Air-Fi LED Indicators
Flashing green NWK LED means the WCI is…
Not joined to the network.
What is the required antenna clearance for a WCI?
1 inch.
Which port is used for Ensemble Cloud login?
HTTPS TCP 443.
How do you respond to “We don’t want personal data uploaded”?
Only HVAC operational data is stored unless manually entered.
What does BACnet/SC replace in legacy systems?
BACnet/IP over UDP broadcast
What does solid green NWK LED indicate?
The WCI is successfully connected to the network.
When must a WCI be wired and addressed?
Before powering the controller.
Which outbound port does BACnet/SC require?
TCP 47808
How do you respond to “We avoid static IPs”?
BACnet/SC supports DHCP — no static IPs required.
What security item must every BACnet/SC node have?
A valid certificate.
What does a solid yellow NWK LED indicate?
The WCI is the coordinator OR the network is open.
Which WCI becomes the coordinator?
The one wired to the SC+.
Does Ensemble Cloud require inbound firewall openings?
No — outbound only.
How do you respond to “NAT breaks BACnet/IP — will this break your system?”
BACnet/SC uses TLS over TCP, so NAT is not a problem.
As BACnet/IP has no native encryption, all BACnet/IP traffic is tunneled to the Ensemble Cloud using a secure IPsec tunnel. BACnet/IP does not support Network Address Translation (NAT)
When must certificate ownership and expiration be documented?
During the cloud site survey.
What does a flashing red LED indicate?
Communication fault.
What happens if two WCIs share the same NET address?
Address collision prevents joining.
What type of data is stored in Ensemble Cloud by default?
HVAC machine data only.
How do you respond to “How do we know traffic is secure?”
BACnet/SC uses TLS 1.2+or greater and certificate authentication.
Why is BACnet/SC easier for IT than IPsec tunnels?
No NAT issues, DHCP friendly, outbound only
How long does the Air-Fi join window stay open?
60 minutes.
What is the correct Air-Fi power sequence?
WCI → Controller → SC+ → sensors.
What login security method is required for cloud access?
Multi-Factor Authentication (MFA).
Who manages certificate renewals?
Customer IT owns renewal; technician configures and documents.
Name the three BACnet/SC controller roles.
Primary SC node, Router Node, Failover Node.