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ATTENTION
Before starting units of this type, ensure that all personnel involved have read and understood Chapter 2 “Safety” and
follow the procedures set down in Chapter 6 “Start-up”.
0 . 1
U n i t O N - O F F
The unit can be switched on and off from the keypad by pressing key
for 1 second; OFF status (stand-by) is confirmed
by a display message.
In addition, the unit can also be switched on and off by a digital input, if configured. If the unit is switched on from a digital
input it can be switched off from the keypad.
Digital input OFF status is shown on the display by means of a lit decimal point “OF.F”. When the unit is in “OF.F” status
the ON-OFF key is inhibited. In the transition to ON from a digital input, the unit returns to the prior “OF.F” status unless the
value of “controller On-off command” is changed from the supervision system.
0 . 2
C o n d e n s a t e d i s c h a r g e k e y
The yellow condensate discharge key serves to open the relative valve manually (if the condensate discharge function is set
as timer controlled); moreover, if selected from parameter H1=3 the discharge time (H4) can be reprogrammed; in this case
the flashing red discharge icon will be displayed.
0 . 3
K e y p a d l o c k
To lock or unlock the keypad, press keys
+
for 5 seconds.
The keypad lock is shown for a few seconds by the message “POF”, keypad unlocked is shown with “POn”.
The type of lock can be selected using parameter “
blK
” (the message “
.
” is shown on the display):
blK=0 keypad enabled
blK=1 entire keypad disabled
blk=2 only ON/OFF key enabled
When the keypad is disabled pressing any key will produce the message “POF”.
NOTE
When the unit is shipped from the factory the keypad is unlocked.
0 . 4
A l a r m s r e s e t
To reset manual reset alarms (even with the controller in OFF status)
:
1. Press
for more than 2 seconds but less than 5 seconds.
2. When the key is released the command is confirmed by the appearance of message “
rES
” for several seconds.