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If I have your information right you have a black wire and a white wire marked red coming to the heater with 240 volts between them. You have a double pole unit mounted thermostat with a red and a black wire. Most double pole thermostats have two red and two black wires on them so I am not sure if you have a double or a single pole thermostat.There are also two wires going to the baseboard heater. One is connected to the element the other to a high limit switch which is then connected to the other end of the element. If the thermostat is a double pole the two red (or load) wires should connect one to each of the baseboard wires. The two black (line) wires should connect one each to the two incoming power leads. If it is a single pole thermostat the one red wire should connect to one of the baseboard wires the black should connect to one of the incoming power wires the remaining baseboard and power wires should then be connected together. Hope this helps
If you take thermostrat back off and connect the wires together will baseboard heater get hot. If not you may have bad heater. If it gets hot your new tstat may be bad. The way you have it wired is correct. Most line voltage tstats have a ground screw. Your 's may not but will work without one .
I hope you are using a Line Voltage Thermostat!! First, make sure that the power feeding the thermostat is coming from a two pole breaker of the correct amperage (20 amp). If you are using 12-2 wire with ground then please mark the white wire with black tape at each end to identify it as a HOT power source and not a Neutral wire (which is a grounded lead). Do the same for the 12-2 wires feeding the baseboard heater from the Line Voltage Thermostat. The wires from the thermostat (One Black & one White w/black tape) will be wired to each one of the two wires (one Black & one Red or two Black wires) at the baseboard heater. It doesn't matter which wire from the thermostat is wired to which wire at the heater, just as long as there is one wire to one and one wire to the other.(eg. Black from stat to Black at heater/White w/blk. tape from stat to Red at heater OR Black from stat to Black at heater/White w/blk. tape from stat to OTHER Black at heater). I have seen baseboard heaters with two black wires or one black and one red wire. Hope this helps, but if you are confused then please have an experienced tech. do it for you.
sounds like it is wired incorrectly at the baseboard heater. BUT if it worked correctly before this, then you may have a bad thermastat. Wiring in two baseboards into one thermastat is a bit tricky, each time I do it I have to think it thru before hand to get it right. IF it has never worked right, again you probably have it wired in wrong at the baseboard.
I am an electrician. You must measure the voltage across the black and red wires. Measuring each wire to the neutral will not cut it. If both your red and black wire are on the same phase the heater will not work.
To double check your wiring, measure the voltage across the two screws feeding your subpanel, they should be 240v or 208v depending on your power company. Then do the same at the breaker feeding your thermostat. Again it should read 240v.
If you have no potential across the screws it is possible that you installed an incorrect breaker. Not all breakers with two screws on them are 240v breakers. There is what is called a twin or split breaker that has two screws that are on the same phase. These are for wiring two 110v circuits, when you run out of spaces in the panel.
Double check everything. This is a relatively easy circuit to wire, even for homeowners. If the heater does not work them something is wrong so do not leave the circuit energized.
DID YOU CONNECT TO TH SAME END YOU TOOK OUT WHEN PAINTING WE ARE DOWN TO THE CONNECTION @ THE HEATER MAKE SURE THE OTHER END OF TH ELEMENT IS CLOSED WITH WIRE NUTS AND TIGHT , LIKE I SAID WE ARE DOWN TO THE HEATER CONNECTIONS SO LOOK THERE
The red and black is power and neutral. Green is just for the ground and that should tie into the ground wire for breaker or power wire . The 2 black wire from thermostat should tie into the two red and black wire from your heater. Just imagine you are wiring 1 heater to thermostat and just add the the next heater the same way
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