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 sydkaero on May 18th, 2011
A/c Is Always On.
I'Ve installed a RTH6400 thermostat. I only have four wires, no yellow and I left the little brigde wire conecting 5 & 6 and installed the yellow to #4 connection. When the heat is on so ia the A/C. The A/C is always on, unless I pull the cuircit breaker. What's the correct wiring set up for my system? I have a gas furnace, A/C and no hot water tank with gas.
Syd
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
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 Call 1-800-468-1502 for the most common system
We are here to help.
Owner's Manual - Page 4
Old thermostat
Cover
69-2210EF-03
2
M28099 Leave wallplate in place
Is there a sealed tube containing mercury?
If so, see back cover for proper disposal instructions. 2 Remove Old Thermostat
Remove old thermostat but leave wallplate with wires attached.
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
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
...thermostat to your system type. *Heat Pump-an air conditioner that provides cooling in the summer, and also runs in reverse in the winter to provide heating.
If your system type is:
q Single Stage Heat...11 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 pump systems or 120/240 Volt systems.
11
69-...
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
...-03
14
TROUBLESHOOTING
SETUP
Advanced 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 provides both heating and cooling.
2 Heating only: Gas, oil or electric...
Owner's Manual - Page 17
...
Done
Next
M28352
0 Cooling changeover 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 the O/B W wire terminal (see page 21). M28351
15
69-2210EF-03 SETUP
WIRING
RTH6400
Function 2: Heat pump changeover valve
Press the s or t button to select whether your...
Owner's Manual - Page 18
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: If Function...
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). ASSISTANCE...
Owner's Manual - Page 19
...less than 90% efficient.
9 Electric furnace: Use this setting 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... that is selected, press NEXT to display next function. 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...
Owner's Manual - Page 20
... 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. NOTE: System maintains a minimum 3ºF difference between heat and cool settings.
SETUP
Advanced Installation Guide
Function 12: Manual/Auto Changeover
Press the...
Owner's Manual - Page 21
... 1
Done
Next
M28356
1 Smart Response® Technology ON 0 Smart Response® Technology OFF
NOTE: See Operating Manual for information on Smart Response® Technology. SETUP
WIRING
RTH6400
Function 13: Smart Response® Technology
Press the s or t button to display next function. Press to change setting.
M28351
ASSISTANCE
TROUBLESHOOTING
19
69-2210EF-03
Owner's Manual - Page 23
...
If wires will be connected to O/B W.
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 ). Do not connect both R and Rc terminals, remove metal jumper (see notes, below and connect to terminal as shown here (see page 6). RTH6400
Wiring
If...
Owner's Manual - Page 24
... set to match your thermostat, please try the following suggestions.
Cannot change
ranges:
• Heat: 40° to 90°F (4.5° to 32°C).
• Cool: 50° to 99°F (10° to Cool
heating and cooling equipment
(see page 14). ASSISTANCE
TROUBLESHOOTING
69-2210EF-03
22 SETUP
WIRING
Advanced Installation Guide
Troubleshooting
If...
Owner's Manual - Page 25
... system to Cool. Make sure the temperature
does not
is set system
cooling system to Heat. Heat pump • Check Function 2: Heat Pump issues cool air Changeover Valve to make sure in system (see page 15).
SETUP
WIRING
Troubleshooting
RTH6400
Heating or
• Press SYSTEM button to set higher than the Inside temperature.
• Check circuit...
Owner's Manual - Page 26
... to match your heating and cooling equipment (see page 14). WIRING
ASSISTANCE
TROUBLESHOOTING
69-2210EF-03
24 Heating system• Check Function 1: System Type to
is running at the
make sure
turn off)
bare wires are not touching each
other (see page 6).
same time (or • Grasp and pull thermostat away
heat does not from wallplate...
Owner's Manual - Page 27
WIRING
ASSISTANCE
TROUBLESHOOTING
25
69-2210EF-03 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.
SETUP
ACbuosutotmyoeur ransseiwsttahnecremostat
RTH6400
For assistance with this product, please ...
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