Honeywell T8131C Owner's Manual page 17

Cooling will not come on (Cont).
The house is too warm or too cool.
SYSTEM ON indicator is lit, but no
heat is coming from the registers.
The furnace or air conditioner On
cycle is too short or too long.
The current thermostat
setting does not match the
display temperature.
bAt Lo remains on display after
fresh batteries are installed.
ten minutes and displays COOL, contact the
Honeywell Customer Assistance at 1-800-468-1502.
Press PRESENT SETTING key to check the current
temperature setting.
If desired, change the temperature setting. See page 5.
Allow time for the furnace to heat up and the fan to
come on before checking for heat at the register.
Contact your heating or air conditioner contractor. If
further assistance is needed, call Honeywell Customer
Assistance at 1-800-468-1502.
Be aware that it is normal for the current setting
and display temperature to differ occasionally.
Remove batteries. Wait one hour. Install fresh alkaline
batteries.
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