Owner's Manual
Page 23
...°F (10° to 32°C). No response to Make sure heating and cooling temperatures are correctly installed (see page 19). Most problems can be corrected quickly and easily. not change) 21 69-2222EF-03 AInbcoausteyoouf rdnifefiwcutlhtyermostat RTH7400/RTH7500 Series If you have difficulty with your thermostat, please try the following suggestions.
...°F (10° to 32°C). No response to Make sure heating and cooling temperatures are correctly installed (see page 19). Most problems can be corrected quickly and easily. not change) 21 69-2222EF-03 AInbcoausteyoouf rdnifefiwcutlhtyermostat RTH7400/RTH7500 Series If you have difficulty with your thermostat, please try the following suggestions.