Owner's Manual
Page 3
... 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 ready to go ! Your new thermostat is ready to check settings. 1 69-2222EF-03
... 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 ready to go ! Your new thermostat is ready to check settings. 1 69-2222EF-03
Owner's Manual
Page 5
... page 8 4.. Program schedules: Preset to energy-saving levels while you're at work or asleep (assumes you have to go ! Set clock See page 6 2.. This thermostat is set the time and day. Select fan setting: Preset to go . All you wake at 6 am, leave at 8 am, return at any time, and... manually adjust the temperature (see pages 13-14). 3 69-2222EF-03 Then check the settings below and change , see page 7 3.. RTH7400/RTH7500 Series Your new thermostat is pre-programmed and ready to do is ready to Auto To change if needed: 1..
... page 8 4.. Program schedules: Preset to energy-saving levels while you're at work or asleep (assumes you have to go ! Set clock See page 6 2.. This thermostat is set the time and day. Select fan setting: Preset to go . All you wake at 6 am, leave at 8 am, return at any time, and... manually adjust the temperature (see pages 13-14). 3 69-2222EF-03 Then check the settings below and change , see page 7 3.. RTH7400/RTH7500 Series Your new thermostat is pre-programmed and ready to do is ready to Auto To change if needed: 1..
Owner's Manual
Page 17
... the thermostat is in climates where both "Auto" and either mode. 15 69-2222EF-03 When the system mode is raising the cool setting up to view/adjust either "Heat" or "Cool" for which temperature setting you are used on the indoor temperature. RTH7400/RTH7500 Series AubtooutCyhoaunrgneeowvetrhermostat... Use this feature in Auto, the thermostat automatically selects heating or cooling depending on the same day.
... the thermostat is in climates where both "Auto" and either mode. 15 69-2222EF-03 When the system mode is raising the cool setting up to view/adjust either "Heat" or "Cool" for which temperature setting you are used on the indoor temperature. RTH7400/RTH7500 Series AubtooutCyhoaunrgneeowvetrhermostat... Use this feature in Auto, the thermostat automatically selects heating or cooling depending on the same day.
Owner's Manual
Page 19
Press RESET. 3. M28090 17 69-2222EF-03 AFibltoeurtryeomuirndnewr thermostat RTH7400/RTH7500 Series Press RESET after changing the filter, to restart the timer. Press MORE, then NEXT. 2. Press RESET after changing filter Change Filter 70 Set to 6:01 ...
Press RESET. 3. M28090 17 69-2222EF-03 AFibltoeurtryeomuirndnewr thermostat RTH7400/RTH7500 Series Press RESET after changing the filter, to restart the timer. Press MORE, then NEXT. 2. Press RESET after changing filter Change Filter 70 Set to 6:01 ...
Owner's Manual
Page 21
Insert 2 fresh AA alkaline batteries M28101 19 69-2222EF-03 Battery replacement RTH7400/RTH7500 Series Grasp thermostat and pull to remove from wallplate M28103 Batteries are depleted. Even if 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 run on AC power when installed. Install fresh batteries immediately when the LO BATT warning begins flashing. The warning flashes about 30 days before leaving home for more than a month.
Insert 2 fresh AA alkaline batteries M28101 19 69-2222EF-03 Battery replacement RTH7400/RTH7500 Series Grasp thermostat and pull to remove from wallplate M28103 Batteries are depleted. Even if 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 run on AC power when installed. Install fresh batteries immediately when the LO BATT warning begins flashing. The warning flashes about 30 days before leaving home for more than a month.
Owner's Manual
Page 23
... and cooling temperatures are correctly installed (see page 19). not change) 21 69-2222EF-03 AInbcoausteyoouf rdnifefiwcutlhtyermostat RTH7400/RTH7500 Series If you have difficulty with your thermostat, please try the following suggestions. 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 • Heat: 40° to 90...
... and cooling temperatures are correctly installed (see page 19). not change) 21 69-2222EF-03 AInbcoausteyoouf rdnifefiwcutlhtyermostat RTH7400/RTH7500 Series If you have difficulty with your thermostat, please try the following suggestions. 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 • Heat: 40° to 90...