Honeywell T8524 Thermostat User Manual

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Electronic Heat-Pump Thermostat  
T8501, T8511, T8524  
OWNER’S GUIDE  
69-1629-1  
FEATURES  
Comfort is achieved through matching the correct equipment and controls. This thermostat is  
designed to provide the maximum comfort for your needs. Some of the basic offerings are:  
•
Simple and easy to use. The ▲ and ▲ keys make it easy for you to change your temperature  
setting.  
•
•
Large digital display. You can easily read the current room temperature at a glance.  
No need for batteries. Batteries are not required because your temperature settings are held  
permanently in memory.  
•
Backlit display. Turns on with the touch of any key. Helps you read the display in a dark  
hallway.  
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NOTE: Em.Ht. is available only on T8511 Heat  
Pump models.  
SETTINGS  
Em. Ht.: Setting when your home needs heat,  
but your equipment needs servicing  
or is not working correctly. The  
Setting SYSTEM and FAN Keys  
Change System and Fan settings with System  
and Fan keys inside thermostat door.  
thermostat controls only the backup  
heat. The heat pump is off.  
First set the SYSTEM key:  
Cool: Normal setting for months when your  
home needs air conditioning. Digital  
i
display shows snowflake  
when  
cooling is on.  
System  
System  
Fan  
Off:  
Heat:  
Both heating and cooling are off.  
Normal setting for months when your  
home needs heating. Digital display  
Press to select  
heating or cooling  
equipment.  
Press to select  
heating or cooling  
equipment.  
.
H
t.-H  
E
ma et i rn  
g
e en qc yu i hp em  
a
et inn tg  
OA un t—o —Fan runs cw  
heating or cooling  
equipment operates  
o
n
et ni nuously  
H
Off  
t
—
e
g
h
—
No equipment  
System  
Fan  
Cool—Cooling equipment  
Auto—Thermostat  
automatically selects  
heating and cooling  
equipment.  
Fan  
shows flame  
Auto: Setting for between seasons when  
Select thermostat selects cooling or heating.  
Models)  
when heating is on.  
(
LED INDICATOR ON SELECT T8511 MODELS.  
M20567A  
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Aux. Ht. in the display when the auxiliary  
heating equipment operates.  
Then set the FAN key:  
Auto: Normal setting for most homes.  
Equipment controls the fan.  
On:  
The fan runs continuously. Use for  
improved air circulation and air quality.  
Displaying Temperature Setting  
NOTE: Your temperature setting can be set  
anywhere from 55° to 99°F (13° to  
37°C).  
Emergency Heat (T8511 Heat Pump  
Models Only)  
The Emergency Heat feature allows you to  
turn on the backup heat section of the system  
by moving the System switch to the Em. Ht.  
position. The thermostat shows Em. Ht. in the  
display when the system calls for emergency  
heat.  
The temperature setting and the room  
temperature display separately. Press the ▲  
or ▲ key to change current temperature  
setting. To change between the heat and cool  
setting, press the i key until the setting to  
be changed appears.  
Auxiliary Heat (T8511 Heat Pump  
Models Only)  
Displaying Outdoor Temperature  
(Select Models)  
The auxiliary heaters assist the heat pump  
under normal conditions when low outdoor  
temperature occurs. The thermostat shows  
Pressing the Information i key once shows  
the outdoor temperature when an outdoor  
temperature sensor is installed.  
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. To raise the temperature setting, press  
the ▲ key. When in the cooling mode,  
raising the temperature before you  
leave for work or school also lowers  
your energy costs.  
Changing Temperature Setting  
1
. To lower the temperature setting, press  
the ▲ key. When in the heating mode,  
lowering the temperature at night or  
during the day can lower your energy  
costs.  
CAUTION  
INCREASE  
TEMPERATURE  
SETTING  
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).  
See equipment manufacturer instruc-  
tions.  
DECREASE  
TEMPERATURE  
SETTING  
i
DISPLAY  
TEMPERATURE  
SETTINGS  
(INFORMATION  
Allow compressor to remain off for five  
minutes before restarting.  
KEY)  
M20274  
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TROUBLESHOOTING GUIDE  
Symptom  
Action  
Check that the System key on the thermostat is set to Heat  
or Cool.  
Heating or Cooling does  
not come on.  
Check if the circuit breaker is tripped–reset the circuit breaker.  
Check if the fuse is blown–replace the fuse.  
Check for air movement at the register.  
Check power to the heating or cooling equipment.  
Temperature setting is too  
wram or cool.  
Adjust the temperature by pressing either the ▲ or ▲ key.  
System on indicator  
Wait five minutes after seeing the flame or snowflake and check  
the registers again. If no there is no hot or cool air coming from  
the registers, refer to Heating or Cooling does not come on. If all  
these actions were checked, contact your local heating and  
cooling contractor.  
(
= heat,  
= cool) is  
lit, but no warm or cool air  
is coming from the  
registers.  
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69-1629–1  
LIMITED WARRANTY  
Honeywell warrants this product, excluding battery, to be free from defects in the workmanship or materials, under normal use and service, for a  
period of one (1) year from the date of purchase by the consumer. If, at any time during the warranty period, the product is defective or  
malfunctions, Honeywell shall repair or replace it (at Honeywell’s option) within a reasonable period of time.  
If the product is defective,  
(i) return it, with a bill of sale or other dated proof of purchase, to the retailer from which you purchased it, or  
(ii) package it carefully, along with proof of purchase (including date of purchase) and a short description of the malfunction, and mail it,  
postage prepaid, to the following address:  
Honeywell Return Goods  
Dock 4 MN10-3860  
1885 Douglas Drive North  
Golden Valley, MN 55422  
This warranty does not cover removal or reinstallation costs. This warranty shall not apply if it is shown by Honeywell that the defect or malfunction  
was caused by damage which occurred while the product was in the possession of a consumer.  
Honeywell’s sole responsibility shall be to repair or replace the product within the terms stated above. HONEYWELL SHALL NOT BE LIABLE FOR  
ANY LOSS OR DAMAGE OF ANY KIND, INCLUDING ANY INCIDENTAL OR CONSEQUENTIAL DAMAGES RESULTING, DIRECTLY OR  
INDIRECTLY, FROM ANY BREACH OF ANY WARRANTY, EXPRESS OR IMPLIED, OR ANY OTHER FAILURE OF THIS PRODUCT. Some states  
do not allow the exclusion or limitation of incidental or consequential damages, so this limitation may not apply to you.  
THIS WARRANTY IS THE ONLY EXPRESS WARRANTY HONEYWELL MAKES ON THIS PRODUCT. THE DURATION OF ANY IMPLIED  
WARRANTIES, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, IS HEREBY LIMITED  
TO THE ONE YEAR DURATION OF THIS WARRANTY. Some states do not allow limitations on how long an implied warranty lasts, so the above  
limitation may not apply to you.  
This warranty gives you specific legal rights, and you may have other rights which vary from state to state.  
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If you have any questions concerning this warranty, please write our Honeywell Customer Relations, 1985 Douglas Drive North, Golden Valley, MN  
5
3
5422. In Canada, write Retail Products ON15-02H, Honeywell Limited/Honeywell Limitée,  
5 Dynamic Drive, Scarborough, Ontario M1V 4Z9.  
CUSTOMER ASSISTANCE  
If, after reading this guide, you have any questions concerning the operation of your thermostat, please visit  
www.honeywell.com/yourhome web site or call the information line at 1-800-468-1502.  
For service, contact your local heating and cooling contractor.  
Automation and Control Solutions  
Honeywell International Inc. Honeywell Limited-Honeywell Limitée  
1
985 Douglas Drive North  
35 Dynamic Drive  
Scarborough, Ontario  
M1V 4Z9  
Golden Valley, MN 55422  
Printed in U.S.A. on recycled  
paper containing at least 10%  
post-consumer paper fibers.  
69-1629–1 G.H. Rev. 12-02  
www.honeywell.com/yourhome  

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