Honeywell RTH6400 Support Question
Honeywell RTH6400 Support Question
Find answers below for this question about Honeywell RTH6400.Need a Honeywell RTH6400 manual? We have 1 online manual for this item!
Question posted by boydsr135 on July 3rd, 2013
Temerature Conversion
How do I change the display to read Celsius?
Current Answers
Related Honeywell RTH6400 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. Installation is preset for wiring assistance before returning the thermostat to match your heating/cooling system
- It is Easy
Label wires and remove your old thermostat
Install and wire your new thermostat
Set your new thermostat to the store.
69-2210EF-03
ii
Owner's Manual - Page 4
Leave wallplate in place
Is there a sealed tube containing mercury?
If so, see back cover for proper disposal instructions. Old thermostat
Cover
69-2210EF-03
2
M28099
2 Remove Old Thermostat
Remove old thermostat but leave wallplate with wires attached.
Owner's Manual - Page 6
4 Separate Wallplate from new thermostat. Wallplate
M28343
69-2210EF-03
4
Pull here to remove wallplate from New Thermostat
Remove battery holder.
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
M28347
9
69-2210EF-03 9 Install Thermostat onto Wallplate
Install thermostat onto the wallplate on the wall.
Owner's Manual - Page 13
... on 24 volt or 750 mV systems. It will NOT work on page 13 to match your thermostat to provide heating.
If your system type is:
q Heat Pump* without Backup Heat q Heat Only q Cool Only
Continue with advanced installation
on multi-stage heat ...
Owner's Manual - Page 15
RTH6400
ASybsotuetmyosuertunpew thermostat
Press and hold the s and FAN buttons until the screen changes (approximately 5 seconds). Function
1
Setting
0
Done
Next
Press DONE to next function.
13
69-2210EF-03
TROUBLESHOOTING M28349
Press NEXT to advance to exit and save settings. SETUP
WIRING
ASSISTANCE
M28348
Press s or t to change settings.
Owner's Manual - Page 16
... 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. When correct setting is selected, press NEXT to...
Owner's Manual - Page 17
...-03 SETUP
WIRING
RTH6400
Function 2: Heat pump changeover valve
Press the s or t button to select whether your changeover valve is selected, press NEXT to display next function.
ASSISTANCE
TROUBLESHOOTING
Press to the O/B W wire terminal (see page 21).
1 Heating changeover valve: Use this setting if you connected a wire labeled "B" to change setting. When correct...
Owner's Manual - Page 18
... 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). SETUP
WIRING
Advanced Installation Guide
Function 3: Heating fan control
Press the s or t button to select your heating system and fan operation: NOTE...
Owner's Manual - Page 19
...: Use this setting if you have a standard gas or oil furnace that is selected, press NEXT to display next function. M28351
17
69-2210EF-03
TROUBLESHOOTING
SETUP
RTH6400
Function 5: Heating cycle rate
Press the s or t button to select your heating system and optimize its ...
5 Gas or oil furnace: Use this setting if you have a steam or gravity heat system. Press to change setting.
Owner's Manual - Page 20
...maintains a minimum 3ºF difference between heat and cool settings.
CAUTION: To avoid possible compressor damage, set to change setting. TROUBLESHOOTING
Press to option 0 if the outside temperature drops below 50ºF (10ºC).
M28351
69-...temperatures. SETUP
Advanced Installation Guide
Function 12: Manual/Auto Changeover
Press the s or t button to display next function.
Owner's Manual - Page 21
... 0 Smart Response® Technology OFF
NOTE: See Operating Manual for information on Smart Response® Technology.
M28351
ASSISTANCE
TROUBLESHOOTING
19
69-2210EF-03 SETUP
WIRING
RTH6400
Function 13: Smart Response® Technology
Press the s or t button to display next function. Press to change setting.
Owner's Manual - Page 22
...
69-2210EF-03
20
When correct setting is selected, press DONE to change setting. SETUP
WIRING
Advanced Installation Guide
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...
Owner's Manual - Page 23
RTH6400
Wiring
If labels do not use C, X or B.
Wrap B wire with electrical tape.
21
69-2210EF-03 Wrap bare end of wire with electrical tape and do not match letters on the thermostat, check the chart below ).
Do not connect both R and Rc terminals, remove metal jumper (see notes, below and connect to...
Owner's Manual - Page 24
...make sure it is blank • Make sure fresh AA alkaline batteries are set to acceptable
change • Check Function 1: System Type to
system setting make sure it is set to ...Troubleshooting
If you have difficulty with your thermostat, please try the following suggestions.
Most problems can be corrected quickly and easily.
Display is set to Cool
heating and cooling equipment
(...
Owner's Manual - Page 25
... pump • Check Function 2: Heat Pump issues cool air Changeover Valve to the compressor. cool mode
ASSISTANCE
TROUBLESHOOTING
23
69-2210EF-03
SETUP
WIRING
Troubleshooting
RTH6400
Heating or
• Press SYSTEM button to set system to Cool. "Cool On" or "Heat On" is flashing
• Compressor protection feature is closed securely...
Owner's Manual - Page 27
SETUP
ACbuosutotmyoeur ransseiwsttahnecremostat
RTH6400
For assistance with this product, please visit http://DIYthermostats.honeywell.com or call Honeywell Customer Care toll-free at 1-800-468-1502. Battery holder Part No. 50007072-001 Cover plate assembly Part No. 50002883-001
*Use to cover marks left by old thermostats. Accessories/replacement parts
To order, please...
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