Honeywell RTH6400D Support Question
Honeywell RTH6400D Support Question
Find answers below for this question about Honeywell RTH6400D.Need a Honeywell RTH6400D manual? We have 1 online manual for this item!
Question posted by bweir1974 on November 9th, 2014
Switch Fahrenheit Setting To Celcius
how to switch from Farenheit to Celcius.
Current Answers
Related Honeywell RTH6400D Manual Pages
Owner's Manual - Page 1
Quick Installation Guide
RTH6400 Series
Programmable Thermostat 69-2210EF-03
Owner's Manual - Page 2
Call 1-800-468-1502 for the most common system
We are here to help. It is Easy
Label wires and remove your old thermostat
Install and wire your new thermostat
Set your new thermostat to match your heating/cooling system
- Installation is preset for wiring assistance before returning the thermostat to the store.
69-2210EF-03
ii
Owner's Manual - Page 4
If so, see back cover for proper disposal instructions. Old thermostat
Cover
69-2210EF-03
2
M28099 Leave wallplate in place
Is there a sealed tube containing mercury?
2 Remove Old Thermostat
Remove old thermostat but leave wallplate with wires attached.
Owner's Manual - Page 6
Pull here to remove wallplate from New Thermostat
Remove battery holder. Wallplate
M28343
69-2210EF-03
4 4 Separate Wallplate from new thermostat.
Owner's Manual - Page 7
M2834
Thermostat
M28344
5
69-2210EF-03 5 Insert Quick Reference Card
Insert quick reference card into slot in back of thermostat.
Owner's Manual - Page 10
8 Install Batteries
Install two AA alkaline batteries. Back of thermostat
M28346
69-2210EF-03
8
Owner's Manual - Page 11
9 Install Thermostat onto Wallplate
Install thermostat onto the wallplate on the wall.
M28347
9
69-2210EF-03
Owner's Manual - Page 13
... cooling in the summer, and also runs in reverse in the winter to provide heating.
This thermostat works on 24 volt or 750 mV systems. It will NOT work on page 13 to match your thermostat to your system type or if you 're done! If your system type is... 11 If...
Owner's Manual - Page 15
M28349
Press NEXT to advance to change settings. SETUP
WIRING
ASSISTANCE
M28348
Press s or t to next function.
13
69-2210EF-03
TROUBLESHOOTING
Function
1
Setting
0
Done
Next
Press DONE to exit and save settings.
RTH6400
ASybsotuetmyosuertunpew thermostat
Press and hold the s and FAN buttons until the screen changes (approximately 5 seconds).
Owner's Manual - Page 16
M28351
69-2210EF-03
14
TROUBLESHOOTING
When correct setting is selected, press NEXT to change setting. SETUP
Advanced Installation Guide
Function 1: System type
Press the s or t button... with fan: Gas, oil or electric heating without central air conditioning. (Use this setting if you could turn the fan on and off with a fan switch on your old thermostat.)
Press to display next function.
Owner's Manual - Page 17
...
Press the s or t button to select whether your changeover valve is selected, press NEXT to display next function. M28351
15
69-2210EF-03
When correct setting is used in heating or cooling: NOTE: If Function 2 does not appear, please turn to the next page to continue.
20
Done
Next
M28352
0 Cooling...
Owner's Manual - Page 18
...
TROUBLESHOOTING
Press to display next function. When correct setting is selected, press NEXT to change setting. SETUP
WIRING
Advanced Installation Guide
Function 3: Heating fan... heat: Use this setting if you have a gas or oil heating system (system controls fan operation).
1 Electric heat: Use this setting if you have an electric heating system (thermostat controls fan operation).
M28351...
Owner's Manual - Page 19
... you have a standard gas or oil furnace that is selected, press NEXT to display next function.
M28351
17
69-2210EF-03
TROUBLESHOOTING Press to change setting. SETUP
RTH6400
Function 5: Heating cycle rate
Press the s or t button to select your heating system and optimize its operation: NOTE: If Function 5 does not appear...
Owner's Manual - Page 20
...: Manual/Auto Changeover
Press the s or t button to option 0 if the outside temperature drops below 50ºF (10ºC). CAUTION: To avoid possible compressor damage, set to select Manual or Auto Changeover:
12 0
WIRING
ASSISTANCE
Done
Next
M28355
0 Manual Changeover: (Heat/Off/Cool)
1 Automatic Changeover: (Heat/Off/Cool/Auto) Automatically turns...
Owner's Manual - Page 21
...: See Operating Manual for information on Smart Response® Technology.
SETUP
WIRING
RTH6400
Function 13: Smart Response® Technology
Press the s or t button to change setting. When correct setting is selected, press NEXT to display next function.
Owner's Manual - Page 22
...
AFubnocuttioynou1r4n: eTwemthpermatousrteadt isplay
Press the s or t button to select Fahrenheit or Celsius temperature display:
14 0
Done
Next
0 Fahrenheit temperature display (°F) 1 Celsius temperature display (°C)
M28357
Press to exit and save changes.
When correct setting is selected, press DONE to change setting. M28351
ASSISTANCE
TROUBLESHOOTING
69-2210EF-03
20
Owner's Manual - Page 23
...
Connect O wire to both O and B if you have a heat pump.
Wrap bare end of wire with electrical tape and do not match letters on the thermostat, check the chart below and connect to terminal as shown here (see page 6). SETUP
WIRING
ASSISTANCE
TROUBLESHOOTING
M28418
If wires will be connected to O/B W. Do...
Owner's Manual - Page 24
... Installation Guide
Troubleshooting
If you have difficulty with your heating equipment (see page 14).
Display is set to Cool
heating and cooling equipment
(see page 16). Most problems can be corrected quickly and ... 3: Heating Fan Control to make sure it is set to match your
to match your thermostat, please try the following suggestions. Temperature Make sure heating and cooling...
Owner's Manual - Page 25
... than the Inside
respond
temperature.
• Press SYSTEM button to set system to Cool. "Cool On" or "Heat On" is flashing
•...8226; Press SYSTEM button to set system
cooling system to respond. Make sure the temperature
does not
is set higher than the Inside temperature.
• Check circuit breaker and reset if necessary.
• Make sure power switch at heating & cooling system...
Owner's Manual - Page 26
same time (or • Grasp and pull thermostat away
heat does not from wallplate.
Check to make sure
turn off)
bare wires are not touching each
other (see page 6). Heating system• Check Function 1: System Type to
is running at the
make sure it is set to match your heating and cooling equipment...
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