Emerson 1F85-0422 Operations Instructions download pdf (Page 6)

OPERATING YOUR THERMOSTAT IMPORTANT!

Choose the Fan Setting (Auto or On)

Set the FAN Switch to Auto or On.

Fan Auto is the most commonly selected setting and runs the

fan only when the heating or cooling system is on.

Fan On runs the fan continuously for increased air circulation

or to allow additional air cleaning.

Choose the System Setting

(Heat, Off, Cool, Auto, Emer)

Press the SYSTEM button to select:

Heat: Thermostat controls only the heating system.

Off: Heating and Cooling systems are off.

Cool: Thermostat controls only the cooling system.

Auto: Auto Changeover is used in areas where both heating

and cooling may be required on the same day. AUTO allows

the thermostat to automatically select heating or cooling

depending on the indoor temperature and the selected heat

and cool temperatures. When using AUTO, be sure to set the

Cooling temperatures more than 1° Fahrenheit higher than

the heating temperature.

Emer: (Heat Pump models) Thermostat controls only backup

heating system.

Manual Operation for Non-Programmable

Mode

Press the SYSTEM button to select Heat or Cool and use

the

or buttons to adjust the temperature to your

desired setting. After selecting your desired settings you can

also press the SYSTEM button to select AUTO to allow the

thermostat to automatically change between Heat and Cool.

Manual Operation (Bypassing the Program)

Programmable Thermostats

Press or and then the HOLD button and adjust the

temperature wherever you like. This will override the program.

The HOLD feature bypasses the program and allows you

to adjust the temperature manually, as needed. Whatever

temperature you set in HOLD will be maintained 24 hours

a day, until you manually change the temperature or press

RUN SCHED to cancel HOLD and resume the programmed

schedule.

Program Override (Temporary Override)

Press or buttons to adjust the temperature. This

will override the temperature setting for two hours minimum

or until the next programmed time. To cancel the temporary

setting at any time and return to the program, press Run

Sched. If the SYSTEM button is pressed to select AUTO

the thermostat will change to Heat or Cool, whichever ran

last. If it switches to heat but you want cool, or it changes

to cool but you want heat, press both

and buttons

simultaneously to change to the other mode.

pressing the

or keys. A selection of 0 Days for

non-programmable will eliminate the need for EMR, and

that step in the menu will be skipped.

17 & 18) Select Automatic Schedule – 1F85 only, with just

one touch of the Auto Schedule key this feature allows

you to program a desired comfort temperature into all the

program periods along with a 6° set back for night peri-

ods of both Heat and Cool programs. Factory default is

“On” for both. When Heat AS On and Cool AS On are

activated while in Heat or Cool mode, select desired

setpoint temperature and press Auto Schedule. This

value will be copied into all the morning, day and evening

program periods. The night program periods will have a

6°F set back.

19 & 20) Select Fast Second Stage ON or OFF – Heat

pump or Multi-stage only, in the run mode, with the fast

Heat feature enabled (FA Heat On), if the Heat setpoint

temperature is manually raised by 3°F (2°C) or more

above the actual temperature using

the second

stage will energize immediately. With FA OFF, second

stage will not energize until the setpoint temperature is

1°F or more above actual temperature for more than ten

minutes. The Fast Cool feature (FA Cool) provides the

same controls when the setpoint temperature is lowered.

21) Comfort Alert with Active Protection – Turn this

feature ON to enable active protection. This allows the

thermostat to identify fault codes sent by the Comfort

Alert module when compressor damage is possible and

react to those codes by turning the compressor off. Fault

codes from the Comfort Alert module will ﬂash on the

thermostat. (Refer to Comfort Alert Yellow Alert Codes

in Troubleshooting section.) If a Comfort Alert module is

not connected, or to disable active protection, turn this

feature OFF. If a Comfort Alert module is connected and

this feature is turned OFF, the thermostat will still receive

and ﬂash the fault codes from the Comfort Alert module,

but the active protection will not be enabled to protect the

compressor.

22) Select Daylight Saving Time Calculation – 1F85 only,

this feature will allow the thermostat to calculate the DST

automatically and apply it to the Real Time Clock display.

Default On. Use

or touch keys to select the

feature OFF.

23) Select Filter Replacement Reminder and Set Run

Time – Select the “Change Filter” reminder On or

OFF. If selected On, press MENU to select the time

period from 25 to 1975 hours in 25 hours increments.

In a typical system, 200 hours (default) of run time is

approximately 30 days. After the selected time of blower

operation, the thermostat will display “Change Filter”

as a reminder to change or clean your air ﬁlter. When

“Change Filter” is displayed, press MENU or RUN

SCHED button to clear the display and restart the time to

the next ﬁlter change.

24) Select Reversing Valve Output – The O/B option is

factory set at “O” position. This will accommodate the

majority of heat pump applications, which require the

changeover relay to be energized in COOL. If the

thermostat you are replacing or the heat pump being

installed with this thermostat requires a “B” terminal, to

energize the changeover relay in HEAT, the O/B option

should be set at “B” position.

INSTALLER/CONFIGURATION MENU

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Emerson 1F85-0422 Operations Instructions Page 6

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