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Hi, I'm Mike G and I'll be assisting you. Do you have a clamp meter? You need to check the amperage on the t-stat load wires while adjusting the setting to see if the t-stat is working. If you don't have one a 2 wire voltage tester will also work for testing the output.
If you only have a 2 wire t-stat and it turns off then it is working if it goes off at different positions depending on the tempature of the room. They do get warm in operation.
One wire is the Line, providing power and the other is the Load wire. The right way to wire the installation would have been to install a 2 pole t-stat. It would cut all power to the baseboard heaters as a disconnect. Your installation has hot wires in the heater no matter the position of the t-stat.
With a single pole t-stat, the load wires are in the heater and only one in the t-stat.
They should. The feed was installed at the heater and one leg was ran to the T-stat. Your t-stat only brakes one leg, thus leaving half the circuit live in the heater.
Having a single pole t-stat makes it necessary to put probes on the leads at the heater. Your reading is the result of the way it was installed, only breaking one wire at the t-stat.
Between leads you should get either 240V or Zero, depending on the stat.
Still here. Zero with the t-stat set where? Turn it up and test again.
Yes, but the t-stat affects the voltage.
If it goes from Zero to 240V, the stat is working.
There isn't more to say on the issue. Either there is or isn't voltage. No voltage, no heat.
That is a 2 pole t-stat. All t-stats for electric heat aren't that accurate. You should just turn it down a little and not off, until you get the temp you want.
Make small adjustments until you get the setting that makes it comfortable.
Set it less and less allowing the heaters to cool down. It will take some time to find the setting you want. Come back when you find it.
It means the t-stat at 50 is actually 70 room temp. There are factors that cause that. Placement of the stat in relation to inside or exterior walls, windows, placement in relation to heaters, design and quality of the stat. I think we have gone as far as necessary in answering your question.
There are many t-stats. I would need to know the make and model number to comment.