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 huguessimard300 on April 20th, 2011
How To Connect The 2 Wires From My Existing Thermostat?
I just bought a Honeywell RTH6400 series thermostat but I have problems to connect it. My old 24v thermostat has 2 wires and the terminal shows 6 connectors (C, G, W O/B, Y, R, Rc). where do I have to connect my 2 wires. (Hot water, oil type, no fan system)ThanksHugues
Current Answers
Answer #1: Posted by MagneticPortal on October 26th, 2016 6:14 PM
MagneticPortal
Member since:
September 10th, 2011 Points: 50
Member since:
September 10th, 2011 Points: 50
One wire to R and one wire to W. Then hold the fan button and the up arrow til a service screen appears, setting 1 should be adjusted to 1. Finally gave up searching online for what should have already been in the manual, and called only to sit on hold for ten minutes then asked too many questions for such a simple answer.
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
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 new thermostat to help. It is Easy
Label wires and remove your old thermostat
Install and wire your new thermostat
Set your heating/cooling system
-
Owner's Manual - Page 4
If so, see back cover for proper disposal instructions.
Leave wallplate in place
Is there a sealed tube containing mercury? 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 5
3 Label Wires with Tags
Label the wires using the supplied wire labels as you disconnect them. Wire Labels
M28100
M28093
3
69-2210EF-03
Owner's Manual - Page 6
4 Separate Wallplate from new thermostat. Pull here to remove wallplate from New Thermostat
Remove battery holder.
Wallplate
M28343
69-2210EF-03
4
Owner's Manual - Page 7
5 Insert Quick Reference Card
Insert quick reference card into slot in back of thermostat. M2834
Thermostat
M28344
5
69-2210EF-03
Owner's Manual - Page 9
7 Connect Wires
Simply match wire labels. Have a Heat Pump system? Call 1-800-468-1502 for wiring assistance.
7
69-2210EF-03 Remove metal jumper if you have both R and Rc wires. See page 21. See page 14. We are here to help.
M27513
Labels don't match?
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 15
RTH6400
ASybsotuetmyosuertunpew thermostat
Press and hold the s and FAN buttons until the screen changes (approximately 5 seconds).
SETUP
WIRING
ASSISTANCE
M28348
Press s or t to next function.
13
69-2210EF-03
TROUBLESHOOTING
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
...Installation Guide
Function 1: System type
Press the s or t button to select the type of system you have in your home:
10
WIRING
ASSISTANCE
Done
Next
M28350
0 Heating & cooling: Gas, oil or electric heating with central air conditioning.
1 Heat pump: Outside compressor ... 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
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 the O/B W wire terminal (see... valve: Use this setting if you connected a wire labeled "O" 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 display next function. ...
Owner's Manual - Page 18
M28351
69-2210EF-03
16 SETUP
WIRING
Advanced Installation Guide
Function 3: Heating fan control
Press the s or t button to select your heating system and fan operation...heating system (system controls fan operation).
1 Electric heat: Use this setting if you have an electric heating system (thermostat controls fan operation). When correct setting is selected, press NEXT to display next function.
Owner's Manual - Page 19
... if you have any type of electric heating system.
3 Hot water or high-efficiency furnace: Use this setting if you have a hot water system or a gas furnace of greater than 90% efficiency...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, please turn to the next page to continue.
55
WIRING...
Owner's Manual - Page 21
M28351
ASSISTANCE
TROUBLESHOOTING
19
69-2210EF-03
SETUP
WIRING
RTH6400
Function 13: Smart Response® Technology
Press the s or t button to change setting. Press to select Smart Response® Technology:
13 1
Done
Next
M28356
1 Smart ...
Owner's Manual - Page 23
Do not use . Connect O wire to both O and B if you have a heat pump. 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...
Owner's Manual - Page 24
Most problems can be corrected quickly and easily.
Cannot change...System Type to
system setting make sure it is set to match your
to match your thermostat, please try the following suggestions. Fan does not turn on when heat is required
&#...-2210EF-03
22
SETUP
WIRING
Advanced Installation Guide
Troubleshooting
If you have difficulty with your heating equipment (see page 16)....
Owner's Manual - Page 25
... 5 minutes for the system to restart safely, without damage to make sure in heat mode, it is properly configured for the system to respond.
SETUP
WIRING
Troubleshooting
RTH6400
Heating or
• Press SYSTEM button to set lower than the Inside
respond
temperature.
• Press SYSTEM button to set system to Heat.
"Cool...
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 Check to make sure
turn off)
bare wires are not touching each
other (see page 14). SETUP
Advanced Installation Guide
Troubleshooting
Heating
• Check Function 1: System Type to
and cooling equipment running in...
Owner's Manual - Page 27
...-001 Cover plate assembly Part No. 50002883-001
*Use to cover marks left by old thermostats.
WIRING
ASSISTANCE
TROUBLESHOOTING
25
69-2210EF-03 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. Accessories/replacement parts
To order...
Similar Questions
I Got Honeywell Rth6400d I Would Like To Programed In Celsius
(Posted by joezizic1 2 years ago)
Honeywell Rth6400 Series
I have mine set 4 ways througout the day. 78 for day and at 4:00 pm to change to 75 and 10:00 at nig...
I have mine set 4 ways througout the day. 78 for day and at 4:00 pm to change to 75 and 10:00 at nig...
(Posted by sready6 10 years ago)
What Should Cycle Rate Setting Be For 2 Wire Hot Water Baseboard Using Zone Valv
thermostat model ct87k. I can get the heat to cycle on and off but will not go above 71f no mater if...
thermostat model ct87k. I can get the heat to cycle on and off but will not go above 71f no mater if...
(Posted by connieruss 12 years ago)
How To Connect An Rth111 To A Two Wire Hot Water Boiler Control
I am replacing my old round honeywell thermostat with an RTH111. I hve no a/c just a gas hot water b...
I am replacing my old round honeywell thermostat with an RTH111. I hve no a/c just a gas hot water b...
(Posted by amicus 12 years ago)
A/c Is Always On.
I'Ve installed a RTH6400 thermostat. I only have four wires, no yellow and I left the little brigde ...
I'Ve installed a RTH6400 thermostat. I only have four wires, no yellow and I left the little brigde ...
(Posted by sydkaero 12 years ago)