First post so be kind.
I am a little light on the terminology so I'm going to rely mostly on the pictures to tell the story.
I'm trying to replace my old dial thermostat with a UPM HTM611. It controls a 1000W electric baseboard heater:
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Here is the old thermostat:
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Here is the new thermostat:
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Maybe I'm missing something but it seems like it should be compatible, no?
Here's the wall box:
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There's 3 red wires, 3 black wires (bound together with a wire nut), and what looks like 3 ground wires way at the back (bound together with a wire nut).
Here's what the old thermostat looked like when it was hooked up:
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The old thermostat had a red wire and a black wire coming out of it. One of the red wires from the wall (call it red1) was tied to the red wire out of the thermostat and the other two red wires (red2 and red3) from the wall were tied together and tied to the black wire from the thermostat. (in the picture the two red wires look like white wires but they're just coated with drywall dust)
The new thermostat just has 2 black wires coming out of it. So I simply tied one of them to red1 and one to the tied together red2 & red3. Seemed to work at first. It turned on fine and I was able to adjust the desired temperature. But as soon as the desired temperature went above the ambient temperature the baseboard would kick on but after a couple seconds the thermostat would shut off.
I tried hooking the thermostat to different combinations of red wires (unbinding red2 & red3) but the combination of red1 and red2 was the only one that would turn on the thermostat. And I would get the same result with the thermostat shutting off when the baseboard kicked on.
So far I've left all the black wires alone. Before I start messing with those I figured I'd come here for some advice first. Any thoughts? Do I just plain have the wrong type of thermostat? TIA
I am a little light on the terminology so I'm going to rely mostly on the pictures to tell the story.
I'm trying to replace my old dial thermostat with a UPM HTM611. It controls a 1000W electric baseboard heater:
Uploaded with ImageShack.us
Here is the old thermostat:
Uploaded with ImageShack.us
Here is the new thermostat:
Uploaded with ImageShack.us
Maybe I'm missing something but it seems like it should be compatible, no?
Here's the wall box:
Uploaded with ImageShack.us
There's 3 red wires, 3 black wires (bound together with a wire nut), and what looks like 3 ground wires way at the back (bound together with a wire nut).
Here's what the old thermostat looked like when it was hooked up:
Uploaded with ImageShack.us
The old thermostat had a red wire and a black wire coming out of it. One of the red wires from the wall (call it red1) was tied to the red wire out of the thermostat and the other two red wires (red2 and red3) from the wall were tied together and tied to the black wire from the thermostat. (in the picture the two red wires look like white wires but they're just coated with drywall dust)
The new thermostat just has 2 black wires coming out of it. So I simply tied one of them to red1 and one to the tied together red2 & red3. Seemed to work at first. It turned on fine and I was able to adjust the desired temperature. But as soon as the desired temperature went above the ambient temperature the baseboard would kick on but after a couple seconds the thermostat would shut off.
I tried hooking the thermostat to different combinations of red wires (unbinding red2 & red3) but the combination of red1 and red2 was the only one that would turn on the thermostat. And I would get the same result with the thermostat shutting off when the baseboard kicked on.
So far I've left all the black wires alone. Before I start messing with those I figured I'd come here for some advice first. Any thoughts? Do I just plain have the wrong type of thermostat? TIA