User manual

Chapter 5: Monitoring and maintaining your SEC-HD Phason
42
To use temperature override mode
1. Press Program until
t e s t
displays and then press Select.
The display shows
34
, the first item in the Test menu.
2. Press Up or Down until
35
displays and then press Select.
The display shows the current temperature, which is now the test
temperature.
3. Press Up or Down to adjust the test temperature
The control responds to the changes in the test temperature.
4. To return to the Main menu, press Back twice. To return to the
Main display, press Back three times.
Servicing and maintaining your SEC-HD
Topics in this section include:
 Enabling and disabling ventilation (below)
 Restoring the factory defaults, parameter 27 (on page 43)
 Saving and restoring settings (on page 44)
 Displaying the firmware version, parameter 29 (on page 45)
 Updating the firmware, parameter 28 (on page 45)
 Replacement kits and optional accessories (on page 47)
Enabling and disabling ventilation
Normally, ventilation is enabled and the variable and relay stages function according to the program
settings. This is the default setting and we refer to it as normal operation .
Occasionally, you might want to disable the ventilation. For example, if a room is vacant, you might
want to disable ventilation to conserve energy. When ventilation is disabled:
 Variable stages are off
 Cooling stages (relay) are off
 Heating stages function normally
 The display alternates between the current temperature and
U off
 Alarms do not display
test
35
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