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Key card contact logic
Window contact B1
Key card contact B2
Time
Action
Contact closed
(window closed)
Contact closed
(key card IN)
• —
•
Delay timer<Time
<Reset timer
• Time>Reset timer
• The unit operates
normally.
• If the reset timer has not
expired, the unit returns
to the previous state
before opening the
contact.
• If the reset timer has
expired, the unit returns
to the
“Default Reset
Setting”
(see “External
input interlock settings
overview” on page 37).
Contact closed
(window closed)
Contact open
(key card OUT)
Time<Delay timer
Normal indoor unit
operation.
Contact closed
(window closed)
Contact open
(key card OUT)
Time>Delay timer
Unit operation is forced off:
• Depending on whether
the Setback function is
enabled, Setback will
work or not.
•
Not possible to turn on/off
the unit with the
controller’s ON/OFF
button.
• After the delay timer has
expired, the reset timer
will start counting.
INFORMATION
•
The “previous state” can be the on/off state, operation mode, cooling setpoint, and heating
setpoint.
• When using the contacts, the fan speed as well as the Setback cooling and heating setpoints can
be changed at any time, without losing changes.
• The fan speed is stored independently for the two main operation modes (Heating and Cooling).
Separate fan speed settings are saved for Heating operation mode on the one hand, and Cooling,
Dry and Fan only operation mode on the other hand.
• When closing the contact, changes made while the key card contact is open and the delay timer
has not expired (normal operation) will not be saved.
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