Hi, I'm trying to connect a new programmable thermostat to replace the old analog one. However, nothing seems to work. My father is a retired electrician who is coaching me over the phone 2 states away, but he's been out of the game for almost 20 years and without seeing it, it is a little difficult, so I could use some extra help.
Here's the deal - I have a 4 wire system 2 12/2's coming in. If I run a volt meter over both blacks I get a 240 reading. If I run the meter over either black to either white, or both whites together, my meter reads 0. I have 2 baseboard heaters connected to the thermostat - 8' and a 2'. The thermostat is connected to the original fuse box 'range' fuse with 2 30amp fuses in it. Also connected to that 'range' fuse are 2 outlets and a set of overhead lights.
The old thermostat is a double pole system, as is the new one. The new thermostat has 4 wires. My thermostat has 2 black and 2 red wires. It is a honeywell model livevolt pro 8000 TL8230A. It is rated at 240VAC 50/60Hz 15A 3600W | 208VAC 50/60Hz 3120w. One set of the thermostat wires are labeled 'lead' and the other shows a circle with a tilde in it (AC symbol, I think).
When I connect the thermostat I get no power to the thermostat. The digital display does not come on. I have tried switching the 12/2's in case the wrong one was on the 'lead', but that didn't help either. Normally, I understand that the thermostat has a line from the box and a line to the baseboad, but is that not the case since both black complete the 240 circuit?
Oh, I also tried a new Honeywell RLV430 using the 4 wire connection instructions (it is a two wire non polarity thermostat) which says I should be able to connect both whites to each other and connect each black to each of the thermostat's 2 wires. But, all that did was blow the fuse and trip the breaker.
Any help would be appreciated.
Here's the deal - I have a 4 wire system 2 12/2's coming in. If I run a volt meter over both blacks I get a 240 reading. If I run the meter over either black to either white, or both whites together, my meter reads 0. I have 2 baseboard heaters connected to the thermostat - 8' and a 2'. The thermostat is connected to the original fuse box 'range' fuse with 2 30amp fuses in it. Also connected to that 'range' fuse are 2 outlets and a set of overhead lights.
The old thermostat is a double pole system, as is the new one. The new thermostat has 4 wires. My thermostat has 2 black and 2 red wires. It is a honeywell model livevolt pro 8000 TL8230A. It is rated at 240VAC 50/60Hz 15A 3600W | 208VAC 50/60Hz 3120w. One set of the thermostat wires are labeled 'lead' and the other shows a circle with a tilde in it (AC symbol, I think).
When I connect the thermostat I get no power to the thermostat. The digital display does not come on. I have tried switching the 12/2's in case the wrong one was on the 'lead', but that didn't help either. Normally, I understand that the thermostat has a line from the box and a line to the baseboad, but is that not the case since both black complete the 240 circuit?
Oh, I also tried a new Honeywell RLV430 using the 4 wire connection instructions (it is a two wire non polarity thermostat) which says I should be able to connect both whites to each other and connect each black to each of the thermostat's 2 wires. But, all that did was blow the fuse and trip the breaker.
Any help would be appreciated.
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