Question about Honeywell Heating & Cooling
Two black wires on thermostat - L1 AND T1 20 amp wiring leading into box - red and black leads 20 amp wiring leadng out of box - red and black leads Do I connect two red together to one thermostat wire and two black to other and does it make a difference if it is L1 or T1
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
SOURCE: wiring on thermostat tl7235a1003
OK, here's my guess at this...I hope someone more knowledgable will confirm or correct me.
A line voltage thermostat switches the power to the baseboard heater. In other words, it's just like a wall light switch except it activates and deactivates based on the temperature.
I think your old model CT62 was wired exactly like a light switch. The hot wire to the light is broken then run to the wall switch and then back to the light so there's no neutral wire at a light switch box. This worked fine for your CT62 because it did not need power, it only needed to switch it.
The new model TL7235A1003 requires electrical power because it's programmable so you need both a hot wire and neutral wire at it's installed location. In addition you also need 2 wires leading to the baseboard heater so the thermostat can supply it's power.
I believe L1-L2 are to be connected to the hot/neutral wires, and the Load wires go to the baseboard heater.
If I am correct you will not be able to use this thermostat without some re-wiring.
Posted on Nov 27, 2007
both thermostatats will have terminal designators R,W,Y,G, possibly O/B, C, W1,W2, Y1, Y2, etc.
Simplest method is to remove wires from old stat one at a time. mark where they came from and then install at same desinated terminal on the new t-stat. Hope this helps. be sure to shut off power supply to the unit (furnace) first. The wire coming to the R (RH,RC) terminal is the 24 volt a/c hot, all others are feeding back to perform given function.
Posted on Dec 23, 2008
You will have to have schematics from the old wiring diagram. Then you will have to confirm its consistency with actual old wiring before you can be sure that the wires run to the proper places on the old heater and a/c system. This sounds like a gas furnace and is simpler than a heatpump. Once you know what distinguishes the wires with the same color, you should label them and then you may call them a different color if they were wired with wrong wire colors. You may be in luck if you go to the furnace control box an look at the terminals.. They are usually labeled with a R for Red and W for white and Bl for Blue and B or Black. If you have other colors on these then it sounds that it was wired with wire spare wire by someone who knew what they were doing but neglected to leave a path for someone else follow.
You may be able to use a continuity tester of circuit tester to id these wires that are in question...
ie, once indintified, you can match with the requirements of the new stat.
Posted on Jan 13, 2009
SOURCE: Household Thermostat Replacement
you have to configure the thermostat to run the fan when there is a call for heat. look at the installation instructions and they shoud ask you if it is gas or electric heat if its electric then you are gong to have to configure it to makr e the fan come on with the heat. Good luck
Posted on Jan 25, 2009
Tips for a great answer:
Sep 11, 2015 | Honeywell CT31A - Economy Heat/Cool...
Feb 13, 2011 | Marley Electric Hydronic Baseboard Heater,...
Apr 06, 2010 | Honeywell Electronic Programmable...
Dec 16, 2009 | Honeywell Heat/Cool Thermostat
Nov 27, 2009 | Honeywell Programmable Thermostat Heater
Jul 08, 2009 | Honeywell Heat/Cool Thermostat
Jan 10, 2009 | Honeywell Focus 6300B 5-2 Days...
Dec 20, 2008 | Honeywell Electronic Programmable...
Nov 27, 2007 | Ingram GMS90904CXA Heater
606 people viewed this question
Usually answered in minutes!