Hello everyone ,

My Johnson control thermostat is not working. It is showing flashing P. I have attached a picture of it.

I have tried pressing the fan button for more than 10 seconds. I also have tried pressing the mode button for more than 10 seconds. Both ways didn't work. I couldn’t turn on the heating. I also shut down the AC breaker for more than 10 minutes and it didn’t work either.

Has anyone else experienced this issue before? Do you know if the Johnson control thermostat has batteries not? Any idea or thought would be appreciated. Thanks

Hi All
I am trying to pair Link2home zigbee hub to my iPhone with no success.
I have a solid blue light and a flashing red one.
I switched off the 5ghz wireless on router with no success. Tried a Samsung phone with same results.
Any ideas would be appreciated.
Thanks.

How do I clear this?

Hello,

I bought a house in the UK recently. The previous owners have installed a hive and I don't think it was ever fitted properly for the following reasons;

The hive thermostat + hot water won't connect to the tap

The boiler keeps randomly switching on

Can anyone recommend on what I need to do to fix this?

Anyway to clear this on this model? I don’t see any way to

Hi!

This UPM model htm611a screen reads only at an angle. There are no batteries to change and I’ve checked the breaker.

Can anyone suggest what to do next?

I’m looking to replace my old wired AC-200 thermostat with a wireless Honeywell T6R. I have an older AGPO HR URS unit for district heating and underfloor heating.

Currently, a blue and red wire are connected to terminals 1 and 2. According to the wiring diagrams for the AGPO URS Comfort, Elegance, and Elegance II, these terminals are intended for a 24V on/off thermostat.

Can anyone confirm whether this also applies to my older AGPO HR URS, and whether I can connect the T6R’s volt-free relay receiver to these terminals?

Also, can I simply disconnect the existing thermostat wires at the AGPO unit and leave the old thermostat in place behind a cabinet?
I’ve attached photos of the unit and its terminals.

Hello,

I need help releasing hold, have tried manual restart and changing batteries.. please help

Hi everyone, I'm modernizing the heating controls in my Swiss home (built around 1980) with Homematic IP (HmIP-eTRV-C-2), which uses an M30x1.5 thread.

While most of my radiators work with the included adapters, I have a few older valves left over from before a heat pump upgrade that I can't seem to identify. I tried a 3D-printed Danfoss RAVL-to-M30 adapter, but it doesn't fit, so it's definitely not RAVL (and likely not RAV either).

Can anyone identify this specific valve brand/model from the pictures and point me toward the correct adapter to get an M30 thread on it?

• Era: Late 1970s / Early 1980s, Switzerland.

I have a gen 3 nest learning thermostat and I am looking to install it on a saunier duval themaclassic f30e boiler and I was wondering if anyone knew what it gets connected to?

There is a 2 wire strip connector on the back of the control that is currently bridged and a 3 pin connector inside the control. I have narrowed it down to those 2.

My apologies in advance if this is the wrong sub.

I am replacing an old thermostat that no longer works with a smart thermostat. In the wall cavity behind the old thermostat there is a bundle of wires with blue unused. At the furnace control board, I see, what i assume to be the other end of this blue wire coiled around the bundle of wires. I connected the blue wire into the thermostat and im trying to get advice on whether it is okay to connect the othe end of the blue wire into the furnace control board's c terminal, which already has a red wire connected to it.

I have 4 separate thermostats that go through 4 separate baseboard heaters in our guest house. I want to replace them with a programmable alternative. I believe they are 240V, line voltage. Any guidance appreciated.