tekmar 540 Thermostat Installation - Manual (Page 8)

8 of 28 © 2011 D 540 - 12/11
SECONDARY DISPLAY MAIN DISPLAY
HEAT
Heat is turned on.
COOL
Cooling is turned on.
FAN
Fan is turned on.
SUN
Operating at the occupied
(day) temperature.
MOON
Operating at the unoccupied
(night) temperature.
AIR GROUP MASTER
Thermostat operates the
cooling for a group of
thermostats.
CLOCK
Operating on a
programmable schedule.
LOCK
Locked to ‘User’ access level.
AWAY
Operating at the Away scene
temperature.
tekmarNet ®
Communication is present.
WARNING SYMBOL
Indicates an error is present.
WARM WEATHER SHUT
DOWN
The heating system has been
shut off for the summer.
Display
Symbols Description
Switch between
Heat, Cool, Auto
and Off modes
Switch between
Auto, On and %
Fan operation
Adjust the current temperature
or displayed setting up or down
User Interface