Check Power / Fuse Led's; Check Zone Bus Led's; Check Manifold Actuators - Rehau NEA SMART 2.0 Service Manual

7.3.1

Check POWER / FUSE LED's

After switching on the power supply, check the POWER/FUSE LED's
of all components!
See the table below and follow the hints.
NEA SMART 2.0 device
Base Power supply OK
R-Module Power supply from Zone Bus is ok,
Additional power supply for actu-
ators is connected
U-Module for mixed circuit VDC power supply from system bus
cable is ok,
Additional power supply for mixing
valve actuator is connected
U-Module for dehumidifier VDC power supply from system bus
cable is ok,
Additional power supply which is not
needed, is connected
Check additional power supply
Tab. 7-1 LED's on devices
7.3.2

Check zone bus LED's

The zone bus LED of the NEA SMART 2.0 Base is blinking, when
there is a zone bus component (NEA SMART 2.0 R-Module or
bus-based room unit) connected.
7.3.3

Check manifold actuators

For the first 5 times, the NEA SMART 2.0 Base is switched on, the
outputs of the channels, where the manifold actuators are connected,
are switched on one after the other for about 10 minutes.
This is done to open the actuators completely and to unlock the "first
open function" of the actuators.
If one of the LED's does not show, what has been expected, please:
- switch off power supply
- check and correct cabling
- replace defective fuses (only use correct fuse types!)
- switch power supply on
LED green
Power supply is connected, fuse is
defective
Power supply from Zone Bus is ok,
Additional power supply for actu-
ators is not connected
Connect power supply for actu-
ators
VDC power supply from system bus
cable is ok,
Additional power supply for mixing
valve actuator is not connected
Connect power supply for actu-
ator
VDC power supply from system bus
cable is ok,
Additional power supply which is not
connected (and not needed)
During this time span, the correct operating of all actuators can be
checked.
Note:
This function can be stopped by pressing the OK button quickly for
less than a second.
During this time span, all other outputs of the NEA SMART 2.0 Base
are blocked.
LED red
No power supply connected
Check power supply connection
No power supply from Zone Bus
Check Zone Bus connection
VDC power supply from system bus
cable is not present.
Check system bus cable connec-
tion
VDC power supply from system bus
cable is not present.
Check system bus cable connec-
tion
LED off
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