copy

Settings

System Fan

Wed Thu

M4968A

 Press Copy.

Copy

63-4356—1 10

Set Program Set Temperature Change

Occupied

Run

Start Time

Program

Temporary

Set Current

Occupied

Day/Time

Continous
Unoccupied

Unoccupied
Start Time Day

Clear

Start Time

Time/Temp

Occupied

Unoccupied

Temp

Temp

Heat/Cool

Copy

Settings

System Fan

Wed

M4967A

 Press Copy.

NOTE: donE will be displayed for two

seconds and then the normal
program display will be shown.

Copy

Set Program Set Temperature Change

Unoccupied

Occupied

Run

Start Time Day

Start Time

Program

Temporary

Set Current

Clear

Occupied

Day/Time

Start Time

Continous
Unoccupied

Time/Temp

Occupied

Unoccupied

Temp

Temp

Heat/Cool
Settings

Copy

System Fan

M4969A

 Repeat steps  through  for all the days

desired.

 Press Run Program.

Run

Program

Set Program Set Temperature Change

Unoccupied

Occupied

Run

Start Time Day

Start Time

Program

Temporary

Set Current

Occupied

Day/Time

Start Time

Continous
Unoccupied

Time/Temp

Unoccupied

Occupied

Temp

Temp

Clear

Copy

System Fan

Mon

Heat/Cool
Settings

Occupied 1

System Fan

Heat

AM

Setting Program Temperature
Setpoints

NOTE: The setpoint temperature range is 40 to

90°F (7 to 31°C) for heating and 45 to 99°F
(9 to 37°C) for cooling.

 Press Occupied Temp.

Occupied

Temp

System Fan

Set Program

Time/Temp

Unoccupied

Temp

Heat/Cool

Occupied

Settings

Room

Auto

M4954A

Occupied

Temp

Set Program Set Temperature Change

Unoccupied

Occupied

Run

Start Time Day

Start Time

Program

Temporary

Set Current

Clear

Occupied

Day/Time

Start Time

Continous
Unoccupied

Copy

 Press increase ▲ ▲ or decrease ▼ ▼ key until the

desired temperature is displayed.

Occupied

Temp

System Fan

Set Program

Time/Temp

Unoccupied

Temp

Heat/Cool
Settings

Occupied

Set Program Set Temperature Change

Unoccupied

Occupied

Run

Start Time Day

Start Time

Program

Temporary

Set Current

Clear

Copy

Occupied

Day/Time

Start Time

Continous
Unoccupied

11 63-4356—1

Setting

Heat

M4970B

Setting

Heat

M4971B

 Press Heat/Cool Settings to change between

heat and cool settings.

Heat/Cool

Settings

Set Program Set Temperature Change

Unoccupied

Occupied

Run

Start Time Day

Start Time

Program

Temporary

Set Current

Occupied

Day/Time

Start Time

Continous
Unoccupied

Set Program

Time/Temp

Occupied

Unoccupied

Temp

Temp

Clear

Heat/Cool

Copy

Settings

System Fan

Occupied

Setting

Cool

M4972A

 Press increase ▲ ▲ or decrease ▼ ▼ key until the

desired temperature is displayed.

Set Program

Set Program Set Temperature Change

Occupied

Run

Start Time

Program

Temporary

Set Current

Occupied

Day/Time

Continous

Unoccupied

Unoccupied
Start Time Day

Start Time

Time/Temp

Occupied

Unoccupied

Temp

Temp

Clear

Heat/Cool

Copy

Settings

System Fan

Occupied

63-4356—1 12

Setting

Cool

M4973B

 Press Unoccupied Temp.

Unoccupied

Temp

Set Program Set Temperature Change

Unoccupied

Occupied

Run

Start Time

Program

Temporary

Set Current

Occupied

Day/Time

Start Time

Continous

Unoccupied

Start Time Day

Clear

Set Program

Time/Temp

Occupied

Unoccupied

Temp

Temp

Heat/Cool
Settings

Copy

System Fan

UnOccupied

Setting

Heat

M4974B

 Press increase ▲ ▲ or decrease ▼ ▼ key until the

desired temperature is displayed.

Setting

Heat

M4975B

Set Program Set Temperature Change

Unoccupied

Occupied

Run

Start Time Day

Start Time

Program

Temporary

Set Current

Clear

Occupied

Day/Time

Start Time

Continous
Unoccupied

Set Program

Time/Temp

Occupied

Unoccupied

Temp

Temp

Heat/Cool

Copy

Settings

UnOccupied

System Fan

 Press Heat/Cool Settings to change between

heat and cool settings.

Heat/Cool

Settings

Set Program Set Temperature Change

Unoccupied

Occupied

Run

Start Time

Program

Temporary

Set Current

Occupied

Day/Time

Continous

Unoccupied

Start Time Day

Clear
Start Time

Set Program

Time/Temp

Occupied

Unoccupied

Temp

Temp

Heat/Cool

Copy

Settings

Un

System Fan

Occupied

Setting

Cool

M4976B

 Press increase ▲ ▲ or decrease ▼ ▼ key until the

desired temperature is displayed.

Set Program Set Temperature Change

Occupied

Run

Start Time

Program

Temporary

Set Current

Occupied

Day/Time

Continous
Unoccupied

Unoccupied
Start Time Day

Clear

Start Time

Set Program

Time/Temp

Occupied

Unoccupied

Temp

Temp

Heat/Cool

Copy

Settings

Un

System Fan

Occupied

Setting

Cool

M4977B

 Press Run Program.

Clearing Program Start Times

 Press Occupied Start Time or Unoccupied

Start Time until the start time to be cleared is
displayed.

Set Program

Start Time

Start Time

AM

AM

Occupied

Start Time

Set Program Set Temperature Change

Unoccupied

Occupied

Run

Start Time Day

Start Time

Program

Temporary

Set Current

Occupied

Day/Time

Start Time

Continous
Unoccupied

Time/Temp

Occupied

Unoccupied

Temp

Temp

System Fan

Mon

Heat/Cool
Settings

Occupied 1

Clear

Copy

 Press Day until the desired day is displayed.

Day

Set Program Set Temperature Change

Unoccupied

Occupied

Run

Start Time

Program

Temporary

Set Current

Occupied

Day/Time

Start Time

Continous

Unoccupied

Start Time Day

Clear

Copy

Occupied

Temp

System Fan

Set Program

Time/Temp

Unoccupied

Temp

Mon

Heat/Cool
Settings

Occupied 1

M4955A

M4978A

Run

Program

Set Program Set Temperature Change

Unoccupied

Occupied

Run

Start Time Day

Start Time

Program

Temporary

Set Current

Occupied

Day/Time

Start Time

Continous
Unoccupied

Time/Temp

Unoccupied

Occupied

Temp

Temp

Clear

Copy

System Fan

Mon

Heat/Cool
Settings

Occupied 1

System Fan

Heat

AM

Room

Auto

M4954A

13 63-4356—1

 Press Clear Start Time.

Set Program

Clear

Start Time

Set Program Set Temperature Change

Occupied

Run

Start Time

Program

Temporary

Set Current

Occupied

Day/Time

Continous

Unoccupied

Unoccupied
Start Time Day

Clear

Start Time

Time/Temp

Occupied

Unoccupied

Temp

Temp

Heat/Cool

Copy

Settings

System Fan

Mon

Occupied 1

Start Time

M4979B

 Repeat steps  through  for all the start

times to be cleared.

 Press Run Program.

Run

Program

Set Program Set Temperature Change

Unoccupied

Occupied

Run

Start Time Day

Start Time

Program

Temporary

Set Current

Occupied

Day/Time

Start Time

Continous
Unoccupied

Time/Temp

Unoccupied

Occupied

Temp

Temp

Clear

Copy

System Fan

Mon

Heat/Cool
Settings

Occupied 1

System Fan

Heat

63-4356—1 14

AM

Room

Auto

M4954A

Temporary Occupied Override

Setting Temperature Offset
for Temporary Override

 Press Occupied Temp.

Occupied

Temp

Set Program Set Temperature Change

Unoccupied

Occupied

Run

Start Time Day

Start Time

Program

Temporary

Set Current

Occupied

Day/Time

Start Time

Continous
Unoccupied

Time/Temp

Occupied

Unoccupied

Temp

Temp

Clear

Heat/Cool

Copy

System Fan

Occupied

Settings

 Press Temporary Occupied.

Temporary

Occupied

Set Program Set Temperature Change

Unoccupied

Occupied

Run

Start Time Day

Start Time

Program

Temporary

Set Current

Clear

Occupied

Day/Time

Start Time

Continous
Unoccupied

Time/Temp

Occupied

Unoccupied

Temp

Temp

Heat/Cool

Copy

Settings

System Fan

Wed

Setting

Heat

M10231

M4980A

 Press increase ▲ ▲ or decrease ▼ ▼ key until the

desired temperature offset is displayed (range
is 0° to 5°F).

Set Program Set Temperature Change

Unoccupied

Occupied

Run

Start Time

Program

Temporary

Set Current

Occupied

Day/Time

Continous

Unoccupied

Start Time Day

Clear
Start Time

Time/Temp

Occupied

Unoccupied

Temp

Temp

Heat/Cool

Copy

Settings

System Fan

M4981A

 Press Run Program.

Run

Program

Set Program Set Temperature Change

Unoccupied

Occupied

Run

Start Time Day

Start Time

Program

Temporary

Set Current

Occupied

Day/Time

Start Time

Continous
Unoccupied

Time/Temp

Unoccupied

Occupied

Temp

Temp

Clear

Copy

System Fan

Mon

Heat/Cool
Settings

Occupied 1

System Fan

Heat

AM

Room

M4954A

Using Temporary Override

 Press Temporary Occupied.

NOTE: The default temperature setting is the

Occupied setpoint.

Temporary

Occupied

Auto

 Press increase ▲ ▲ or decrease ▼ ▼ key to

change the default setting by the offset (range
is 0° to 5°F), if desired.

15 63-4356—1

Set Program Set Temperature Change

Unoccupied

Occupied

Run

Start Time Day

Start Time

Program

Temporary

Set Current

Occupied

Day/Time

Start Time

Continous
Unoccupied

Time/Temp

Occupied

Unoccupied

Temp

Temp

Clear

Heat/Cool

Copy

System Fan

Settings

Override

Heat

Setting

M4982B

NOTE: If the offset is zero, the default

setting changes in one degree incre­ments. If the offset is 1 through 5, the
default setting changes by plus or
minus the offset.

Temporary

Set Program Set Temperature Change

Occupied

Run

Start Time

Program

Temporary

Set Current

Occupied

Day/Time

Continous
Unoccupied

Unoccupied
Start Time Day

Clear

Start Time

Time/Temp

Occupied

Unoccupied

Temp

Temp

Heat/Cool

Copy

Settings

System Fan

System Fan

AM

Wed

Override

Auto

Room

Auto

M4983B

 Press Run Program to cancel the override.

Run

Program

Set Program Set Temperature Change

Unoccupied

Occupied

Run

Start Time Day

Start Time

Program

Temporary

Set Current

Occupied

Day/Time

Start Time

Continous
Unoccupied

Time/Temp

Unoccupied

Occupied

Temp

Temp

Clear

Copy

System Fan

Mon

Heat/Cool
Settings

Occupied 1

System Fan

Heat

63-4356—1 16

AM

Room

Auto

M4954A

Using Continuous Unoccupied

 Press Continuous Unoccupied.

NOTE: The default temperature setting is the

Unoccupied setpoint. The default
appears for five seconds and then the
display shows the room temperature.

Continuous

Unoccupied

Set Program Set Temperature Change

Unoccupied

Occupied

Run

Start Time

Program

Set Current

Temporary

Day/Time

Occupied

Continous

Unoccupied

Start Time Day

Clear

Start Time

Time/Temp

Unoccupied

Occupied

Temp

Temp

Heat/Cool

Settings

Copy

System Fan

 Press increase ▲ ▲ or decrease ▼ ▼ key to

change the default setting, if desired.

Set Program Set Temperature Change

Unoccupied

Occupied

Run

Start Time Day

Start Time

Program

Temporary

Set Current

Occupied

Day/Time

Start Time

Continous

Unoccupied

Clear

Time/Temp

Occupied

Unoccupied

Temp

Temp

Heat/Cool

Copy

Settings

System Fan

Setting

Heat

M4984B

Setting

Heat

M10232A

 Press Heat/Cool Setpoint to change between

heat and cool settings. Use increase ▲ ▲ or
decrease ▼ ▼ key to adjust temperature settings.

 Press Run Program again to cancel the Hold

and to return to the program.

Run

Program

Set Program Set Temperature Change

Unoccupied

Occupied

Run

Start Time Day

Start Time

Program

Temporary

Set Current

Occupied

Day/Time

Start Time

Continous
Unoccupied

Time/Temp

Unoccupied

Occupied

Temp

Temp

Clear

Copy

System Fan

Mon

Heat/Cool
Settings

Occupied 1

System Fan

Heat

AM

M4954A

Room

NOTE: If ▼ or ▲ appear under the tempera-

ture display, it means that both the
heating and cooling setpoints are being
adjusted. Tapping the key will change
both the heat and cool setpoints by
one degree. Press Heat/Cool Settings
after the desired setpoint is reached to
review the settings.

Auto

Set Program Set Temperature Change

Unoccupied

Occupied

Run

Start Time Day

Start Time

Program

Temporary

Set Current

Occupied

Day/Time

Start Time

Continous
Unoccupied

Time/Temp

Occupied

Unoccupied

Temp

Temp

Clear

Heat/Cool

Copy

System Fan

Occupied

Settings

Temporary Setting

Heat

M4987B

Changing Temperature Setpoint Until
Next Program Period

 Press increase ▲ ▲ or decrease ▼ ▼ key until the

desired temperature is displayed.

17 63-4356—1

 Press Run Program to cancel the temporary

setpoint and to return to the program.

Run

Program

Set Program Set Temperature Change

Unoccupied

Occupied

Run

Start Time

Program

Temporary

Set Current

Occupied

Day/Time

Continous

Unoccupied

Start Time Day

Clear

Start Time

Time/Temp

Occupied

Unoccupied

Temp

Temp

Mon

Heat/Cool

Copy

Settings

Occupied 1

System Fan

System Fan

Heat

AM

M4954A

Room

Auto

TROUBLESHOOTING GUIDE

Symptom Action

Display will not come on. • Check if the circuit breaker is tripped—reset the circuit breaker.

Temperature settings will not
change (Example: cannot set
the heating higher or the
cooling lower).

Heating will not come on. • Check if the circuit breaker is tripped—reset the circuit breaker.

63-4356—1 18

• Check if the fuse is blown—replace the fuse.

• Check if the system switch at the equipment is in the Off position—
set to the On position.

• Check wiring between thermostat and HVAC equipment—replace
any broken wires.

• If 24 Vac is present, proceed with troubleshooting.

• Check that the temperature setpoints are:

- heating: 40 to 90°F (7 to 31°C)

- cooling: 45 to 99°F (9 to 37°C).

• Keyboard is locked. Contact the installer.

• Check if the fuse is blown—replace the fuse.

• Check if the system switch at the equipment is in the Off position—
set to On position.

• If 24 Vac is present, proceed with troubleshooting.

• Wait five minutes for the system to respond.

• Set system selection to Heat.

(Continued)

TROUBLESHOOTING GUIDE

Symptom Action

Cooling will not come on. • Check if the circuit breaker is tripped—reset the circuit breaker.

System on indicator
(flame=heat, snowflake=cool)
is displayed, but no warm or
cool air is coming from the
registers.

(Continued)

• Check if the fuse is blown—replace the fuse.

• Check if the system switch at the equipment is in the Off position—
set to On position.

• If 24 Vac is present, proceed with troubleshooting.

• Wait five minutes for the system to respond.

• Set system selection to Cool.

Wait a minute after seeing the flame or snowflake and then check the
registers.

19 63-4356—1

Home and Building Control

Honeywell Inc.
Honeywell Plaza
P.O. Box 524
Minneapolis, MN 55408-0524

Home and Building Control

Honeywell Limited-Honeywell Limitée
155 Gordon Baker Road
North York, Ontario
M2H 2C9

Helping You Control Your World

®

63-4356—1 J.H. Rev. 12-96 Printed in Taiwan R.O.C.

63-4356—1 20

www.honeywell.com/buliding/components