Radiator thermostat (knob) measures completly wrong temp
since a week (or more?) the know in granny's room does not measure the correct temp
heating is turned on in schedule as of 8 pm till 10:30 pm, starting most of the time at 12 degrees, heating to 19 degrees
but after 2.5 hour temp is not reached according to the radiator thermostat
so radiator is open for heat, room is way above 23 degrees .. but the thermostat still says that its like 18 degrees in the room
checked if there was a device offset set by accident .. nope µ
could it be that the know is defect or could it be another cause ?
Best Answer
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Answers
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have you another smart TRV valve to swap with?
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good idea .. i have one still sitting here .. will try that
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Could it be that the thermostat is located in a cold part of the room? Is there a draught around it?
Do you have a way of independently measuring the air temp beside the TRV?0 -
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swapped the valve, same story
I have a valve left over, will configure to measure temp in room other location
feedback to follow
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@VanDaeleC
In the room setup, make sure the temperature sensor is the device that you think it should be (and not from another actuator or room sensor elsewhere).1 -
I hooked up a spare SRT, lets see what it gives
In my 'bureau' or 'office' the temp that was handled all the time iwith the knob being installed at the radiator pointed out 20 degrees most of the time, sometimes 20.7, but pretty ok ... only ... the know that i have configured for temp measuring showed met 22 degrees, same room 2.5m by 2 meters .. small office, me sitting in the office working .. so that's a 2 degree difference. Difference is that the radiator knob is at 15 cm height from the floor level, the other measuring srt is at 90 cm height ... distance between the two is 1 m .. 2 degrees of is 10% and is a lot for me. I now have put the measuring srt in the room of granny where everything goes completely wrong. Her window is open now, the srt in the sleeping room downstairs tells me that the temp is 15 degrees now, with the window open. Temp is set at 10 degrees until 8 pm, then it should kick in until temp is 20, of course the window will be closed in the mean time. I have laid the measuring srt in the room, first it said that it had detected an open window .. correct for this time .. now the temp is slowly decreasing on the measurement know .. I'll keep a watch on the temp and compare.
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