Underfloor heating only luke warm

For clarification its the thermostat thats showing 12 degrees C which is connected to a sensor in the bathroom floor. No gas central heating is currently switched on.
 
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For clarification its the thermostat thats showing 12 degrees C which is connected to a sensor in the bathroom floor. No gas central heating is currently switched on.
As I asked, are you absolutely certain that it's displaying the floor, rather than the room, temperature?

Whilst the thermostat is obviously controlling the UFH, it wouldn't be unreasonable for the controller to be measuring and displaying the room temperature, particularly given that some people try to heat a room with UFH.

Kind Regards, John
 
…further, many thermostats can sense, display and control the mat by input from the room temp, the floor probe, or both.

these are usually choices in the setup menu. Make sure that yours is set to floor probe only.
 
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Good points chaps. Think I'll have to consult the Heatmat helpdesk
Indeed - or the documentation.

As I (and TTC) have implied, I wouldn't be at all surprised if what is being displayed was room (not floor) temperature.

However, can you not tell just with your hand? In comparison with a room temp of around 12°C (which is quite cold, but probably reasonable for an unheated UK house in November), the floor ought to feel quite warm, possibly even fairly 'hot', 'to the touch' after the UFH has been on for 4 days.

Kind Regards, John
 
The floor is set to 24C Manual ...
Yes - but, as said, even if "set" at 24C, it may not be able to get to anything like that temp if the room is cold.
... and feels luke warm, def not hot or even very warm.
24°C is still 13°C below body temp, so will still feel fairly 'cold' - but it should, for example, feel appreciably 'less cold' than, say, a wall in the same room.

Kind Regards, John
 

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