tekmar 542 Thermostat Installation - Manual (Page 25)

25 of 28 © 2007 D 542 - 08/07
Error Messages (1 of 3)
Error Message Description
ADJUST ERROR
The thermostat failed to read the Adjust menu settings from memory and has reloaded
the factory default settings. Operation stops until you check the Adjust menu settings. The
thermostat provides freeze protection only until you check the Adjust menu items.
Note: To clear the error, the access level must be set to Advanced before checking the
settings in the Adjust menu.
TIME ERROR
The thermostat failed to read the Time menu settings from memory and has reloaded the
factory default settings. The thermostat continues to operate while displaying this error.
Note: To clear the error, the access level must be set to Advanced before checking the
settings in the Time menu.
SCENE ERROR
The thermostat failed to read the Scene menu settings from memory and has reloaded the
factory default settings. The thermostat continues to operate while displaying this error.
Note: To clear the error, the access level must be set to Advanced before checking the
settings in the Scene menu.
SCHEDULE ERROR
The thermostat failed to read the Schedule menu settings from memory and has reloaded the
factory default settings. The thermostat continues to operate while displaying this error.
Note: To clear the error, the access level must be set to Advanced before checking the
settings in the Schedule menu.
MISCELLANEOUS ERROR
The thermostat failed to read the Miscellaneous menu settings from memory and has reloaded
the factory default settings. The thermostat continues to operate while displaying this error.
Note: To clear the error, the access level must be set to Advanced before checking the settings
in the Miscellaneous menu.
tN4 BUS ERROR
Due to a short or open circuit, communication is lost with the tN4 bus. Check wires for damage.
Check ‘C’ and ‘R’ wires for polarity. All devices on the tN4 bus will display this error if there is a
short circuit. If the error is only on this device, check for an open circuit between the thermostat
and Zone Manager. Once the error is corrected press any button to clear the error.
Access Levels
In some cases, it is not desirable to let day-to-day users view error messages. In these cases, by lowering the access level
of the thermostat or setpoint device to ‘User’ or lower, error messages cannot be seen in the View menu and the warning
symbol only appears if there is a local error or a device error caused by a critical error on another device. If there is an error
message on the system that you cannot find on a particular thermostat, make sure that the access level on that thermostat
is set to Installer or Advanced.
Sensor Temperature Errors
If a control is unable to display a temperature due to a sensor malfunction or communication problem, the word “Err” is
displayed in place of the temperature. This usually indicates that there is an error somewhere on the system but is not the
actual error message. Keep looking through the View menu to find the actual error message.
Device is attempting to show floor
temperature but cannot because
of sensor problem.
Keep pressing the Item
button to find the actual
error message
Once error is corrected,
the temperature can be
displayed