troubleshooting honeywell ct87k

isaacadrian

hello, I just connected a new honeywell ct87k1004 thermostat and when i turned the power back onto the furnace nothing happened. it won't turn on. it has only two wires and as i understand it, it doesn't matter where you connect them as long as they are in the w and r connections and not the y.
we had a number of power outages yesterday and i checked the forced air furnace and the pilot is still on.

i turned the temperature to 72 and nothing happened. i did not touch the cycle rate switches since the instructions state that for a gas heater the settings are set in factory.
any ideas as to why it won't turn on the heater???

how do i troubleshoot it. the instructions do not have a troubleshoot section.
any ideas will be greatly appreciated.

thanks

isaacadrian

yellowdog

Does the furnace come on if you jump the wires at the thermostat?

Big Ed_4

I believe in the instructions , when new you need to let it sit to charge the battery .

isaacadrian

1. Jump wires? How?

2.  I connected the thermostat last night and set it at 72. Not started overnight.

Big Ed_4

I believe you need to lower all the way down to charge battery .

If you jump R and W behind the thermostat and the unit turns on , then the problem is in the thermostat . Either wired to the wrong terminals or it is the thermostat ...

isaacadrian

big ed: so i got a piece of wire, disconnected the wires from the thermostat and attached the piece of wire to both and the heater/furnace does not come on! so im assuming the problem is with the furnace??

Jamie Hall

isaacadrian said:

big ed: so i got a piece of wire, disconnected the wires from the thermostat and attached the piece of wire to both and the heater/furnace does not come on! so im assuming the problem is with the furnace??

Not really. Now do the same sort of thing at the furnace. Connect the two wires from the thermostat together ar the furnace control. Now does it come on? If so, the problem may be in the wires. If not -- furnace.

isaacadrian

isaacadrian

Jamie: before I saw your post I went to the furnace to see if there was a reset switch to it. When I opened up the panel I saw that the thermostat lines were charred. Don't know how this happened but am assuming the burner pipe directly below the wires somehow flamed out and charred the wires. The box where the wires go in I am assuming is the one that relays the information to the gas pilot to turn on the gas. The on/off switch at the far side of the box is in the off position. There are wires coming out of this box that go to the blower. 
So I believe that this is why the new thermostat is not working and that what needs to be done is to replace the thermostat wires leading into the box??

Jamie Hall

Well, yes. But. It would also be nice if you have a reliable service person to have them come and at least replace all the damaged wires and find out what might have done the damage.

isaacadrian

I am definitely going to do that. Thank you for your assistance.