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ON = heat recovery on
OFF = heat recovery off
OFF blinking = heat recovery off for free cooling/heating or due to heat
exchanger frost protection alarm
ON/OFF alternating blinking = modulating bypass damper of the heat
exchanger with cross-flow partially open (free heating or free cooling
in progress)
%rH
rH
485
°C°F
set
ON
OFF
%
M
A
HEAT
COOL
ESC
M
O
D
E
Display C time zone number on
Free cooling or free heating on
Keyboard
On/Off, navigation and confirm key
Change setpoint, navigation and value entry keys
ESC
Speed type key and
ESC
operation in navigation
M
O
D
E
Manual season or occupation change key or operating mode
(see
“MODE button functionality” page 10
)
4. Quick access parameter setting
The controller carries out the following operations with a simple button press:
•
Switch on and off
•
Configuration of the setpoint or setpoint offset
• Fan operating mode
•
MODE
button functionality
The
MODE
button can be assigned to one quick access function and two normal access functions, depending on the parameter
195
(see
“MODE button functionality” page 10
)
195
=0: season change (if it is local, for 2-pipe systems)
195
=1: timer extension.
195
=2: operating mode (without clock, using the timer, holiday)
• Keypad lock
To lock the keypad, press the
ESC
M
O
D
E
buttons at the same time; the display shows the text
LK
for one second.
When any button is pressed, it is no longer possible to access the parameters and the display shows
LK
.
To unlock the keypad, press the
ESC
M
O
D
E
buttons again; the display shows
NLK
for one second.
• Switch on and off
The appliance can be switched on or off in 4 different ways:
- manually using the keypad,
- from an external contact,
- using the timer,
- from Modbus
If the unit has been switched off by remote contact, it can only be restarted by inserting the contact in the ON position.
If the remote contact is in the ON position,
210
=0,
it is possible to turn the unit on with a source other than the one used to turn it off.
Example:
If the unit has been switched off by the timer, it can be restarted manually or via modbus or by external contact.
If the remote contact is in the ON position,
210
=1,
if the unit has not been switched off manually (via modbus or timer), it can be restarted with any source. But if the unit
has been switched off manually, it can only be restarted manually.
To put the unit in the on/off position manually, press the
button until
ON
or
OFF
is displayed.
To use the external contact as a way of switching the unit on/off, configure the contact as “Remote On/Off” (
015
=2 (DI1)
