Question about Honeywell Programmable Thermostat Heater

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WHERE TO CONECT THE 2 WIRES TO THE NEW THERMOSTAT

I HAV 2 WIRES THAT WAS CONNECTED TO OLD UNIT THAT CONTROLS A GAS HEATER.
WHERE SHOULD I CONNECT THESE 2 WIRES ON THE NEW UNIT?

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Connect one to Red, R or Rh.
Connect the other to White or W.

Posted on Jan 09, 2009

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2 Answers

My existing thermostat is a Electromode for baseboard heater. The wires that are connected to the old unit are 2 black and 2 white wires. How do I go about connecting the new Honeywell??


U need to find out what those connections were for on the original thermostat and then rewire the new thermostat to conform.

Mar 14, 2016 | Thermostats

1 Answer

I installed the RTH 230B thermostat, Theheat only works when set to the cool mode, I only have gas furnace(no ac unit). My old wires are Red, white, green and blue. What wires go where?


Hey jim Try....RH/RC jumper (connected with a small piece of wire)...RH/RC=RED...W=WHITE...G=GREEN blue=unused... should give heat only (in heat mode) no ac..tks

Nov 12, 2011 | Honeywell Programmable Thermostat Heater

1 Answer

I just purchased a house with brand new furnace wired to a RTH2300 Honeywell thermostat. It only has two wires running to it. I can't seem to get it to work in "manual mode"-where I set it on...


?? Connect Wires 5.

Labels don't match?

If a wire does not match any terminal on the thermostat,

see next page.

Quick Installation Guide

6

Alternate Wiring

If a labeled wire does not match any terminal

designation, see diagram below.

Do not use C, C1 or X wire. Do not use B wire if you already

have O wire. Wrap bare end of wire with electrical tape.

This thermostat cannot be used if your old thermostat had

any two of the following wires: R, RC, RH, 4 and V.

Place a jumper (piece of wire) between Y and W if you have

a heat pump without auxiliary/back-up heat.

?? Connect Wires (cont'd)

Programmable Thermostat RTH2300

7

Set jumper JP1, on the back of the thermostat, if you

have connected a wire to the G terminal.

Incorrect jumper setting: An incorrect setting is

noticeable in a gas or oil heating system. When heating

starts, you will initially feel cold air coming out of the vents

as the fan is running before the furnace has enough time

to heat up the air.

?? Set Heating Fan Control 6.

HG Leave the jumper in this factory-set

position if you have a gas or oil furnace.

HE Place the jumper to this position if you

have an electric furnace.

JP1

Quick Installation Guide

8

Set jumper JP2, on the back of the thermostat, if you

have a heat pump.

Incorrect jumper setting: The heat pump operation

will be reversed, i.e., it will cool in Heat mode and will

heat in Cool mode.

?? Set Heat Pump Reversing Valve 7.

O Leave the jumper in this factory-set

position if you have connected O wire to

the O/B terminal.

B Place the jumper to this position if you

have connected B wire to the O/B terminal.

JP2

Programmable Thermostat RTH2300

9

1) Install 2 AAA

batteries on the

back of the

thermostat.

2) Align the two

brackets on the

top of the

thermostat with

the corresponding

slots on the top of

the wallplate.

3) Push the

thermostat

against the

wallplate.

4) Tighten the screw

at the bottom of

the thermostat.

5) Turn power back

on at the heating/

cooling system.

Nov 27, 2010 | Honeywell Programmable Thermostat Heater

1 Answer

New thermostat not cooling. Blowing heat instead.


Hello You have only 5 wires? multi stage if so ,is run by something else.Check that RH/RC is jumped out on new stat.Also check that O is not on the B terminal.If there is an A/B select switch set it to O.Emergency heat button dont matter as there is no wire to run it with only 5 wires.

Apr 17, 2010 | Honeywell Programmable Thermostat Heater

1 Answer

I am replacing an old Lennox thermostat with a new Lux DMH110 digital thermostat. My furnace(oil) has only two wires on the thermostat(heat only). I connected the wires according to directions of new...


Make sure on the furnace that you have the same colored wires connected at the thermostat to R and W. Check for good connections at both locations. You can always test to make sure the unit fires by crossing the two wires together. If the unit fires, you have a bad thermostat.

Feb 17, 2010 | Honeywell Programmable Thermostat Heater

1 Answer

Updating old honeywell thermostat with a new honeywell thermostat


check in the unit heater to see what is hooked up most only need to have red from transformer white to call for heat and green to make the fan run in man and somtimes common usually blue or black

May 09, 2009 | Honeywell Programmable Thermostat Heater

1 Answer

Installing Honeywell RTH7000 - I have too many wires!


check to see if the B terminal is on the new t-stat if connect to it , but this terminal refers to heat pumps and is normally use to energize the reversing valve on the outside unit and not used on ac units , but normally the tag O/B is the same terminal on therostats

Oct 26, 2008 | Honeywell Programmable Thermostat Heater

1 Answer

Honeywell RTH 230B Thermostat Wiring


put the jumper back in RC and RH and that should do it.

Aug 26, 2008 | Honeywell Programmable Thermostat Heater

1 Answer

Y1 W1 Wire from older Honeywell to new RTH honeywell


Y1 means for cool and W1 means for heat. Connect accordingly.

Aug 11, 2008 | Honeywell Programmable Thermostat Heater

2 Answers

Thermostat installation


On paul 306, I don't have any info on you're system, but the old thermostat that has the smaller wires with the colors you described is a low voltage (24volt) controls. The new one you purchased sounds like it is for a system that is made for line voltage (120 volts or more) connecting this to the unit may have bad results. This also may apply to GUEST.
COACOOCHEE, the white and black coming into the box is the line, even though white should not be used for line, the connections for the other side of the thermostat is the load. The new thermostat you have be a single pole break as opposed to the old one may be a double pole. You should have a meter to check the voltage coming into the box, it may be 120 or 220 depending on what you have. Without any more info I cant be sure, but you may be able to connect the black wires to the switch and the white together. But it would be wise to test with a meter to be sure before doing this.

Nov 16, 2007 | Honeywell Programmable Thermostat Heater

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