HomeRefurbers

My old thermostat. . .

Bookmark And Share This Page

« back to Skill Sharing forum

Topic by MailmanShawn posted 48 days ago 326 views 0 times favorited 4 replies Add to Favorites
View MailmanShawn's profile

MailmanShawn

2 posts in 48 days

48 days ago

Is out of the wall, but only had one of the two wires labeled. So I know one wire is a “B” but the other is a mystery. Can ANYONE help me identify this other wire, or tell me how to so I don’t burn down the house? ANY help would be greatlly appreciated.

Mailman Shawn

View Dan Lyke's profile

Dan Lyke

53 posts in 232 days

47 days ago

Probably worth putting a volt meter across those two wires to see what they’re reading, but thermostat controls are usually really simple: Connect the wires, the furnace turns on, disconnect ‘em, it turns off.

-- Dan Lyke, Petaluma California, http://www.flutterby.net/

View MailmanShawn's profile

MailmanShawn

2 posts in 48 days

47 days ago

I have a new electric thermostat, and it has 7 possible coded inputs. Therein lies the problem.

View tenontim's profile

tenontim

137 posts in 232 days

47 days ago

I take it that you only have a heater hooked to the thermostat. The new electronic thermostats will control you heat, air, ventilation fans and coffee pot. Like Dan said connect them, it goes on, disconnect, off. If you look at the instructions for your thermostat, it should tell you which one to connect for just the heat. Usually these wires will just be completing the circuit to a relay, which does the rest.

-- Tim - http://www.tmuli.com

View Dan Lyke's profile

Dan Lyke

53 posts in 232 days

46 days ago

On your new thermostat and its 7 connections, I’m not sure how those things are set up these days, but if one is “ground” then use a volt meter in “DC” mode to see if one of the wires you’ve got is positive and one is negative. Plug the negative one into the “ground” pin. If you don’t get a solid reading off the wires, the furnace is putting out AC on those wires and you’re on your own.

-- Dan Lyke, Petaluma California, http://www.flutterby.net/

You must be signed in to reply.

Your Online Home - Your Support Is Greatly Appreciated - Your Showcase - 3 Ways To Help, Financially - Your Community

StoreApparel StoreMake a Donation
  • Advertise with us

DISCLAIMER: All views and comments posted by members are not necessarily those of HomeRefurbers.com or of those working on the site.

Latest Projects | Latest Blog Entries | Latest Forum Topics

LumberJocks.com :: woodworking showcase

Latest Projects | Latest Blog Entries | Latest Forum Topics

GardenTenders.com :: gardening showcase