Status Indicators; The Keypad - Lennox @DNOVA 2mAC ADVANCED CONTROLLER Installation, Operating And Maintenance

µAC USER INTERFACE

status indicators

The main states of the regulator (power supply present, alarm
active and remote ON/OFF input status) are displayed to the
user through 3 LEDs on the front panel.
Meaning of the LeD
Line LeD (yellow): control powered
Alarm LeD (red): machine alarm (the siren symbol on the
display is on only when the buzzer is active)
on LeD (green): machine ON from keypad or supervisor
(referred to the EEPROM variable). The effective ON status of
the machine may, in addition, depend on the ON-OFF digital
input, on the active time band, the stand-by condition transmitted
from the master unit (if a series of units is in rotation), and is
indicated by the illumination of the fan symbol.
the on-oFF symbols on the Display are illuminated only
when the input of the remote contact is enabled and
indicate the status of such contact.

the keypad

The buttons have the following meanings:
on/off
- Commutes status: if the machine is on, one press of the button places it in Standby; vice-versa, it is re-
enabled.
alarm
- Pressed for 5 secs accesses the User parameters.
- In the presence of an alarm silences the buzzer.
- Repeated pressing displays, cyclically: the current time, date and the temperature of the air in the room.
- In programming phase scrolls or increases the value of the parameters.
- Held pressed displays the set-point.
- In programming phase scrolls or decreases the value of the parameters.
- Pressed for 5 secs accesses the Direct parameters.
enter
- In programming phase modifies the value of the selected parameter.
alarm
enter
+
- Pressed together for 5 secs access the Factory parameters.
- Pressed together for 2 secs reset the alarms.
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Page  - IOM / @DNOVA-µAC-0907-E