HONEYWELL TH9421C1004 Touch-screen Programmable Thermostat
Touch-screen Programmable Thermostat
U.S. Registered Trademark. US Patent No. 6,208,263; 6,373,376; 6,448,901; 6,595,430; 7,012,927; 7,044,397; D509151 and other patents pending. Copyright © 2008 Honeywell International Inc. All rights reserved.
Installation Guide69-1816EFS-03
For up to 4 Heat/2 Cool systems with Honeywell THM5421C or equivalent.
CAUTION: ELECTRICAL HAZARD. Can cause electrical shock or equipment damage. Disconnect power before beginning installation.
MERCURY NOTICE: If this product is replacing a control that contains mercury in a sealed tube, do not place the old control in the trash. Contact your local waste management authority for instructions regarding recycling and proper disposal.
Must be installed by a trained, experienced technician. Read these instructions carefully. Failure to follow these instructions can damage the product or cause a hazardous condition. This thermostat contains a Lithium battery which may contain Perchlorate material. Perchlorate Material—special handling may apply,
See www.dtsc.ca.gov/hazardouswaste/perchlorate
Installation
The thermostat can be mounted on 2″ x 4″ J box or on drywall or plaster using included wall anchors (drill 3/16″ holes for drywall; 7/32″ holes for plaster).
Connect 1, 2, 3 terminals on the thermostat to 1, 2, 3 terminals on EIM or Zone Panel; see EIM or Zone Panel Installation Guide for wiring diagrams.
Set date/time
U.S. Registered Trademark. US Patent No. 6,208,263; 6,373,376; 6,448,901; 6,595,430; 7,012,927; 7,044,397; D509151 and other patents pending. Copyright © 2008 Honeywell International Inc. All rights reserved.
Installer setup
Setup function Settings & options (factory default in bold)
| 0110 | Zone number | 0
1–9 |
Not zoned
Zone number |
| 0120 | Year | 20 | (2000-2099) |
| (first two digits) | 21 | (2100-2178) | |
| 0130 | Year
(second two digits) |
06 | (2006)
[Other options: 00-99] |
| 0140 | Month | 6 | [Other options: 1-12] |
| 0150 | Date | 15 | [Other options: 1-31] |
| 0160 | Schedule format | 4 | 7-day programming |
| 0 | Non-programmable | ||
| 0165 | Restore Energy | 0 | No |
| Star schedule | 1 | Yes | |
| 0172 | System type | 1 | Conventional |
| 2 | Heat pump | ||
| 3
E |
Heat only (no fan) Auto Discover ** | ||
| 0174 | Cooling compressor stages | 1 | 1 stage of cool
[Other options: 0 or 2 stages, or E] |
| 0176 | Heat or Heat Pump Aux stages | 1 | 1 stage of heat
[Other options: 0, 2 or 3 stages, or E] |
| 0180 | Fan control | 0 | Gas/Oil heat (equipment controls heating fan) |
| (conventional heat) | 1 | Electric furnace (thermostat controls heating fan) | |
| 2
E |
Equipment controls stage 1, thermostat controls stage 2+ Auto Discover ** | ||
| 0190 | Changeover valve | 0 | O/B terminal controls valve in cooling |
| (O/B terminal) | 1 | O/B terminal controls valve in heating | |
| 0200 | Backup heat (Aux & EmHeat) | E
0 |
Auto Discover **
Electric backup heat |
| 1 | Fossil fuel backup heat |
| 0210 | External fossil | 1 | External fossil fuel kit controls backup heat |
| fuel kit | 0 | Thermostat controls backup heat (outdoor sensor required) | |
| 0220 | Stage 1 compressor 1cycle rate | E | Auto Discover **
[Other options: 1 to CPH] |
| 0230 | Stage 2 compressor cycle rate | E | Auto Discover **
[Other options: 1 to 6 CPH] |
| 0240 | Stage 1 heat cycle rate (CPH= cycles per hour) | E | Auto Discover **
[Other options: 1 to 12 CPH] |
| 0250 | Stage 2 stage heat cycle rate (CPH) | E | Auto Discover **
[Other options: 1 to 12 CPH] |
| 0260 | Stage 3 heat cycle rate (CPH) | E | Auto Discover **
[Other options: 1 to 12 CPH] |
| 0280 | Backlight | 0 | Backlight on for approx. 45 seconds after keypress |
| 1 | Backlight always on low intensity, full bright after keypress | ||
| 0300 | Manual/Auto | 0 | Manual (User options: Heat/Cool/Off) |
| changeover | 1 | Automatic (User options: Heat/Cool/Auto/Off) | |
| (System selects heat/cool based on indoor temp.) | |||
| 0310 | Auto changeover deadband | 3 | Heat/cool settings 3°F apart (1.5°C)
[Other options: 2-9 (2°F to 9°F/1°C to 5°C)] |
| 0320 | Temperature display | 0 | Fahrenheit |
| 1 | Celsius | ||
| 0330 | Daylight savings | 2
1 |
Auto-change to daylight savings time (2007 and beyond, for areas that use the new 2007 DST calendar)
Auto-change to daylight savings time (through 2006, and for areas |
|
0 |
that do not use the new 2007 DST calendar) Daylight savings time is turned off | ||
| 0340 | Indoor temp. | 0 | Display temp. at thermostat location only |
| sensor | 1 | Display temp. at indoor sensor location(s) | |
| 2 | Average between thermostat & sensor location(s) | ||
| 0342 | Outdoor temp. sensor | E
0 |
Auto Discover **
None |
| 1 | Remote sensor | ||
| 0345 | Dual fuel heat | 1 | Balance point plus 2°F droop ** |
| pump control | 0 | Balance point only ** | |
| 2 | Balance point/Aux Heat Lockout plus 2°F droop ** | ||
| 0346 | Dual fuel heat | 60 | 60 minutes ** |
| pump upstage to furnace timer | 0 | Off
[Other options: 30, 45 or 75 minutes] |
|
| 0350 | Heat pump compressor lockout | 0 | No compressor lockout **
[Other options: 5 to 60°F (-15°C to 15.5°C)] |
| 0360 | Heat pump auxiliary lockout | 0 | No heat pump auxiliary lockout **
[Other options: 5 to 65°F (-15°C to 18.5°C)] |
| 0365 | Discharge temp. sensor | E
0 |
Auto Discover **
No |
| 1 | Yes | ||
| 0370 | Indoor humidity | 1 | Internal sensor in thermostat |
| sensor | 0
E |
Sensors disabled Auto Discover ** |
| 0372 Indoor humidifica- tion control | E Auto Discover **
0 Off 1 Humidify (no frost protection) 3 Humidify (with frost protection) |
| 0374 Humidifier fan action | 0 Humidify only while fan or heat is on
1 Humidify forces fan on 2 Humidify only when heat is on 3 Humidifier operates independent of fan |
| 0379 Dehumidification control | 0 No dehumidification control
1 Dehumidify with air conditioner 3 Whole house dehumidifier |
| 0383 Over-cooling limit | 3 3°F (1.5°C)
[Other options: 1, 2 (1°F or 2°F/0.5°C to 1.5°C)] |
| 0384 Dehumidification fan action | 0 System fan turns on with dehumidifier
1 Dehumidifier operates independent of fan |
| 0390 Dehumidification away mode | 0 No
1 Yes |
| 0391 Dehum. away mode fan setting | 0 Fan auto
1 Fan always on 2 Fan circulate |
| 0392 Dehum. away mode low limit temp. | 76 Low limit temperature 76°F (24°C)
[Other options: 70°F to 80°F (21°C to 27°C)] |
| 0393 Dehum. away mode temp. setting | 85 Away temperature 85°F (29°C)
[Other options: 70°F to 99°F (21°C to 37°C)] |
| 0394 Away dehumidifica- tion setting | 65 Away humidity level 65%
[Other options: 55% to 70%] |
| 0400 Ventilation control | 0 No ventilation
1 Ventilation always allowed 2 Ventilation not allowed during sleep period |
| 0401 Number of
bedrooms |
2 Two bedrooms
[Other options: 1 to 6] |
| 0402 Size of house | 10 1,000 square feet
[Other options: 11 to 50 (1,100 to 5,000 square feet)] |
| 0403 Ventilation level | 160 CFM (cubic feet per minute)
[Other options: (30 to 195 CFM)] |
| 0404 Max. ventilation
% limit |
50 50% ventilation limit
[Other options: 30% to 60% or 100%] P Meets ASHRAE 62.2 standard F Does not meet ASHRAE 62.2 standard |
| 0405 Ventilation fan action | 1 Ventilation on forces fan on
2 Ventilation does not force fan on |
| 0406 Ventilation in high humidity | 1 On (heat mode only)
0 Off |
| 0500 Furnace filter
change alert |
E Auto Discover ** 7 270-day run time
0 Off 8 365-day run time 1 10-day run time 9 30 calendar days 2 30-day run time 10 60 calendar days 3 60-day run time 11 90 calendar days 4 90-day run time 12 120 calendar days 5 120-day run time 13 180 calendar days 6 180-day run time 14 365 calendar days |
| 0502 Furnace filter
alert options |
0 Timer counts Heat & Cool run time
1 Timer counts Cool run time only |
| 0510 Humidifier pad
change alert * |
E Auto Discover **
0 Off 1 90 calendar days or 30 days run time 2 180 calendar days or 60 days run time 3 365 calendar days or 90 days run time |
| 0520 UV lamp change alert | E Auto Discover **
0 Off 1 365 calendar days (1 year) 2 730 calendar days (2 years) |
| 0530 Adaptive Intelligen Recovery™ | t 1 On **
0 Off |
| 0540 Program periods | 4 4 program periods (Wake, Leave, Return, Sleep)
2 2 program periods (Wake, Sleep) |
| 0580 Compressor off time (min.) | 5 5 minute compressor off time **
[Other options: 0 to 4 minutes] |
| 0600 Heat temperature range stop | 90 Max. heat temperature setting is 90°F (32°C)
[Other options: 40 to 90°F (4°C to 32°C)] |
| 0610 Cool temperature range stop | 60 Min. cool temperature setting is 60°F (15°C)
[Other options: 60-99°F (15°C to 37°C)] |
| 0640 Clock format | 12 12-hour time (i.e., “3:30 pm”)
24 24-hour time (i.e., “15:30”) |
| 0650 Extended fan
timer (heat) |
0 Off
[Other options: Fan runs for 30, 60, 90 or 120 seconds after call for heating ends] |
| 0660 Extended fan
timer (cool) |
0 Off
[Other options: Fan runs for 30, 60, 90 or 120 seconds after call for cooling ends] |
| 0670 Keypad lock | 0 Keypad unlocked (fully functional)
1 Partially locked (access to temperature settings only) 2 Fully locked |
| 0680 Heat temperature control | 2 Standard temperature control (recommended)
1 Choose if room is warmer than set temperature 3 Choose if room does not reach set temperature |
| 0690 Cool temperature control | 2 Standard temperature control (recommended)
1 Choose if room is cooler than set temperature 3 Choose if room does not reach set temperature |
| 0700 Temperature
display offset |
0 Thermostat displays actual room temperature
[Other options: -3°F to +3°F offset (-1.5°C to 1.5°C)] |
| 0701 Humidity
display offset |
0 Thermostat displays actual room humidity
[Other options: -5% to +5% offset] |
| 0710 RESET | 0 No reset
1 Reset installer options & program schedule to factory default (only date and time settings are retained) |
Special function
Auto Discover: Setup functions set to “E” (Auto Discover) will be configured automatically, based on information sent from connected equipment. When using Auto Discover, verify that the discovered value is correct. If it is not, the equipment is not communicating the information, and you must change settings manually. Adaptive Intelligent Recovery (Setup Function 0530): Allows the thermostat to “learn” how long the furnace and air conditioner take to reach programmed temperature settings, so the temperature is reached at the scheduled time. Compressor Protection (Setup Function 0580): Forces the compressor to wait a few minutes before restarting, to prevent damage. During this time, the message “Wait” flashes on the display.
Southern Away Dehumidification Control (Setup Functions 0390-0394): This feature is useful for homes in southern climates. It allows humidity control when the home is unoccupied for long periods during the hot/humid season. You can control temperature (Function 0393) and dehumidification (Function 0394) while away. You can control humidity with a dehumidifier or a cooling system (Function 0379). If a cooling system is used, humidity is controlled by cooling indoor air to the Low Limit Temperature (Function 0392). When the desired humidity is reached, the system will maintain the temperature you select in Function 0393.
Heat Pump Control — Electric Backup (Setup Functions 0350-0360): If an outdoor temperature sensor is installed, select a compressor lockout temperature (Function 0350). Below this temperature, only electric heat operates. Also select an auxiliary lockout temperature (Function 0360). Above this temperature, only the compressor operates. Between these temperatures, both heat sources operate. Heat Pump Control — Fossil Fuel Backup (Setup Function 0345):
Option 0 (Balance point only): If the outdoor temperature is above the balance point (Function 0350), only the compressor operates. Below this temperature, only backup heat operates.
Option 1 (Balance point + 2°F droop): As above, but backup heat is activated if the room temperature drops by 2°F (compressor is deactivated).
Option 2: (Balance point/Aux Heat +2°F droop): Compressor works only above auxiliary lockout temperature, backup heat works only below the balance point, 2°F droop between temperatures. If the temperature is not reached in a reasonable time, set the upstage timer (Function 0346). After the designated time, the compressor will be deactivated and the system will switch to backup heat. Ventilation Control (Setup Functions 0400-0406): If the system includes a self-powered ventilation unit (Function 0400), the home can be ventilated on demand, or ventilated automatically if high humidity is detected while in heating mode (Function 0406).
Installer system test
System test System status Other messages
Error codes
- 027 Faulty thermostat (must be replaced)
- 035 Duplicate thermostat zone detected
- 036 Duplicate UV timer
- 037 Duplicate filter timer
- 038 Duplicate humidifier pad timer
- 039 Duplicate indoor humidity sensor
- 040 Compressor should be running but it is not
- 050 Duplicate outdoor temperature sensor
- 052 Faulty post-coil air discharge sensor
- 053 Faulty outdoor temperature sensor
- 054 Faulty indoor humidity sensor
- 089 Heating/cooling equipment is missing
- 090 Data interface is continuously busy
- 091 Thermostat is not receiving data from other equipment
- 118 Faulty discharge air temperature sensor
- 119 Faulty temperature sensor
- 121 Duplicate post-coil air discharge sensor
Accessories
Please contact your distributor to order replacement parts.
- Outdoor temperature sensor………………………..Part number C7089U1006
- Remote indoor temperature sensor………………Part number C7189U1005
- Discharge air temp. sensor………………………….Part number C7835A1009
- Energy recovery ventilator……………………………Part number ER200B2006
- Heat recovery ventilator………………………………Part number HR200B1005
- Fresh air damper…………………………………………Part number EARD6
- 2-Channel Telephone access module…………..Part number W8735D1009
- 4-Channel Telephone access module…………..Part number W8735D1017
- Bypass flow-through or steam humidifier……..Part number HE265A1007
- UV air purifier………………………………………………Part number UV100E1043
- Cover plate…………………………………………………Part number 32003796-001
- (Use to cover marks left by old thermostats.)
- *Contact your dealer or Honeywell rep for a complete list of compatible products.
Need Help?
For assistance with this product please visit http://yourhome.honeywell.com or call Honeywell Customer Care toll-free at 1-800-468-1502
Automation and Control Solutions
Honeywell International Inc.
1985 Douglas Drive North
Golden Valley, MN 55422
http://yourhome.honeywell.com
Automation and Control Solutions
® U.S. Registered Trademark.
© 2008 Honeywell International Inc.
69-1816EFS—03 M.S. Rev. 06-08
Honeywell Limited-Honeywell Limitée 35 Dynamic Drive Toronto, Ontario M1V 4Z9
Reference
Download manual:
HONEYWELL TH9421C1004 Touch-screen Programmable Thermostat Installation Guide
HONEYWELL TH9421C1004 Touch-screen Programmable Thermostat Installation Guide
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