tekmar 542 Thermostat User Manuals - Manual (Page 11)

11 of 12 © 2007 U 542 - 08/07
Units of Temperature
Backlight
Cleaning the Thermostat
or
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):
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.
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.
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
Warning Symbol
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 542 is available
on the tekmar website: www.tekmarcontrols.com.