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Honeywell TH8321U1006 Support Question

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Question posted by vchemist on June 16th, 2011

Unit Is Shut Off No Display On The Screen.

My unit has stopped working and the control unit is not displaying.

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Related Honeywell TH8321U1006 Manual Pages

Owner's Manual - Page 1

Operating Manual VisionPRO® TH8000 Series Touchscreen Programmable Thermostat 69-1894EFS-01

Owner's Manual - Page 2

... press touchscreen keys. US Patent No. 6595430, D509151 and other patents pending. BE CAREFUL! Never use sharp instruments, such as a pencil or pen, to the thermostat, always press keys with your fingertip. ENGLISH M29343 This manual covers the following models TH8110U: For 1 Heat/1 Cool systems TH8320U: For up to 3 Heat/2 Cool...

Owner's Manual - Page 3

... program schedules 9 Program schedule overrides 12 Vacation hold 14 Special features 15 Screen lock 16 Screen cleaning 17 Humidity display & control 18 Appendices Battery replacement 20 Advanced functions 21 In case of difficulty 26 Optional remote sensors 28 Limited warranty 29 This thermostat is below 50˚F (10˚C). 1 69-1894EFS-01 CAUTION: EQUIPMENT DAMAGE...

Owner's Manual - Page 4

... has been designed to give you many years of the level you set schedules. • EnergyStar® compliant to -use thermostat. ENGLISH Operating Manual About your heating/cooling expenses. • One-touch temp control overrides program schedule at any time. • Precise comfort control keeps temperature within 1°F of reliable service and touchscreen climate...

Owner's Manual - Page 5

... AThbiosutthyeorumronsetawt tisherremadoysttaot go to bed at 10 pm See pages 10-13 ENGLISH ONE-TOUCH TEMP CONTROL: You can override the program schedule at any time, and manually adjust the temperature...174; TH8000 Series Your new thermostat is pre-programmed and ready to Auto See page 7 3. Select system setting: Preset to energy-saving levels while you're at work or asleep (assumes you wake...

Owner's Manual - Page 6

ENGLISH Operating Manual Quick reference to controls Press day(s) to set program schedule (see page 11) Press to select fan operation (see page 7) ... Schedule Press to adjust temperature settings (see pages 11-14) Press for more options (select models only) SCHED HOLD CLOCK SCREEN MORE Press to override program schedule (see pages 12-14) Press to set clock (see page 6) M29344 Press to lock...

Owner's Manual - Page 7

... AUTO Inside SYSTEM HEAT 6:01 AM 70 Set To Following Schedule Recovery Program schedule on (does not display when off) SCHED HOLD CLOCK SCREEN MORE M29345 Adaptive Intelligent Recovery in effect (see page 15) Other display messages: • Cool On: Cooling system is activated • Heat On: Heating system is activated • Aux...

Owner's Manual - Page 8

... daylight savings time, and stores all date/time information. Note: To change the current week day display, see page 22. 69-1894EFS-01 6 ENGLISH Operating Manual Clock setting Press CLOCK 6:01 AM SCHED HOLD CLOCK SCREEN MORE M29346 Adjust time, then press DONE 6:02 AM DONE CANCEL M29347 To set the current...

Owner's Manual - Page 9

... system. ENGLISH Fan setting VisionPRO® TH8000 Series WED 70 FAN Inside AUTO SYSTEM HEAT 6:01 AM 70 Set To Following Schedule SCHED HOLD CLOCK SCREEN MORE Press FAN M29348 Note: If a fan schedule is on. • Circ: Fan runs randomly, about 35% of the time, not counting any run the...

Owner's Manual - Page 10

... WED 70 FAN Inside AUTO SYSTEM HEAT 6:01 AM 70 Set To Following Schedule SCHED HOLD CLOCK SCREEN MORE M29349 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...

Owner's Manual - Page 17

...wait a few minutes before restarting, to 70°. The message "Recovery" is displayed when the system is activated before 6 am , and the temperature to prevent ...time you set. During the wait time, the message "Wait" is displayed on the indoor temperature. ENGLISH 15 69-1894EFS-01 Special features VisionPRO®...thermostat to "learn" how long the furnace and air conditioner take to ...

Owner's Manual - Page 18

..., no keys function. When the screen is pressed. To lock or unlock the screen, see advanced function 0670 on the screen. When partially locked, the screen displays SCREEN LOCKED for screen lock options M29357 To prevent tampering, the screen can be partially or fully locked. To unlock the screen, press any unlocked key while SCREEN LOCKED appears on page 25...

Owner's Manual - Page 19

Avoid abrasive cleansers. Note: Do not spray any settings. Spray liquids onto a cloth, then use the damp cloth to resume normal operation, or press SCREEN again if you can clean the screen without changing any liquid directly on the thermostat. ENGLISH M29359 17 69-1894EFS-01 After 30 seconds, press DONE to clean the...

Owner's Manual - Page 20

... o(ssetlaetct models) WED 70 FAN AUTO Inside 70 Set To SYSTEM HEAT 6:00 PM Following Schedule 43 Humidity SCHED HOLD CLOCK SCREEN MORE Indoor humidity level M29360 Select models can display the current indoor humidity level. (If an optional outdoor sensor is installed, the outdoor temperature is shown instead of the humidity...

Owner's Manual - Page 21

...-01 ENGLISH VisionPRO® TH8000 Series ADbeohutmyioduifricnaetiwonthceornmtrooslt(astelect models) Press MORE until the humidity screen is displayed 6:00PM SCHED HOLD CLOCK SCREEN MORE Press to set the desired humidity level. The thermostat monitors humidity. When humidity increases, the thermostat runs the air conditioner longer to reduce humidity (up to 3°F below your cooling...

Owner's Manual - Page 25

...0160 Press s/t to daylight savings time. 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 . Press s/t to select an option: ...the new 2007 DST calendar) 23 69-1894EFS-01 Thermostat is non-programmable. 4 Program schedule is on or off: Options: 0 Program schedule is ...

Owner's Manual - Page 27

...") 24 24-hour clock (i.e., "15:30") Screen lock Function 0670 Press s/t to change reminder Function 0520 Options: This feature displays an alert to remind you to choose a screen lock setting (see page 16): Options: 0 Screen is unlocked (fully functional) 1 All functions locked except temperature controls and CANCEL key 2 Screen is fully locked 25 69-1894EFS-01

Owner's Manual - Page 28

... correctly installed (see page 25). Display is blank • Check circuit breaker and reset if necessary. • Make sure power switch at a low level, and brightens when a key is not locked (see page 20). • If thermostat is AC powered, a dim display is battery powered, make sure the thermostat is pressed. 69-1894EFS-01...

Owner's Manual - Page 29

... not respond • Press SYSTEM to set system to Heat. Auto indicates the thermostat is on . • Make sure furnace door is closed securely. • If "Wait" is displayed, the compressor protection timer is following the programmed fan setting. Display shows Fan Auto and On or Auto and Circ at the same time...

Owner's Manual - Page 30

... HOLD CLOCK SCREEN MORE Inside temperature Outside temperature M29367 If an outdoor sensor is installed, the current outdoor temperature is installed, the display shows an ...average of temperature readings from all sensors. If an indoor remote sensor is installed, the display shows the indoor temperature at the location of the sensor. (The internal sensor in the thermostat...