Unifi Access Point says in Adopting state

I’m running the UniFi Controller on my Synology NAS in a docker container. After a firewall upgrade (gateway for the AP LAN), I noticed that all my Access Points were in the Adopting state. The wireless was still working fine, but no UniFI AP was in the Connected state. Forcing provisioning the AP’s did not work. So I restated all my AP’s the hard way by restarting the PoE adapters, just to get it working again, i hoped…

This fixed the issue for the AP-AC-Pro access points. However the AP-Pro stayed in the Adopting state even after a reboot.

I logged in to the node and checked the configuration;

$ ssh <user>@ 
<user>@'s password: 

BusyBox v1.25.1 () built-in shell (ash)

  ___ ___      .__________.__
 |   |   |____ |__\_  ____/__|
 |   |   /    \|  ||  __) |  |   (c) 2010-2019
 |   |  |   |  \  ||  \   |  |   Ubiquiti Networks, Inc.
 |______|___|  /__||__/   |__|
            |_/                  https://www.ui.com/

      Welcome to UniFi UAP-Pro!

AP1-BZ.v4.0.69# grep url cfg/mgmt 

As you can see the mgmt.servers.1.url is set to IP, this is incorrect! No idea how it ended up in there, but I changed it and intermediately the AP had a Connected state with the controller again!

AP1-BZ.v4.0.69# set-inform

Adoption request sent to ''.  Use the controller to complete the adopt process.

After this setting change, I upgraded the AP to version, checked the cfg/mgmt file again and now the mgmt.servers.1.url value is just fine.

Update: Now I got an idea what happened :) is the IP the docker container is using. Somehow this ended up at the AP. I changed the following settings and now it’s fixed;

Settings > Controller Settings > Advanced Configuration

Controller Hostname/IP: (my controller IP)
Override Inform Host With Controller Hostname/IP: enabled

Connect Nest 3rd generation to Bosch 26 HRC

Connecting a 3rd generation Nest Learning Thermostat is pretty simple if you know where to connect the wires. In this blog I have some instructions to connect to the Bosch 26 HRC furnace. The first part is about the old connection and the second part is about connecting the Nest.

First I didn’t get it to work, this was because the OpenTherm module was disconnect for the previous installation. The red circle shows the disconnected plug.

Bosch furnace connections 2

Blue square = Bosch connection, red square = OpenTherm module connections, red circle = Opentherm connector.

This OpenTherm connector was unplugged/disconnected because the previous thermostat was a simple on/off (non-modulating) thermostat which was connected like this schema on the Bosch furnace:

non-modulating-thermostat-bosch 26 hrc

Connect a non modulating thermostat to Bosch 26 HRC (image source: Bosch 26 HRC manual)

So the very sloppy wires in the blue square pins 1 and 2 are connected to the old thermostat in the living room. The resistor is connected between 2 and 4 and there is a bridge between 8 and 9.

Bosch furnace connections 1

Blue square = Bosch connection, red square = OpenTherm module connections

So this was the old working connection with an old non modulating thermostat. The Red square in the picture above shows the pins connected to the OpenTherm module. Bosch calls this the OTM1 in their manual. OpenTherm Module

OpenTherm Module (OTM1)

I removed to old wires (in the blue square) and placed the resistor as a loop on pin 7 (as the original state) and then plugged in the OpenTherm plug onto the board just as the picture below:


Connect the OpenTherm Module (OTM1) to the furnace (image source: Bosch 26 HRC maunal)

Now connecting the Nest is simple. Nest comes with a Heat Link unit which you have to connect to the furnace and a thermostat which you probably place in your living room.

The 3rd generation Heat link looks like this:

IMG_3392 edited

Nest Heat Link

The three circles mean;

  • Red; 230V to power the Heat Link unit
  • Blue; connections to furnace OpenTherm adapter pins O and T
  • Green; connection to the Nest Thermostat

In the Installation Guide you can find this image for this 3 connection pairs.

Nest Opentherm connectionsNest OpenTherm connection schema (
image source (PDF)

That’s all. the most time I spend figuring out how to the connect the Bosch OTM1 module to the furnace and remove the old wires. good luck!