LED displays
Run (green)
Dark
No operating voltage AC 24 V or unit is starting.
Lit
Unit ready to operate.
Flashing Communicating with ACS.
Dark
No fault (normal operating state).
Local (red)
Lit
Central communication unit faults and/or signal at fault inputs "Hours run for
service
reached".
Flashing Fault unacknowledged.
Without configured fault relay "System" in the OZW775:
System (red)
Dark
No fault (normal operating state).
Lit
Device fault in KNX network.
With configured fault relay "System" in the OZW775:
Dark
No fault (normal operating state).
Lit
Device fault in KNX network, fault relay acknowledged.
Flashing Device fault in KNX network, fault relay unacknowledged.
Dark
No CF card integrated.
CF cards (green)
Lit CF
card
integrated.
Flashing CF card is being integrated or removed
(after pressing button "long" on "Config").
Dark
No bus power supply.
KNX (green/red)
Steady green
Bus power supply available.
Flashing green Data exchange via KNX.
Steady red
Unit in addressing mode.
Operating buttons
Pressing the button briefly ("short") means <2 seconds, "long" >4 seconds.
Config
Short No
function.
Long
Integrate or remove CF card (or both CF cards).
Short Acknowledge "Local" fault, fault relay "System".
Ack
Long See
“Button
combinations“.
Short No
function.
Report
Long See
“Button
combinations“.
Short Initializes modem, checks modem connection.
Modem
Long
Initializes modem, sends system report to configured receivers.
Button combinations
For button combinations, always press "long" (>4 seconds).
Simultaneously press "Modem" and "Report" (programming mode).
Addressing mode
Simultaneously press "Modem" and "Ack".
Restart central unit
Simultaneously press "Modem", "Ack", and "Config".
Default state
Note:
All configuration data and settings are reset. The device list and all unsent
messages are deleted. History data is not deleted.
12/18
Building Technologies
Central communication unit OZW775 V2.0
CE1N5663en
HVAC Products
29.10.2008
