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Question

Hey Billy! It's Jennifer in Proctorville Ohio again. You helped me determine, with a pocket knife and a little reading light, that my thermostat was bad. That was a week or so ago. I'm ready to install my new thermostat. It is a Honeywell 3100c. The problem is that my old one, Totaline, model p474-0100, (looks like a piece of junk...but then, I asked for a really simple one when my new Trane system was installed! lol) Anyway, of course, the code letters don't match. The old one has, left to right: R; G; Y1; W2; W1 (which also can use B or O); Y2; and C. I marked each one with the little code papers when I removed the old thermostat, and have attached the new back plate to the wall. The new thermostat codes: E; aux; Y; G; 0; L; R; B; and C. Can you tell me which wires go where? It's supposed to get cold tonight!! lol Thanks, Jennifer

Submitted: 53 days and 9 hours ago.
Category: HVAC
Value: $15
Status: CLOSED
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Optional Information

Make : Honeywell
Model : 3100c

Already Tried:
Nothing...afraid I might hook the wrong do-hicky wire to the right whatchamacallit for heat and turn into a pop-sickle before morning!

Posted by Mark Henley 53 days and 8 hours ago.

Info Request

Hi ,

 

Billy is away I can try to help you get the heat going,

 

Thanks

 

Mark

53 days and 7 hours ago.

Reply

Hey Mark! Thanks for jumping in. Did you get my message with the brands and codes? Anything else I can tell you?

Posted by Mark Henley 53 days and 7 hours ago.

Info Request

Hi,

 

I need to know what type of equipment you have ( gas furnace or heatpump )and which terminals actually had wires on them on the old thermostat.

 

Thanks

 

Mark

 

 

53 days and 7 hours ago.

Reply

Trane elec. heatpump and furnace.

 

I know that when Billy helped me check if the thermostat was bad,I loosened R YG O. R and G for the blower, Y for the heatpump, and O for cooling. I marked the wires as I loosened them today on the old thermostat. Did you get that Left to Right sequence that I sent in my first message?

Posted by Mark Henley 53 days and 7 hours ago.

Info Request

Hi,

 

OK, I have to opt out as I am out of time, someone else will pick it up.

 

Thanks

 

Mark

 

 

Posted by Kenton Guidry 53 days and 7 hours ago.

Info Request

Did your old thermostat have a wire hooked up to the y2 terminal?

53 days and 7 hours ago.

Reply

 

Do I just wait for someone else, or do I need to start over?

Posted by Kenton Guidry 53 days and 7 hours ago.

Info Request

You do not need to start over.

Did your old themrostat have a wire hooked up to the y2 terminal?

53 days and 7 hours ago.

Reply

No, I don't think so. I have written down W1, W2, Y1, R, and G as the wires I took loose. There was one wire, a brown one, not connected.

Posted by Kenton Guidry 53 days and 7 hours ago.

Answer

Your R, Y, and G will connect just like they did on the old stat.

The w2 will now connect to the aux terminal.

Your w1 will now connect to the o/b terminal.

You will need to install a jumper from the AUX to the E.

Make sure you do not do this with the power on.

Turn the power off at the furnace breaker.

Please respond with any questions or comments you may have.

53 days and 6 hours ago.

Reply

Please tell me about the jumper...?

Posted by Kenton Guidry 53 days and 6 hours ago.

Answer

A jumper is a small piece of wire.

Connect the two terminals with some extra thermostat wire.

53 days and 6 hours ago.

Reply

OK, so make a jumper from Aux over to the E screw. Worst case scenario, what can go wrong? I can't kill my heat pump can I?

Accepted Answer

Yep, just run a wire from aux to e.

Does this thermostat have an rc and an rh terminal, or does it just have the R?

Nothing will go wrong. This is the correct way to wire it.

Just make sure the power is off from the furnace breaker.

Picture
Expert: Kenton Guidry
Pos. Feedback: 98.8 %
Accepts: 
Answered: 10/1/2009

HVAC Technician

EPA issued refrigeration license, College certificate, and 7 years in field.

53 days and 6 hours ago.

Reply

Just the R. (The power is off, thanks for your concern. Wouldn't want to be a 60 year old widow found electrocuted with a pocket knife and a booklight for tools in her hand.lol

Posted by Kenton Guidry 53 days and 6 hours ago.

Info Request

lol. I bet you will be fine.

53 days and 6 hours ago.

Reply

I will fine be for sure...lol. But I can tell you that they see you coming in this town, where everyone knows everyone. I had a new thermostat installed by a local professional and he finished by handing me a bill for $438. $200 of it was for his time over and back, 20 min each way and for a trip back to get the thermostat, even though I told them I needed a new thermostat and just wanted a simple one. He assessed the need and then drove back to get it. $99 per hour plus the two trips. It might be in line, I don't know, I just know I can't personally afford it if I can do it myself. Thanks to fellows like you!

Posted by Kenton Guidry 53 days and 6 hours ago.

Info Request

Please let me know how it turns out.

53 days and 6 hours ago.

Reply

I'll let you know tomorrow. Thank you for being so patient and efficient. I will leave a tip for you Kenton. Jennifer

Posted by Kenton Guidry 53 days and 6 hours ago.

Info Request

Thank you very much.

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