White Rodgers 1F85RF-275 Manuale Utente

TROUBLESHOOTING

Symptom

Furnace

Furnace
(Air Conditioner)

(Air Conditioner)

(Air Conditioner)
Cycles Too Fast

Cycles Too Fast

Cycles Too Fast
or Too Slow (narrow or

or Too Slow (narrow or

or Too Slow (narrow or
wide temperature swing)

wide temperature swing)

Thermostat Setting &

Thermostat Setting &
Thermostat Thermometer

Thermostat Thermometer

Thermostat Thermometer
Disagree

Disagree

Blank Display and/or

Blank Display and/or
Keypad Not Responding

Keypad Not Responding

Heat Setpoint will

Heat Setpoint will
not Respond to the

not Respond to the

not Respond to the
Temperature Up Key

Temperature Up Key

Cool Setpoint will

Cool Setpoint will
not Respond to the

not Respond to the

not Respond to the
Temperature Down Key

Temperature Down Key

Forgot Keypad

Forgot Keypad
Lockout Code

Lockout Code

Why won't my 2nd or

Why won't my 2nd or
3rd stage come on?

3rd stage come on?

Possible Cause

1. The location of the thermostat and/or

the size of the Heating System may
be influencing the cycle rate.

1. Thermostat thermometer setting

requires adjustment.

1. Voltage spike or static discharge.

1. The desired setpoint conflicts with the

setpoint of the COOL mode.

1. The desired setpoint conflicts with the

setpoint of the HEAT mode.

Corrective Action

Digital thermostats normally provide precise
temperature control and may cycle faster than some
older mechanical models. A faster cycle rate means
the unit turns on and off more frequently but runs for
a shorter time so there is no increase in energy use.
If you would like to increase the cycle time, choose
SL

SL for slow cycle in the menu, step 4. If an accept-
able cycle rate is not achieved as received or by
choosing slow cycle, contact a local service person
for additional suggestions.

The thermometer can be adjusted +/- 3 degrees.
See Temperature Display Adjustment in the
Configuration Menu section.

Use the Reset Operation at top of previous page.

Change system mode to COOL. Raise the Cool
setpoint. Return to HEAT mode and set desired
temperature.

Change system mode to HEAT. Lower the Heat
setpoint. Return to COOL mode and set desired
temperature.

With the thermostat in any mode, press

and

at the same time to enter the configuration menu at
the point where the lockout code is to be entered.
Press

and

and SYSTEM button at the same

time to reset the lockout code, unlock the keypad.

Your thermostat is designed to determine the
optimum time to activate the second stage. Simply
raising the temperature in heating or lowering it in
cooling will not always force the thermostat to bring
the second stage on quickly. There is a time delay
from 0-30 minutes depending on the performance of
the first stage of the system.

White-Rodgers is a division
of Emerson Electric Co.

The Emerson logo is a
trademark and service mark
of Emerson Electric Co.

St. Louis, MO

www.white-rodgers.com

HOMEOWNER HELP LINE: 1-800-284-2925