tado thermostat: Wireless Receiver: all lights off
The Wireless Receiver is not supplied with power.
Applies to: tado° Wireless Receiver (UK and EU). What you see: a light.
What to do
Wiring and power. tado ties this, on at least some systems, to the wiring, the power supply or the C wire. The steps here are only tado’s own, as its page states them; semiatic gives no wiring instructions of its own.
tado° Help Center gives no step for this on the page cited; the meaning above is all it says. Do not guess at the wiring: tado’s own help site is the authority.
Source
tado’s own help page, read on the date shown.
- tado° Help Center: What do the LEDs and blinking states on the Wireless Receiver mean? — tado° Wireless Receiver: the UK Programmer with Hot Water Control and the EU version. support.tado.com Checked 2026-09-29.