Honeywell T8400 Manual Download | Manualshive

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Summary of Contents for T8400

Page 1: ...Honeywell Thermostat 69 1491 1 ...

Page 2: ...ide you with a more comfortable and convenient living environment Simple and easy to use The and keys make it easy for you to change your temperature setting Large digital display You can easily read the current room temperature at a glance No need forbatteries Batteries are not required because your temperature settings are held perma nently in memory 2 69 1491 1 ...

Page 3: ...e thermostat case Firstsetthe FANswitch Auto Normal setting for most homes In cooling the fan goes off and on with the cooling equipment In heating the fan may start a few minutes after the heating equipment comes on On The fan runs continuously Use for improved air circulation and air quality FAN Auto On I I FAN SWITCH M10273 3 69 1491 1 ...

Page 4: ...f Both heating and cooling are off Heat Normal setting for months when your home needs heating Digital display shows a flame 1_ when heating is on SYSTEM Cool Off Heat I I I J I U J Z SYSTEM SWITCH M14228 IMPORTANT Do not operate the T8400 and T8401 in cooling mode when the outdoor temperature is below 50 F 10 C or damage to compressor could result 4 69 1491 1 ...

Page 5: ...ture setting and the room temperature are shown separately on the digital display The indicator points to Set when the temperature setting is displayed and to Room when the room temperature is displayed 1 To display the temperature setting on the digital display press either the or key once _DICATOR M18441 5 69 1491 1 ...

Page 6: ...ing mode lowering the temperature at night or during the day can lower your energy costs Set Room M18442 2 To raise the temperature setting press the key When in the cooling mode raising the temperature before you leave for work or school also lowers your energy costs Set Room M18443 6 69 1491 1 ...

Page 7: ...r to manufacturer s recommendations Heating or cooling does not come on Check power to the heating or cooling equipment For compressor protection on initial startup and during power interruptions the T8400 and T8401 Electronic Thermostats go into a five minute delay During this delay the cooling icon a snowflake _ flashes Check that the SYSTEM switch on the thermostat is set to Heat or Cool 7 69 1...

Page 8: ...have questions concerning this thermostat call Honeywell Customer Assistance at 1 800 468 1502 Honeywell Automation and Control Solutions Honeywell 1985 Douglas Drive Norlh Golden Valley MN 55422 Honeywell Limited Honeywell LimiVSe 35 Dynamic rive Scarborough Ontario M IV 4Z9 69 1491 1 G H Rev 11 02 Printed in U S A Copyright 2002 Honeywell All Rights Reserved _ U S Registered Trademark www honeyw...

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