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 mkoch on June 10th, 2012
Temp. Control
i want to control temp. to aproimately 22 degrees c. 24/7 so I have temp. setting on hold.I have the system setting on auto.according to the manual there should be atemp. differential of about 1.65 degrees c. before either heat or cool come on.I have had heat come on while room temp. was showing 22 degrees. can you help me with this?
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
Installation is preset for wiring assistance before returning the thermostat to the store.
69-2210EF-03
ii Call 1-800-468-1502 for the most common system
We are here 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 help.
Owner's Manual - Page 4
If so, see back cover for proper disposal instructions. 2 Remove Old Thermostat
Remove old thermostat but leave wallplate with wires attached.
Leave wallplate in place
Is there a sealed tube containing mercury? Old thermostat
Cover
69-2210EF-03
2
M28099
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
M28347
9
69-2210EF-03 9 Install Thermostat onto Wallplate
Install thermostat onto the wallplate on the wall.
Owner's Manual - Page 13
... also runs in reverse in the winter to your system type or if you 're done!
This thermostat works 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...
Owner's Manual - Page 14
Advanced Installation
System setup 13 Wiring 21 Troubleshooting 22 Customer assistance 25 Limited warranty 26
Owner's Manual - Page 15
SETUP
WIRING
ASSISTANCE
M28348
Press s or t to next function.
13
69-2210EF-03
TROUBLESHOOTING
RTH6400
ASybsotuetmyosuertunpew thermostat
Press and hold the s and FAN buttons until the screen changes (approximately 5 seconds).
M28349
Press NEXT to advance to change settings. Function
1
Setting
0
Done
Next
Press DONE to exit and save settings.
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 to the O/B W wire terminal (see page 21).
1 Heating changeover valve: Use this setting if you connected a wire labeled "O" to the O/B W wire terminal (see page 21)....s or t button to select whether your changeover valve is selected, press NEXT to display next function. When correct setting is used in heating or cooling: NOTE: If Function 2 does not appear, please turn to the next page ...
Owner's Manual - Page 18
... operation: NOTE: If Function 3 does not appear, please turn to the next page to continue.
30
Done
Next
M28353
0 Gas or oil 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).
Owner's Manual - Page 19
... you have a hot water system or a gas furnace of greater than 90% efficiency.
1 Gas/oil steam or gravity system: Use this setting if you have a steam or gravity heat system. M28351
17
69-2210EF-03
TROUBLESHOOTING SETUP
RTH6400
Function 5: Heating cycle rate
Press the s or t button to ...
Owner's Manual - Page 20
...2210EF-03
18 NOTE: System maintains a minimum 3ºF difference between heat and cool settings.
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 on heat or cool based on room temperatures. SETUP
Advanced...
Owner's Manual - Page 23
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). Do not connect both R and Rc terminals, remove metal jumper (see notes, ...
Owner's Manual - Page 24
...set to acceptable
change • Check Function 1: System Type to
system setting make sure it is set to match your
to match your thermostat, please try the following suggestions.
ASSISTANCE
TROUBLESHOOTING
69-2210EF-03
22...when heat is required
• Check Function 3: Heating Fan Control to make sure it is set to Cool
heating and cooling equipment
(see page 7). SETUP
...
Owner's Manual - Page 26
...). same time (or • Grasp and pull thermostat away
heat does not from wallplate. WIRING
ASSISTANCE
TROUBLESHOOTING
69-2210EF-03
24 SETUP
Advanced Installation Guide
Troubleshooting
Heating
• Check... Function 1: System Type to
and cooling equipment running in
make sure it is set to make ...
Owner's Manual - Page 27
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 call Honeywell Customer Care toll-free at 1-800-468-1502. WIRING
ASSISTANCE
TROUBLESHOOTING
25
69-2210EF-03
To save ...
Owner's Manual - Page 30
... authority for instructions regarding recycling and proper disposal. Rev. 08-08 Automation and Control Solutions
Honeywell International Inc. 1985 Douglas Drive North Golden Valley, MN 55422
Honeywell ...pending. © 2008 Honeywell International Inc. 69-2210EF-03 M.S. Contact your old thermostat in the trash if it contains mercury in U.S.A. CAUTION: To avoid possible compressor damage...
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