Trane TAYSTAT 540 - Manual (Page 18)

18
Pub. No. 22-5185-01
69-1229
SYSTEM settings control the thermostat
operation as follows:
Cool: Normal setting for months when your
home needs cooling (air condition-
ing). Digital display shows a
snowflake
when cooling is on.
Off: Both heating and cooling are off.
Heat: Normal setting for months when your
home needs heating. Digital display
shows a flame
when heating is
on.
Em. Ht.: Switch to this setting when your
home needs heat, but your equip-
ment needs servicing or is not
working properly. In this mode, the
thermostat controls only the backup
heat. The heat pump is off.
NOTE: In the programming mode, the
and indicate the system setting.
Fan Setting
To select the desired fan setting, slide the
FAN switch in the lower left corner of the
thermostat.
M17329
M17337
FAN
Auto On
FAN SWITCH
SYSTEM
Cool Off Heat Em. Ht.