Hi everyone,
i recently bought a new “heating-setup”
and having several problems with it.
Setup(latest firmware):
- Hub: M100
- 5× Aqara W600 thermostats
- 3× Aqara W100 temperature sensors
- 1× Aqara Temperature & Humidity sensor.
Thermostats are used in every room (living room, bathroom, bedroom, kitchen and office).
All devices in Zigbee mode, each thermostat is connected with a external sensor (except the bathroom, as it is very small)
First: Target vs. Actual Temperature
There are pets in the living room, so keeping a stable temperature (22 °C) is very important.
At night, the living room door is also closed, so there should be little air exchange with other rooms.
Target (Setpoint): 22 °C
Devices: Aqara W600 + Aqara W100
W600 (Offset -1 °C):
01:40 - 23 °C
01:57 - 22 °C
02:26 - 21 °C
03:36–04:15 - 20 °C
W100:
01:48 - 22.3 °C
03:04 - 20.8 °C
03:49 - 20.3 °C (–2 °C in about 2 hours)
04:52 - 22.3 °C
So even though the target is set to 22 °C, the room drops down to about 20 °C for a longer period during the night. I would expect the thermostat to keep it much closer to the target, especially in a closed room.
Second: Schedule Problem (Bathroom)
Device: W600 (Offset 0 °C)
Configured schedule (target temperature):
23:00–06:00 - 17 °C
06:00–08:00 - 20 °C
08:00–21:45 - 17 °C
21:45–23:00 - 20 °C
Actual behavior:
Between 06:00–08:00, the thermostat stays at 18 °C, not 20 °C.
Third: Open Window Detection (very strict?)
According to Aqara’s own description, the open window detection is only triggered if the temperature drops by 3 °C within 5 minutes. This is almost impossible to reach in my opinion, even with fully opened windows so maybe this is a design issue.
Scenario: airing out bedroom and kitchen for 30 minutes, windows and doors completely open, opposite sides (cross ventilation), outside temperature around 3–4 °C.
Bedroom:
Devices: W600 (Offset -1 °C) + Temperature/Humidity Sensor
08:01 - 17.3 °C
08:28 - 16.6 °C (–0.7 / –0.9 °C in ~30 min)
Both W600 and the sensor show almost identical values.
Kitchen
Devices: W600 (Offset -2 °C) + W100
W600 temperature:
08:10 - 16.5 °C
08:24 - 15.5 °C (–1 °C in ~15 min)
W100 temperature:
07:47 - 18.7 °C
07:55 - 18.2 °C
08:30 - 17.7 °C (–1 °C over ~45 min / –0.5 °C over ~30 min)
W100 humidity:
08:05 - 56.7 %
08:18 - 50.6 % (–6.1 % in ~15 min)
I think there should be more options/adjustable settings in the window open detection.






