Owner's Manual
Page 19
... DONE to reset reminder interval 60 Days Reset Next Done If activated during installation, the furnace filter reminder alerts you when it expires: 1. AFibltoeurtryeomuirndnewr thermostat RTH7400/RTH7500 Series Press RESET after changing the filter, to restart the timer. Press RESET after changing ...filter Change Filter 70 Set to 6:01 AM 70 Heat On System Fan Auto Heat Reset Schedule Clock & More M28089 Press...
... DONE to reset reminder interval 60 Days Reset Next Done If activated during installation, the furnace filter reminder alerts you when it expires: 1. AFibltoeurtryeomuirndnewr thermostat RTH7400/RTH7500 Series Press RESET after changing the filter, to restart the timer. Press RESET after changing ...filter Change Filter 70 Set to 6:01 AM 70 Heat On System Fan Auto Heat Reset Schedule Clock & More M28089 Press...
Owner's Manual
Page 23
No response to Make sure heating and cooling temperatures 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... and easily. temperature will • Cool: 50° to 99°F (10° to 32°C). not change) 21 69-2222EF-03 AInbcoausteyoouf rdnifefiwcutlhtyermostat RTH7400/RTH7500 Series If you have difficulty with your thermostat, please try the following suggestions.
No response to Make sure heating and cooling temperatures 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... and easily. temperature will • Cool: 50° to 99°F (10° to 32°C). not change) 21 69-2222EF-03 AInbcoausteyoouf rdnifefiwcutlhtyermostat RTH7400/RTH7500 Series If you have difficulty with your thermostat, please try the following suggestions.
Owner's Manual
Page 24
...; Press SYSTEM to set system to Heat. Make sure the temperature is set cooling system higher than the Inside temperature. • 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 "Wait" is...
...; Press SYSTEM to set system to Heat. Make sure the temperature is set cooling system higher than the Inside temperature. • 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 "Wait" is...