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USING THE CONTROLLER
THE MEANING OF A FLASHING DISPLAY
The display will flash in certain cases
and not in others. The flashing indi-
cates that the value shown can be ad-
justed. A value that is not flashing
cannot be adjusted.
TEMPERATURE UNITS
Temperatures can be displayed in either Celsius or Fahrenheit units.
Set internal switch # 2 to the desired position:
•
ON to display temperatures in Celsius units.
•
OFF to display temperatures in Fahrenheit units.
FACTORY SETTING: When the controller is shipped from the factory,
internal switch # 2 is set to OFF (temperatures are displayed in Fahrenheit
units).
LOCKING THE PARAMETER SETTINGS
The parameter settings can be locked to prevent accidentally modifying
them. When the settings are locked, only the temperature set point (as
long as the temperature curve is deactivated) can be modified.
Locking the parameters:
Set internal switch # 1 to ON.
ON
2
ON
1
TC4-NVS/P.rev.05
15
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