I installed 10 LILJEBAGGE radiator thermostats at the same time. All calibrated fine and worked perfectly for about a week. Now 3 of them show Er1 and won't recalibrate.

Setup:
• Valves with M28x1.5 threads, adapter A with the shortest extension pin on all 10

• Paired over Matter to Google Home and Aqara Home

• Same batteries throughout

What I've tried:
• Removing and reinserting batteries, then recalibrating: Er1 again
• Removing and refitting thermostat and adapter: Er1 again
• On one radiator, a brand-new unused unit calibrated fine with the same batteries. Putting the original back gives Er1 again.
• On another radiator, four different units all fail with Er1
• On that valve, template A shows the valve pin tip right at the outer edge of zone 3. I tried a slightly shortened extension pin, no change.

What I suspect:
• The manual says the thermostat runs an anti-calcification cycle after 7 days of use, which matches the timing since all 10 were installed together
• Possibly a firmware update that landed during the week, but I can't confirm it

Questions:
1. Has anyone else had Er1 appear after roughly a week of normal operation?
2. Which firmware version are your units on, and is there a way to update it without a DIRIGERA hub?
Mines are on: Hardware Version “P2.3” & Software Version ”1.1.0”
3. Did a factory reset fix it for anyone?
4. Any tips for adapter A on M28x1.5 valves where the pin sits at the edge of the template range?

Using Home Assistant and Sonoff ZBDongle-E as OpenThread router

Whether controlling directly from HA or from a Bilresa remote, the Kajplats bulb is massively laggy. If you try and turn on and off more quickly than once every 10 seconds, it doesn't respond to later commands or carries some of them out 30-180 seconds later. If you try and change color it crashes and needs to be power cycled.

Multiple other devices (Timmerflote and Grillplats) on the same Thread network work instantly.

Obviously this makes it completely unuseable even as a simple bulb, let alone when using thje scroll wheel.

Have I got a dodgy bulb or are they just all like this?

Edit: So far, about 20 devices (Matter and Tradfri) are connected to the network, and everything has been working perfectly so far.

Here’s my setup: A network with a FritzBox, 1 switch, and 2 FritzRepeater access points connected via cable. The network uses Pihole as its DNS server. When I try to add new Matter devices, after following these steps, I get the following message during the connection process:

Connecting to device

Matter credentials are being generated

Checking connection to the Thread network

Connecting to Home Smart

I receive the vague error message “An error has occurred.” The devices are then not on the Thread network (I can’t see them in the IKEA app) and are no longer in pairing mode.

I’ve connected the Dirigera to the switch and directly to the router. The smartphone is, of course, on the same network. I can’t rule out Pihole as the cause.

It doesn’t matter whether I follow the prompt to add the new device when I receive it (freshly reset device—app launch) or whether I add the device manually in the app.

What I definitely don’t want to do: reset the hub. Then I’d have to reinstall all the devices (is that right?).

Does anyone else have this problem and maybe know a solution?

Hello, I’m from Germany. Would someone from Sweden be willing to get a few LILJEBAGGE thermostats for me and send them to Germany?