Hi all,
Question regarding the Floor Overheat Protection function on the Aqara Floor Heating Thermostat W500
I have Amtico Flooring installed in my bathroom with electric UFH installed. This is currently controlled by a Heatmiser neoStat-2 V2 and a Heatmiser neoHub V2 which I’m looking to replace and bring the control into Aqara. I do have a surface temperature probe in the floor and it’s connected to the Heatmiser Neostat V2.
The flooring requirements state…
The maximum surface temperature for Amtico flooring is 27°C (81°F).
However, the Aqara Floor Heating Thermostat W500 spec’s state…
7. Floor Overheat Protection
When the wired NTC temperature sensor is connected, the system supports floor overheat protection by default. When the temperature value detected is greater than 40℃, the device will trigger the “floor overheat protection”, the electric heating will be forced to shut down, and enter the safety protection state. When the user presses the button on the device to cancel the alarm or the sensor detects that the temperature value drops to 5℃, the device will return to normal.
What I’m looking to understand is…
Can the Floor Overheat Protection be changed to be 27℃ in the setting?
Where does the W500 pick up the temperature from? The W500 itself? A connected Aqara Temp / Humidity sensor? The floor probe?
I’m not looking to keep the room at a set temperature , just want the flooring to feel warm.
Hello, you can select the NTC sensor as the information source for the W500. Then the set temperature will be maintained only from the NTC.
2. The sources of information you listed. Please note that only the one you selected (one source) works.
The overtemperature limit not exceeding 40 degrees Celsius is a fail-safe measure in hardware circuit design and does not currently support customization. However, we can constrain your maximum adjustable temperature to 5–27 °C by changing the floor material. Additionally, you can try setting up an automation rule: IF the temperature exceeds a certain value, THEN turn off the thermostat.
Hi. Does it mean that custom setting of maximum floor temperature (when build in temperature and humidity is set) will never be implemented and will be always default 40 degrees ? Because when i have wooded floor it can damage my floor and i can control it. Thank you
Hello, welcome to the forum. Yes, the built-in NTC sensor control will always work when it is 40°C, provided that it is not selected in the temperature control settings. If you have selected the NTC sensor, the W500 controls the temperature using this sensor (NTC), depending on the floor covering, you can select the control range (maximum 27°C, 29°C, 40°C). If you turn on the additional switch, when the NTC contact is broken, the W500 will turn off until you restore the contact.
@gafich10 I’m not sure if you understand what I mean. I have selected Built-in temperature and humidity. But I want also limit maximum temperature of the floor. If that limit is hit, heating will switch off and continue later when floor is coller (lets say 5 degrees less than limit, this can be hardcoded but custom setting will be better). Is it possible to fix it? Currently if 40C is hit, thermostat will turn of completely and not continue work. For example if I’m on vacation and this happen, i will come to house from vacation and house is completely frozen. Thank you.
I understood you right away, so I suggest you choose an NTC sensor and set the temperature you need to keep on the floor. The disadvantage of this method is that you need to use an additional temperature sensor that will be involved in complex automation (example W100+NTC).
The W100 can work as a thermostat (you control the temperature of the floor control), but must be untied from the W500 (as an independent sensor)
At the moment, it is not possible to use NTC+built-in sensor simultaneously.
