Lennox T7300 Installation Instructions Manual page 14

Fan does not turn on in a
call for heat (electric fur-
nace).
Heating equipment
running in the cool mode.
Heating equipment does
not turn off and heat tem-
perature setting is set be-
low room temperature
(Heat On is not in the dis-
play).
Cannot set the system
setting to Heat.
Cannot set the system
setting to Cool.
Heat On is not in the dis-
play.
Cool On is not in the dis-
play.
Wait is in the display.
Screen Locked" appears
on the screen and all or
some of the keys do not
respond.
Fan Control in Heating is set
to Gas or Oil Furnace (Set-
ting 0180).
Heating equipment is not a
is heat pump but System Type
(Installer Setup
0170) is set to Heat Pump.
Heating equipment is not a
heat pump but System Type
(Installer Setup
0170) is set to Heat Pump.
System Type (Installer Set-
up Number 0170) is set to
Cool Only.
System Type (Installer Set-
up Number 0170) is set to
Heat Only or Heat Only with
Fan.
System setting is not set to
Heat and/or temperature
setting is not set above room
temperature.
System setting is not set to
Cool and/or the tempera-
ture setting is not set below
room temperature.
Compressor minimum off
timer is active.
The keypad is fully or partial-
ly locked.
Set Fan Control in Heating to Electric Furnace (Setting
0180).
Set System Type (Installer Setup Number 0170) to match
Number the installed heating and/or cooling equipment.
Set System Type (Installer Setup Number 0170) to
Number
match the installed heating and/or cooling equipment.
Set System Type (Installer Setup Number 0170) to match
the installed heating and/or cooling equipment.
Set System Type (Installer Setup Number 0170) to match
the installed heating and/or cooling equipment.
Set the system setting to Heat and set the temperature
setting above the room temperature.
Set the system setting to Cool and set the temperature
setting below the room temperature.
Wait up to five minutes for the cooling or heating (heat
pump) equipment to turn on.
Check ISU 0670 to change keypad locked options.
Page 14