Units Of Temperature; Backlight; Cleaning The Thermostat; Error Messages - Tekmar 543 User Brochure

Units of Temperature

You can display temperatures in either Fahrenheit (°F) or
in Celsius (°C).
To change the units of temperature:
1. Use the Menu button to select the Misc menu.
2. Use the Item button until the units flash.
3. Use the Up or Down button to select Fahrenheit (°F) or
Celsius (°C):

Backlight

The thermostat's display has a backlight. By default the
backlight is temporarily On. You can also set the backlight
to be either permanently On or permanently Off.
To change the backlight setting:
1. Use the Menu button to select the Misc menu.
2. Use the Item button to select Backlite.

Cleaning the Thermostat

Clean the thermostat's exterior using a damp cloth. Moisten the cloth with water and wring out prior to wiping the thermostat.
Do not use solvents or cleaning solutions.

Error Messages

When the thermostat encounters a problem, a Warning
Symbol appears and a description of the error message is
displayed. To troubleshoot how to correct the error, please
refer to the Data Brochure or contact a qualified installer.
An electronic version of the Data Brochure D 543 is available
on the tekmar website: www.tekmarcontrols.com.
3. Use the Up or Down button to select a setting:
• • ON: Backlight stays on.
• • TMPY (Temporary): Backlight stays on for 30 seconds.
• • OFF: Backlight is off.
11 of 12
or
Warning Symbol
© 2007 U 543 - 08/07