Hi,
In my bathroom I have an in screed heating cable kit, 400watts. All has been well for 6 years, until recently.
The thermostat, an Aube TH132F, has started switching off when the heating kicks in, it then switches back on and stays on until the load kicks in again, then repeats the cycle.
Upon inspection, the relay in the backhousing does smell a bit squiffy. Testing the circuits reveals a steady 239v in, probe reads 10.3k ohms, floor load impedance is fluctuating though, which struck me as strange. It dances constantly on the meter, between 39ohms, and 62 ohms. This seems to low to me for a 400w kit.
The thermostat is located in the room next door, as not suitable for in bathroom use. It is a floor sensor only stat, and the floor probe is located under the bathroom floor. The cables are hidden in plastered in conduit, underneath the laminate floor of the room next door, also with underfloor heating, and into the bathroom. So nothing is easy access and I thought best to seek advice before pulling things apart to check.
Do you suspect a problem with the cable? Or could there be another area to investigate between stat and cable kit?
Many thanks
Jamie
In my bathroom I have an in screed heating cable kit, 400watts. All has been well for 6 years, until recently.
The thermostat, an Aube TH132F, has started switching off when the heating kicks in, it then switches back on and stays on until the load kicks in again, then repeats the cycle.
Upon inspection, the relay in the backhousing does smell a bit squiffy. Testing the circuits reveals a steady 239v in, probe reads 10.3k ohms, floor load impedance is fluctuating though, which struck me as strange. It dances constantly on the meter, between 39ohms, and 62 ohms. This seems to low to me for a 400w kit.
The thermostat is located in the room next door, as not suitable for in bathroom use. It is a floor sensor only stat, and the floor probe is located under the bathroom floor. The cables are hidden in plastered in conduit, underneath the laminate floor of the room next door, also with underfloor heating, and into the bathroom. So nothing is easy access and I thought best to seek advice before pulling things apart to check.
Do you suspect a problem with the cable? Or could there be another area to investigate between stat and cable kit?
Many thanks
Jamie