Owner's Manual
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Table of contents About your new thermostat Thermostat features 2 Quick reference to controls 3 Quick reference to display 4 Programming & Operation Set time and day 5 Select system setting 6 Select fan setting 7 Using program schedules 8 Program schedule overrides 11 Compressor protection 13 RTH4300B Programmable Thermostat Appendices Battery replacement 14 In case of difficulty 15 Customer assistance 17 Accessories 17 1-year limited warranty 18 This thermostat is pre-programmed and ready to check settings. Your new thermostat is ready to go . See page 9 to go !
Table of contents About your new thermostat Thermostat features 2 Quick reference to controls 3 Quick reference to display 4 Programming & Operation Set time and day 5 Select system setting 6 Select fan setting 7 Using program schedules 8 Program schedule overrides 11 Compressor protection 13 RTH4300B Programmable Thermostat Appendices Battery replacement 14 In case of difficulty 15 Customer assistance 17 Accessories 17 1-year limited warranty 18 This thermostat is pre-programmed and ready to check settings. Your new thermostat is ready to go . See page 9 to go !
Owner's Manual
Page 4
Operating Manual About your heating/cooling expenses. • Large, clear display is easy to -use, push-button climate control. Features • Separately programmable weekday/weekend schedules. • One-touch temp control overrides program schedule at any time. • Energy Star® compliant to greatly reduce your new thermostat Your new Honeywell thermostat has been designed to give you many years of reliable service and easy-to read. • Displays both room temperature and temperature setting. • Built-in compressor protection.
Operating Manual About your heating/cooling expenses. • Large, clear display is easy to -use, push-button climate control. Features • Separately programmable weekday/weekend schedules. • One-touch temp control overrides program schedule at any time. • Energy Star® compliant to greatly reduce your new thermostat Your new Honeywell thermostat has been designed to give you many years of reliable service and easy-to read. • Displays both room temperature and temperature setting. • Built-in compressor protection.
Owner's Manual
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AQbuoicukt ryeofuerrennecwe tthoecrmonotsrtoalst Temperature adjustment (see page 10-12) Fan Switch (see page 6) • Cool: Cooling system control. • Off: All systems off. • Heat: Heating system control. System switch (see page 7) On: Fan runs continuously. Auto: Fan runs only when heating or cooling system is on. RTH4300B Programmable Thermostat • Set: Press to set time/day/ schedule. • Hold: Press to override programmed temperature control. • Run: Press to resume program schedule.
AQbuoicukt ryeofuerrennecwe tthoecrmonotsrtoalst Temperature adjustment (see page 10-12) Fan Switch (see page 6) • Cool: Cooling system control. • Off: All systems off. • Heat: Heating system control. System switch (see page 7) On: Fan runs continuously. Auto: Fan runs only when heating or cooling system is on. RTH4300B Programmable Thermostat • Set: Press to set time/day/ schedule. • Hold: Press to override programmed temperature control. • Run: Press to resume program schedule.
Owner's Manual
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Operating Manual AQbuoicukt ryeofuerrennecwe tthoedrmisopslatyatscreen Low battery warning (see page 14) Replace Batt Current inside temperature Inside 75 Current program period Wake/Leave/Return/Sleep (see pages 8-9) Wake Wed 6:30 AM Set To 75 Heat On Current day/time (see page 5) Temperature setting (see pages 10-12) System status Cool on: Cooling system is on . Heat on: Heating system is on .
Operating Manual AQbuoicukt ryeofuerrennecwe tthoedrmisopslatyatscreen Low battery warning (see page 14) Replace Batt Current inside temperature Inside 75 Current program period Wake/Leave/Return/Sleep (see pages 8-9) Wake Wed 6:30 AM Set To 75 Heat On Current day/time (see page 5) Temperature setting (see pages 10-12) System status Cool on: Cooling system is on . Heat on: Heating system is on .
Owner's Manual
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Press the SET button, then press s or t to save & exit. Wed Set 6:30 Clock AM Press SET, then select current day. Press RUN to select the day of the week. 3. Set Day 1. Press the SET button, then press s or t to set the clock time. 2. Note: If the display flashes Set Clock, the thermostat will follow your settings for the weekday "Wake" time period until you reset the time and day. ASebtoutht eyotiumr eneawndthdearymostat RTH4300B Programmable Thermostat Press SET, then adjust time.
Press the SET button, then press s or t to save & exit. Wed Set 6:30 Clock AM Press SET, then select current day. Press RUN to select the day of the week. 3. Set Day 1. Press the SET button, then press s or t to set the clock time. 2. Note: If the display flashes Set Clock, the thermostat will follow your settings for the weekday "Wake" time period until you reset the time and day. ASebtoutht eyotiumr eneawndthdearymostat RTH4300B Programmable Thermostat Press SET, then adjust time.
Owner's Manual
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Set SYSTEM switch to control your heating or cooling system, depending on the season. • Cool: Cooling system control. • Off: All systems are off. • Heat: Heating system control. CAUTION: EQUIPMENT DAMAGE HAZARD. Operating Manual ASebloeuctt ytohuersnyetswtetmhesrmetotisntgat The SYSTEM switch can be set to control the heating or cooling system. To prevent possible compressor damage, do not operate cooling system when outdoor temperature is below 50°F (10°C).
Set SYSTEM switch to control your heating or cooling system, depending on the season. • Cool: Cooling system control. • Off: All systems are off. • Heat: Heating system control. CAUTION: EQUIPMENT DAMAGE HAZARD. Operating Manual ASebloeuctt ytohuersnyetswtetmhesrmetotisntgat The SYSTEM switch can be set to control the heating or cooling system. To prevent possible compressor damage, do not operate cooling system when outdoor temperature is below 50°F (10°C).
Owner's Manual
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Use this setting for improved air circulation, or for more efficient air cleaning. ASebloeuctt ytohuerfnanewsetthteinrmg ostat RTH4300B Programmable Thermostat Set the FAN switch to "On," the fan runs continuously. If set to Auto or On. Set FAN switch to choose whether the fan runs continuously or only as needed. In "Auto" mode (the most commonly used setting), the fan runs only when the heating or cooling system is on.
Use this setting for improved air circulation, or for more efficient air cleaning. ASebloeuctt ytohuerfnanewsetthteinrmg ostat RTH4300B Programmable Thermostat Set the FAN switch to "On," the fan runs continuously. If set to Auto or On. Set FAN switch to choose whether the fan runs continuously or only as needed. In "Auto" mode (the most commonly used setting), the fan runs only when the heating or cooling system is on.
Owner's Manual
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... temperature you want overnight (usually an energy-saving level). You can program four time periods each day, with different settings for weekdays and weekends. RETURN 6:00 pm 70 ° Set to the time you leave home and the temperature you want during the evening, until you are away (usually an energy...-saving level). SLEEP 10:00 pm 62 ° Set to the time you go to the time you awaken and the temperature you want during the morning, until bedtime. LEAVE 8:00 am 70 °...
... temperature you want overnight (usually an energy-saving level). You can program four time periods each day, with different settings for weekdays and weekends. RETURN 6:00 pm 70 ° Set to the time you leave home and the temperature you want during the evening, until you are away (usually an energy...-saving level). SLEEP 10:00 pm 62 ° Set to the time you go to the time you awaken and the temperature you want during the morning, until bedtime. LEAVE 8:00 am 70 °...
Owner's Manual
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RTH4300B Programmable Thermostat AEnbeorugtyySotuarr®nseewtttinhgesrmfoorstmataximum cost savings This thermostat is pre-set to adjust times and temperatures of each time period.) Wake (6:00 am) Leave (8:00 am) Return (6:00 pm) Sleep (10:00 pm) Heat (Mon-Fri) ...; [Or cancel period] 70 ° [Or cancel period] 62 ° 83 ° [Or cancel period] 75 ° [Or cancel period] 78 ° We recommend these settings, since they can reduce your heating/cooling expenses by as much as 33%. (See next page to use EnergyStar® program...
RTH4300B Programmable Thermostat AEnbeorugtyySotuarr®nseewtttinhgesrmfoorstmataximum cost savings This thermostat is pre-set to adjust times and temperatures of each time period.) Wake (6:00 am) Leave (8:00 am) Return (6:00 pm) Sleep (10:00 pm) Heat (Mon-Fri) ...; [Or cancel period] 70 ° [Or cancel period] 62 ° 83 ° [Or cancel period] 75 ° [Or cancel period] 78 ° We recommend these settings, since they can reduce your heating/cooling expenses by as much as 33%. (See next page to use EnergyStar® program...
Owner's Manual
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... 6:30 AM Heat Wake MonTueWedThuFri 1. Note: Make sure the thermostat is displayed. 2. Press SET until Set Schedule is set desired temperature. Set To 75 Set Schedule 6:30 AM Heat Wake MonTueWedThuFri Press SET, then set to the system you want to save & exit. Repeat steps 2 and 3 for the next time period (Leave). Note: To cancel an unwanted...
... 6:30 AM Heat Wake MonTueWedThuFri 1. Note: Make sure the thermostat is displayed. 2. Press SET until Set Schedule is set desired temperature. Set To 75 Set Schedule 6:30 AM Heat Wake MonTueWedThuFri Press SET, then set to the system you want to save & exit. Repeat steps 2 and 3 for the next time period (Leave). Note: To cancel an unwanted...
Owner's Manual
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...the next programmed time period begins (see page 8). Note: Make sure the thermostat is set to the system you want to immediately adjust the temperature. To cancel the temporary setting at any time, press RUN. For example, if you leave for the current time... period. Set To 75 6:30 AM Press s or t to turn up the heat early in the morning, it will be lowered later, when you want to cancel temporary setting and resume program schedule. RTH4300B Programmable Thermostat APrboogurtaymousrchnedwutleheorvmeorrsidtaet (temporary) Press to temporarily...
...the next programmed time period begins (see page 8). Note: Make sure the thermostat is set to the system you want to immediately adjust the temperature. To cancel the temporary setting at any time, press RUN. For example, if you leave for the current time... period. Set To 75 6:30 AM Press s or t to turn up the heat early in the morning, it will be lowered later, when you want to cancel temporary setting and resume program schedule. RTH4300B Programmable Thermostat APrboogurtaymousrchnedwutleheorvmeorrsidtaet (temporary) Press to temporarily...
Owner's Manual
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... 70 6:30 AM Press to permanently adjust the temperature. Set To 75 6:30 AM Press HOLD to cancel "Hold" setting and resume program schedule. The "Hold" feature turns off the program schedule and allows you want to cancel "Hold" and resume the program ...(permanent) Press to adjust the thermostat manually, as needed. Note: Make sure the thermostat is set will override the temperature settings for all time periods. This will be maintained 24 hours a day, until you set to the system you to permanently adjust temperature. Whatever temperature you manually change it, or press ...
... 70 6:30 AM Press to permanently adjust the temperature. Set To 75 6:30 AM Press HOLD to cancel "Hold" setting and resume program schedule. The "Hold" feature turns off the program schedule and allows you want to cancel "Hold" and resume the program ...(permanent) Press to adjust the thermostat manually, as needed. Note: Make sure the thermostat is set will override the temperature settings for all time periods. This will be maintained 24 hours a day, until you set to the system you to permanently adjust temperature. Whatever temperature you manually change it, or press ...
Owner's Manual
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... is restarted too soon after shutdown. This feature forces the compressor to the compressor in your air conditioning or heat pump system. ABbuoiltu-tinyocuormnperwestshoerrpmrostetacttion RTH4300B Programmable Thermostat Inside Set To 75 75 6:30 AM Wake Wed Cool On Message flashes until safe restart time has elapsed. During the wait time, the display...
... is restarted too soon after shutdown. This feature forces the compressor to the compressor in your air conditioning or heat pump system. ABbuoiltu-tinyocuormnperwestshoerrpmrostetacttion RTH4300B Programmable Thermostat Inside Set To 75 75 6:30 AM Wake Wed Cool On Message flashes until safe restart time has elapsed. During the wait time, the display...
Owner's Manual
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... the batteries are permanently stored in memory, and do not require battery power. 14 Operating Manual ABbatotuetryyoruerplnaecwemtheenrtmostat Pull at bottom to be reset. All other settings are depleted.
... the batteries are permanently stored in memory, and do not require battery power. 14 Operating Manual ABbatotuetryyoruerplnaecwemtheenrtmostat Pull at bottom to be reset. All other settings are depleted.
Owner's Manual
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...switch at heating & cooling system is on. • Make sure furnace door is set higher than the Inside temperature. • Wait 5 minutes for the system to respond. 15 does not respond • Set system switch to Heat (see page 6). Make sure the temperature is closed securely....8226; Make sure fresh AA alkaline batteries are correctly installed (see page 14). Heating or • Set system switch to Cool (see page 6). In case of difficulty RTH4300B Programmable Thermostat If you have difficulty with your thermostat, please try the following suggestions. Most problems can be...
...switch at heating & cooling system is on. • Make sure furnace door is set higher than the Inside temperature. • Wait 5 minutes for the system to respond. 15 does not respond • Set system switch to Heat (see page 6). Make sure the temperature is closed securely....8226; Make sure fresh AA alkaline batteries are correctly installed (see page 14). Heating or • Set system switch to Cool (see page 6). In case of difficulty RTH4300B Programmable Thermostat If you have difficulty with your thermostat, please try the following suggestions. Most problems can be...
Owner's Manual
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... Cool: 50° to 99°F (10° to display "Set Schedule." 2. "Cool On" or "Heat On" is flashing • Compressor protection feature is not • Set the System switch to Cool, and set to acceptable ranges: settings do not • Heat: 40° to 90°F (4.5° ...to Heat, and set the temperature level above the displayed current room temperature (see page 6). To ...
... Cool: 50° to 99°F (10° to display "Set Schedule." 2. "Cool On" or "Heat On" is flashing • Compressor protection feature is not • Set the System switch to Cool, and set to acceptable ranges: settings do not • Heat: 40° to 90°F (4.5° ...to Heat, and set the temperature level above the displayed current room temperature (see page 6). To ...