Electrical Wiring in the Home ceiling heat, heat inc, thermostats

Electrical Wiring in the Home ceiling heat, heat inc, thermostats

Electrical Wiring in the Home /ceiling heat

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Expert: Don Beck — 1/23/2007

Question

Don,

I took the wires apart as you instructed. There is 3 sets of wires 2 red black and white and another black and white set. The black and white coming from the panel the black reads hot 125 amp. If you try to read the black and white together your reading is almost nothing. The rest read nothing.

When I had it hooked up the top red wire was reading 125 amps and the bottom two would read 125 amps when thermostat was turned on. Also when it was turned on the ones in the other two rooms would read the same even if they were turned on or off. I don’t know if this means anything.

Also I took apart the front of the house and it is reading 125 amps with the thermostat on or off. And so does the other room it is hooked too. Also that one it only has two rooms and on the last one the red wire is on the top as usual and the black wire is on the bottom. I’m not trying to confuse but on the back side of the house the last one is red on top and white on the bottom. I don’t think it was ever taken apart and messed with I think it was always like this. I hope this helps some. Thanks

The text above is a follow-up to.

——Question——

Don,

Here is the thermostat model. and other info.

Ceiling Heat Inc

CHT-S1-22 amp

The text above is a follow-up to.

——Question——

Don,

Now I understand. The thermostats have a red wire going in the top. #1 has two white wires at the bottom. the black wires are wire nutted to a red wire leading out. #2 has two white wires at the bottom and the black wires wire nutted to a red wire leading out. # 3 has only one white wire on the bottom and the black wire is wire nutted leading out. If I cannot find a anything loose should I just pull it apart and atart over again like you suggested start with #1 thermostat and make sure it works before I go to the next one. Thanks

The text above is a follow-up to.

——Question——

Don,

I checked the fuses they are fine. There is power to all the thermostats. There is no splices in the attic they all connect to the thermostats. When I pulled the two fuses for the back half of the home that goes to the heat which is the kitchen, bathroom, and bedroom it shut the power down so I know I have the correct fuses and they are working. The first thermostat in the kitchen has a red and two white wires also the same in the bathroom and the has one red and one white. Thanks

The text above is a follow-up to.

——Question——

Don,

I have a problem with my ceiling heat. The front half of the home is working and the back half is not. This is on a fuse box and power is going to the thermostats. I checked for power at the box and at the thermostats. I took one of the thermostats off and put on a new one to see if that made a difference and it still didn’t work. Thanks

——Answer——

Hi James,

Since you checked for power, I assume you have a voltage tester, of some sort.

Double check the wires connected to each of the fuses that feed the system and make sure the fuses are good. Sometimes they look OK, but are blown.

Check the wires coming into the thermostat box from the fuse panel and see if you have power coming in. If so, turn the therm up and see if you have power leaving the therm to the ceiling.

I am assuming this is a 220 volt operation so make sure you check both hot wires coming in from the panel and both hot wires going to the ceiling.

Do the wires to the ceiling heat connect directly to the thermostat, or are they spiced in a box somewhere, like an attic?

If there is no broken wire in the ceiling or the walls,and a broken wire would be rare, we can figure this out.

——Answer——

James,

OK, we know we have power coming into the thermostat.

There should be 4 wires in the box, not counting the grounds(green or bare)

2 coming from the fuse panel, and 2 going to the heating cable. Where the 2 wires connect to the thermostat, that part of the thermostat needs to be checked d with a voltage meter to make sure power is leaving the thermostat. If it isn’t then thermostat is defective, if it is the problem lies in the heating cable somewhere.

——Answer——

James,

Electrical Wiring in the Home ceiling heat, heat inc, thermostats

My fault, I thought we were only speaking of 1 thermostat.

So, The power comers from the fuse panel to 1 of thermostats(#1) and then from that thermostat to another thermostat(#2), then from # 2 to # 3.

The power is leaving the panel and arriving at #1. I suspect the connections in # 1 are loose if that thermostat and the others downstream are not turning on the heat.

The loose wire or wires can be in any of the thermostat boxes that are not working.

——Answer——

James,

1 bad therm should not affect the others. The power comes in on the top of therm,then jumps to power the next therm. The bottom wires out to the heat ceiling wires would only be affected if the Therm was bad.

I believe we have established that there is power coming into all 3 therms at the top. So, another thing to check is some therms have only 1 wire coming in the top to a terminal, and another wire going to the heating system connected to a bottom term. The other hot in and heat out are connected together with a wire nut. This wire nut may be loose.

If we don’t have any luck with the way we are heading, we’ll just take everything apart and start from scratch, wiring up 1 at a time.

——Answer——

James,

If nothing loose is found, our best option is to start over. Before removing any wires from the therm, make sure you mark them as «In from panel» and «out to heater wires»

so we know which is which.

Also, if you could send the make and model # of the Therms, I’ll double check the wiring diagram for that unit so there are no slip ups.

——Answer——

James,

I can’t locate the diagram for that particular thermostat so we’ll fly blind.

We need to remove the wires from the thermostat that is closest to the fuse panel. When this is done and all the wires are hanging out of the box, 1 pair in the same cable should give you a reading on your voltage tester.This will be the pair that is coming from the panel. When we know that much, we can move on to the next step.

There should be 3 pairs of wires in the box; the pair that reads hot and 2 other pair. Is this correct?

ignore the ground wires for now(bare or green)


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