tekmar 542 Thermostat User Manuals - Manual (Page 2)

© 2007 U 542 - 08/07 2 of 12
Display
MODE OF OPERATION
Displays whether in heating or cooling
mode.
FIRST STAGE OF HEAT
Indicates when the first stage of heat is
operating.
SCHEDULE MASTER
Indicates this thermostat is a schedule
master.
t N4 COMMUNICATION
Indicates when a communication network
is detected.
LOCK
Indicates that the access levels are
locked. Also indicates when an item is
visible but not adjustable.
OPTIMUM START / STOP
Indicates that Optimum Start or Optimum
Stop is active.
WARNING
Indicates an error is present.
TEMPORARY HOLD
Indicates that the temperature has been
temporarily adjusted from the scheduled
event temperature.
SCHEDULED EVENT
Indicates the current scheduled event.
Symbols Description
Item Field
Displays an abbreviated
name of the selected item
Number Field
Displays the current value
of the selected item
Status Field
Displays the current status
of the control’s inputs,
outputs and operation
Menu Field
Displays the
current menu