Honeywell RTH7400 Support Question
Honeywell RTH7400 Support Question
Find answers below for this question about Honeywell RTH7400.Need a Honeywell RTH7400 manual? We have 1 online manual for this item!
Question posted by schade5 on July 24th, 2012
Blank Display Screen
Thermostat in one part of the house shows a blank display and the cooling system was not operating. I replaced the batteries thinking that was the problem, but it did not change anything, still a blank display. I then swapped a thermostat panel from a different part of the house that was working fine, and it did not seem to make the cooling system operational either, so is it safe to conclude that the problem could be something other than the thermostat? If a thermostat panel is blank and new batteries don't allow any of the data to display, is that an indication that this thermostat is bad and needs replacinig?
Current Answers
Related Honeywell RTH7400 Manual Pages
Owner's Manual - Page 1
Operating Manual
RTH7400/RTH7500 Series
Programmable Thermostat
69-2222EF-03
Owner's Manual - Page 2
This manual covers the RTH7400 and RTH7500 models.
(Pull thermostat from wallplate and turn over to find model number) This thermostat contains a Lithium battery which may apply, See www.dtsc.ca.gov/... material. To prevent possible compressor damage, do not operate cooling system when outdoor temperature is below 50°F (10°C).
Registered Trademark. All rights reserved.
Owner's Manual - Page 3
...4 Quick reference to status display 5
Programming & Operation Clock setting 6 Fan setting 7 System setting 8 Using program schedules 9 Program schedule overrides 13 Auto Changeover 15 Filter reminder 17 Special features 18
RTH7400/RTH7500 Series
Appendices Battery replacement 19 Customer assistance 20 In case of difficulty 21 Limited warranty 23
This thermostat is pre-programmed and...
Owner's Manual - Page 4
...;F of reliable service and climate control. Operating Manual
About your new thermostat
Congratulations! It has been designed to give you many years of the level you set. • Change/check reminder lets you know when to replace furnace filter. • Large display with backlight is easy to -use thermostat.
You've just purchased the world's most...
Owner's Manual - Page 5
... fan setting: Preset to do is set the time and day. This thermostat is ready to Heat To change, see page 8
4.. Then check the settings below and change , see pages 10-14
ONE-TOUCH TEMP CONTROL: You can override the... at work or asleep (assumes you have to Auto To change, see page 7
3.. RTH7400/RTH7500 Series
Your new thermostat is pre-programmed and ready to bed at 6 pm and go to go !
Owner's Manual - Page 7
... inside temperature
RTH7400/RTH7500 Series Current time
Smart Response® Technology in effect (see page 15)
System setting (see page 8)
Mon
75 Recovery System Cool
6:01 AM
Fan Auto
Set to
75
Heat On
System & Fan
Schedule
Clock & Mode
Temperature setting
Fan setting (see page 7)
M28078
Other display messages: • Cool On: Cooling system is...
Owner's Manual - Page 9
Fan setting
Press SYSTEM & FAN
System & Fan
Schedule
Clock & More
M28081
Press FAN to select mode, then press DONE
RTH7400/RTH7500 Series
Press SYSTEM & FAN, then FAN to select fan operation:
• On: Fan is always on. • Auto: Fan runs only when the heating or
cooling system is on. System Heat
System
Fan Auto Fan
Done
M28082
7
69-2222EF-03
Owner's Manual - Page 10
... Auxiliary Heat. Operating Manual
System setting
Press SYSTEM & FAN
System & Fan
Schedule
Clock & More
Press SYSTEM to select mode, then press DONE
M28081
System Heat
System
Fan Auto Fan
69-2222EF-03
Done M28083
Follow steps at left to select system: • Heat: Thermostat controls only the heating system. • Cool: Thermostat controls only...
Owner's Manual - Page 11
... °
Set to program your system for weekdays and weekends.
You can program four time periods each day, with different settings for maximum energy savings.
RTH7400/RTH7500 Series
Save money by setting program schedules
It's easy to the time you leave home and the temperature you want while you are away...
Owner's Manual - Page 12
Operating Manual
Energy saving settings for maximum cost savings
This thermostat is pre-set with energy saving program settings. We recommend these settings, since they can reduce your heating/cooling expenses by as much as...(6:00 am)
Leave (8:00 am)
Return (6:00 pm)
Sleep (10:00 pm)
Heat (Mon-Fri) Cool (Mon-Fri) Heat (Sat-Sun) Cool (Sat-Sun)
70 ° 78 ° 70 ° 78 ° 62 ° 85 ...
Owner's Manual - Page 13
...
7. Repeat steps 3-5 to set Heat temperature for this time period.
6. RTH7400/RTH7500 Series
To adjust program schedules (RTH7400 only)
Press SCHEDULE
System & Fan
Schedule
Clock & More
Press EDIT
Go Back...
Edit
M28084 View
MON TUE WED THU FRI
Go Back
Period
6:00 Wake AM
M28085
Set to set Cool...
Owner's Manual - Page 15
... adjust the temperature. When the timer expires, the program schedule will temporarily override the temperature setting for the current time period. Program schedule override (temporary)
RTH7400/RTH7500 Series
Mon
62
System Heat
System & Fan
Adjust temperature
Temporary Set to
68 6:08 AM Heat On
Fan Auto
Use Schedule
Clock & More
Press...
Owner's Manual - Page 17
... cool setting, the display will also show the thermostat is in Auto, the thermostat automatically selects heating or cooling depending on the same day. Press the system button to show both air conditioning and heating are currently adjusting. When the system mode is raising the cool setting up arrow next to "cool" to select between the cool and heat settings. RTH7400...
Owner's Manual - Page 18
... if the outside temperature drops below 50°F (10°C).
69-2222EF-03
16
Operating Manual
AubtooutCyhoaunrgneeowvetrhermostat
If the cool temperature is lowered to where it gets close to the heat setting, an arrow next to heat will show the thermostat is increasing to maintain a 3-degree separation. Tue
69 1:09PM System Auto Fan Auto...
Owner's Manual - Page 19
...
17
69-2222EF-03
Press DONE to replace your filter. AFibltoeurtryeomuirndnewr thermostat
RTH7400/RTH7500 Series
Press RESET after changing the filter, to restart the timer. Press MORE, then NEXT. 2. To reset the reminder interval before it is time to save and exit. Press RESET after changing filter
Change Filter
70
Set to
6:01 AM 70 Heat...
Owner's Manual - Page 20
... you wake at 6.
Operating Manual
Special features
Smart Response® Technology: This feature allows the thermostat to "learn" how long the furnace and air conditioner take to reach programmed temperature settings, so the temperature is reached at least 3 degrees apart.
The thermostat will come on screen. The message "Recovery" is displayed when the system is...
Owner's Manual - Page 21
... the warning does not appear, you should replace batteries once a year, or before batteries are optional (to provide backup power) if your thermostat was wired to remove from wallplate
M28103
Batteries are depleted.
Install fresh batteries immediately when the LO BATT warning begins flashing. Battery replacement
RTH7400/RTH7500 Series
Grasp thermostat and pull to run on AC power when...
Owner's Manual - Page 23
... are correctly installed (see page 19). Display is blank
• Check circuit breaker and reset if necessary. • Make sure power switch at heating & cooling system is on. • Make sure furnace door is closed securely. • If thermostat is battery powered, make sure fresh AA alkaline
batteries are set to acceptable ranges:
key presses (or...
Owner's Manual - Page 25
...does not cover removal or reinstallation costs. RTH7400/RTH7500 Series
A1-byoeuatr yliomuirtendewwathrrearnmtyostat
Honeywell warrants this product, excluding battery, to you purchased it is shown by ... N., Golden Valley, MN 55422, or whether a replacement product can be sent to be defective or malfunctions, Honeywell shall repair or replace it (at Honeywell's option).
If the product is...
Owner's Manual - Page 29
Mode d'emploi
Série RTH7400/RTH7500
Thermostat programmable
69-2222EF-03
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