Honeywell TH9421 Support Question
Honeywell TH9421 Support Question
Find answers below for this question about Honeywell TH9421.Need a Honeywell TH9421 manual? We have 1 online manual for this item!
Question posted by casey77 on May 12th, 2011
Need Installation Instructions
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Related Honeywell TH9421 Manual Pages
Owner's Manual - Page 2
...thermostat, always press keys with this product please visit http://yourhome.honeywell.com or call Honeywell Customer Care toll-free at 1-800-468-1502
Read and save these instructions... keys. This thermostat contains a Lithium battery which may apply, See www.dtsc.ca.gov/hazardouswaste/perchlorate. For assistance with your fingertip. D509151 and other patents pending. Need Help?
Owner's Manual - Page 3
... preprogrammed and ready to go ! CAUTION: EQUIPMENT DAMAGE HAZARD. See page 2 to check settings. Table of contents
VisionPRO® IAQ
About your new thermostat Programming at a glance 2 Quick reference to controls 3 Quick reference to status display......... 4
Programming & Operation Clock setting 5 Fan setting 6 System setting 7 Energy Star settings 8 Using program ...
Owner's Manual - Page 4
Then check the settings below and change if needed: 1. Select system setting: Preset to Auto See page 6 3. Just set the time and day. Set clock...See page 5 2. Set humification, ... asleep (assumes you wake at 6 am, leave at 8 am, return at 6 pm and go . Operating Manual
About your new thermostat
Your new thermostat is pre-programmed and ready to go to bed at 10 pm See pages 8-11 5.
Owner's Manual - Page 6
...
4
Temperature setting
Program schedule on (does not display when off)
Adaptive Intelligent Recovery in effect (see page 13)
Inside humidity (If an outdoor sensor is installed, the outdoor temperature is shown instead of the humidity level. Operating Manual
Quick reference to status display
Current inside temperature
Current day of week
Fan...
Owner's Manual - Page 9
...
VisionPRO® IAQ
Press the SYSTEM button to select, then press DONE:
• Heat: Thermostat controls only the heating system.
• Cool: Thermostat controls only the cooling system.
• Off: Heating and cooling systems are off. • Auto: Thermostat automatically selects
heating or cooling depending on the indoor temperature. • Em Heat (only...
Owner's Manual - Page 10
This thermostat is pre-set to adjust times and temperatures of each day. We recommend these settings, since they can program four time periods each day, with ...
Owner's Manual - Page 15
... "Wait" is reached at the time you leave the house, press the HOLD button three times to Auto, the thermostat automatically selects heating or cooling depending on screen. Before you set to activate this feature does not work, contact your ... This feature forces the compressor to wait a few minutes before restarting, to control humidity while your installer.)
13
69-1815EFS-06
Owner's Manual - Page 17
..., or press SCREEN again if you require more time for 30 seconds so you can clean the screen without changing any liquid directly on the thermostat. The screen will remain locked for cleaning.
Owner's Manual - Page 18
... HOLD CLOCK SCREEN MORE
Inside temperature
Outside temperature
If an outdoor sensor is installed, the current outdoor temperature is installed, the display shows the indoor temperature at the location of temperature readings from all sensors or an average between the thermostat and the sensor(s).
69-1815EFS-06
16 If an indoor remote sensor...
Owner's Manual - Page 19
... without frosting or fogging windows and without saving changes. Wait at least 1 day before adjusting the frost level again.
Once frost no longer appears, the thermostat will not be displayed.
17
69-1815EFS-06 Humidification control
VisionPRO® IAQ
Set Frost Control & humidity level
32 Inside
DONE
Press to save and...
Owner's Manual - Page 20
...with A/C).
69-1815EFS-06
18
If you don't have a dehumidifier, the thermostat activates the air conditioner to reduce humidity (may cool as much as needed to reduce humidity.
Press DONE to save & exit
CANCEL
Press MORE until... humidity level and operation (Auto or Off). If installed to control a dehumidifier, the thermostat can activate it as 3°F lower than your temperature setting).
Owner's Manual - Page 21
... exit, or press CANCEL to exit without saving changes. To turn off the ventilator, select 0. You can ventilate your home as needed. Ventilation can still be requested by the installer, the thermostat will turn off /on the automatic ventilation only. Auto/Off will ventilate your home at any time: Press MORE until the...
Owner's Manual - Page 24
... change 1 Restore factory default Energy Star settings
Backlight
Function 0280
Options:
Press s/t to turn the program schedule on or off:
Options: 0 Program schedule is off.
Thermostat is non-programmable. 4 Program schedule is lighted:
0 Light on for approx. 45 seconds after keypress 1 Light always on low intensity, full bright after keypress
69...
Owner's Manual - Page 25
...; IAQ
Temperature format (°F/°C)
Function 0320
Press s/t to set the temperature display format:
Options: 0 Fahrenheit 1 Celsius
Daylight savings time on/off
Function 0330
The thermostat is pre-programmed to automatically adjust to daylight savings time (2007 and beyond, for areas that use
the new 2007 DST calendar)
23
69-1815EFS...
Owner's Manual - Page 29
...°F (4.5° to 32°C) • Cool: 50° to 99°F (10° to make sure the thermostat is normal. "Err" appears on page 22 for backlight options.
Your equipment may need service or repair.
27
69-1815EFS-06 In case of difficulty
VisionPRO® IAQ
If you have difficulty with...
Owner's Manual - Page 30
... same time
• This is scheduled for the system to restart safely, without damaging the compressor (see page 6).
69-1815EFS-06
28 Auto indicates the thermostat is on. Make sure the temperature is set
lower than the Inside temperature.
Wait 5 minutes for "On" during this period (see page 13). If Auto...
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