Question about Honeywell Programmable Thermostat Heater

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I need to know what the wire labels are supposed to be for a honeywell #LR1620 thermostat. They are not labeled and i bought a new thermostat and do not know where the wires are supposed to go. The old thermostat has a black wire running to the lower left hand side and a white to the lower middle.

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  • ewd_69_420 Oct 04, 2009

    Yes, it is heat only.

  • HANK MCNEIL May 11, 2010

    is your system heat only?

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  • Honeywell Expert
  • 252 Answers

Then it does not matter which goes where but one goes to R and the other to W (or W1)

Posted on Oct 04, 2009

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Posted on Jan 02, 2017

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1 Answer

Honeywell WV8840B1109 How do I remove it


you should be able to pull the bottom away from the wall then lift up to disengage the top. Underneath there are screws to take the base off the wall. You will obviously need to remove the wires also, before removing the base. Make sure the label the wires or take a picture so you know how to install the new thermostat.

Dec 20, 2016 | Heating & Cooling

1 Answer

Honeywell lr1620


I do not believe that LR1620 is a model number, you may need to find another number. Try this link to see if maybe it's your thermostat or not. The stamp LR1620 is actually on multiple thermostats. Hope this helps!
http://customer.honeywell.com/techlit/pdf/69-0000s/69-0107.pdf
Read down the PDF file till you see the instructions on setting the heat anticipator.

Dec 01, 2013 | Honeywell Heating & Cooling

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Replacing a White-Rodgers 1F56-301 with a Honeywell RTH22181039. The WR is so old the wires are not labeled and not sure how to connect.


That is something that someone needs to lay eyes on. You never know how one will color code the wires @ the furnace...let alone through the wall. Someone will have to ohm out the wires.

Nov 24, 2013 | Honeywell Programmable Thermostat Heater

1 Answer

Removed my non programable Honeywell RT 5220D replaced it with a Honeywell RTH6350D to run my Goodman Heat Pump. First I labeled the wires then connected wires as follows: AUX, G, C, O/B (orange wire)...


Leave the factory jumper between R & RC. Connect the wires to the new stat just as you have them labeled. Use a piece of thermostat wire to make a jumper from AUX to E terminals. Your new thermostat should give you instructions on how to access the installer set up. You are going to set it up as heat pump with aux. I see this is 2 days old but if you need any help let me know.

Feb 13, 2011 | Honeywell Programmable Thermostat Heater

2 Answers

I'm replacing my old thermostat with a honeywell


usually you should have 4 or 5 wires....if you have AC then this wire should be Y if not was it connected at all before?...Heating requires only R&W

Oct 24, 2009 | Honeywell Electronic Programmable...

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sounds like you've got bear wires touching at the new tstat

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1 Answer

I need a wire diagram of a central heat and air with a heat pump


W- White (heat)
Y- Yellow (condenser)
G- Green (Indoor fan)
C- Blue (Common 24v)
R- Red (24VAC)
O/B (Only needed if system is a heat pump)

May 07, 2009 | Honeywell Heating & Cooling

1 Answer

I have amanual honey well and I want to change it to a programable honeywell but the two wires on the manual thermostat are not labeled, so I don't know where to connect the wires to in the new thermostat


Wires for thermostat control circuits are normally color coded. Check for proper connections at the furnace and connect the same colored wires that you find at the furnace to the like lettered terminals on the new thermostat. R to R, W to W , Y to Y , ans G to G. R is for power to the thermostat, W is for heating, Y is for cooling and G is for furnace fan operation.

Nov 14, 2008 | Honeywell Heating & Cooling

1 Answer

Manual Thermostat replcaement with Programmable Digital unit.


Hopefully there are markings on the old t-stat as to what terminal is what.
on the honeywell 8000 use the heat pump labeling and then the standard wiring would be
R- red
AUX-white
Y- yellow
B- O/B
C- black
G- green
There should not be a bare wire, it probably just has the insulation stripped back way too far.
You should probably open the furnace and compare the terminal label in the furnace to the wire color. normally yellow and blue pass through the furnace and are wire nutted to wires going to the outdoor unit. In the furnace the white wire will connect to the w or w1 terminal. also, you will need to set the Honeywell stat to have the following parameters.
170-7
190-1
200-0
other parameters that I did not specify, you may read the manual and make your own decision but I recommend factory settings for the other parameters

Jun 14, 2008 | Ruud UBHC Air Conditioner

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