Question about Honeywell Programmable Thermostat Heater

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Zone valve on my Burnham gas furnace keeps running hot continually. How do I manually shut it off? All wires look good and are connected. The other 2 zones work fine.

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ASSUMING THAT YOU HAVE HOT WATER SYSTEM,IT IS TIME TO THINK ABOUT REPLACING THE ZONE VALVE.IF YOU DISCONNECT THE ZONE VALVE,THAT AREA WILL NOT GET
ANY HEAT.IF YOU CAN GET THROUGH REST OF THE HEATING SEASON WITHOUT IT,TURN OFF THE POWER TO THE ENTIRE SYSTEM.THEN DISCONNECT THE POWER SUPPLY TO JUST THAT VALVE.BE CAREFUL TO PUT WIRE NUTS ON ANY EXPOSED BARE WIRES.YOU CAN THEN RESTORE POWER TO THE MAIN SYSTEM.

Posted on Mar 07, 2009

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1 Answer

Why does furnace fan keep running even with all thermostat wires disconnected?


The fan control circuit at the furnace could be defective but there also could be a separate manual switch controlling fan power.

Dec 01, 2015 | Thermostats Thermostats

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I installed the thermostat via instructions. The fan will not turn off and even when all of the thermostat wires are disconnected, it continues to run


If the thermostat wires are in fact disconnected, there is either a short between the Red and Green wires (wires of any color connected to the R and G terminals) between the thernostat and the furnace OR the fan relay itself could have inadvertantly stuck closed.

My bet is the short happened when the wires were pushed back into the wall opening right behind the subbase.

Try removing ALL wires again and removing the sub-base from the wall and separating the wires back for a few inches (if length is available). You may find the fan shuts off.

Dec 01, 2015 | Thermostats

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Can't get the gas furnace to heat.


All York/JCI thermostats made by Venstar

The setup is probably incomplete. Did you configure the thermostat for a 2 stage heat pump? The heat pump should have a thermostat wire connected to R, C, Y1, Y2, and O, that makes 5 wires. I suspect you are only using first stage compression and or first stage blower speed.

Nov 23, 2013 | Source1 CTS Series Model S1-THPU32P7S...

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

Furnace cuts off before reaching set temp.


You can make sure it is not the thermostat by crossing or jumping the R and W terminals (or associated wires) together. This will keep the furnace calling for heat. As it is approaching set temperature, get in front of the furnace and inspect the air filter to make sure it is clean, watch the control module for any error codes that may be turning off the system prematurely.

On a call for heat, the 24 volt thermostat sends a signal to the control module. The control module will indicate a call for heat with a light on the control either blinking or remain solid depending upon model. The inducer (exhaust) blower will purge all gasses from the furnace and pressurize a pressure switch. Once the pressure switch tells the module to continue, the electronic ignition will energize and send 120 volts to the igniter. The igniter will glow and you will be able to see it if viewed thru the small inspection port. Once the igniter gets hot enough, it sends a signal to the module opening up the gas valve (24 volts). Either a pilot will come on or the burner tube will ignite then spread the flame to all burners. Lastly a safety sensor will be looking for a certain temperature within a few seconds and the furnace will continue to operate and the room air blower will turn on in a minute or two.

What could go wrong? The unit will not run if there is no signal from the thermostat (bad thermostat or broken wire), the control module does not sense a signal from the thermostat (bad control), the inducer does not energize (bad motor), the pressure switch does not close (blocked vent piping, bad switch, plugged condensate hose), the igniter does not energize (bad control, bad igniter), the gas valve does not open or there is no gas (bad gas valve, broken wire, no gas), the pilot does not light (dirty pilot), the burner does not light (bad burner, plugged orifice, not enough combustion air), the flame does not spread to each burner (bad flame spreader, dirty flame spreader, more bad burners), the flame safety sensor does not detect flame (dirty or bad flame spreader, bad flame sensor, broken wire, bad control), or the room air blower does not energize (bad fan motor, bad control).

Mar 07, 2010 | Honeywell Programmable Thermostat Heater

3 Answers

My new honeywell T87N/T87K round is not turning on my heater


check for voltage then check connections sometimes the wire breaks and no power gets to the stat

Jan 06, 2010 | Honeywell Programmable Thermostat Heater

1 Answer

I have a red and a white wire but the heater wont


It sounds like you have at least 2 zones in your system. If this is a normal hot water boiler system with zone valves. When you have your thermostat call for heat it closes the 24 volt circuit that then energizes the motorized zone valve for that thermostat. In that motorized zone valve there is an end switch that will close and complete the circuit to the boiler. Zone valves when they start to clog up with mineralization will not allow the motor to go far enough to close the end switch, so then the boiler and circulating pump will not come on. If this is the case then you need to have the zone valve replaced.
Also make sure your wires at the thermostat are connected correctly. One thing you could also check at the thermostat to make sure it works or not is to jumper the 2 wires and see if your system starts up or not. If the system starts up then the thermostat or its subbase is defective. Hope I was of help to you!! Good luck!!

Nov 29, 2009 | Honeywell Programmable Thermostat Heater

1 Answer

Honeywell round thermostat Model #T87F continuously running


you either have 2 thermostat wires bare and touching or a zone valve stuck open

Feb 28, 2009 | Honeywell Programmable Thermostat Heater

2 Answers

FURNACE CYCLING ON AND OFF ..


I would check furnace filter first. If that looks good i would check the thermostat. To check thermostat turn power off to furnace then take thermostat off the wall and connect wires labbled R & W together then turn power on and check furnace to see if it runs for more than a couple of minutes. If so install a new thermostat. If that doesn't work let me know and i can give you a couple more thing to try.

Jan 17, 2009 | Honeywell Programmable Thermostat Heater

1 Answer

Honeywell ST6400C programmer doesn't switch off


Since you have three on/off timing modes could there be an overlap in the times?
The wires in the unit might be crossed. (don't always assume the contractor who wired maintained the correct colors , I have a friend who blew out a heating pipe because when a replacement motor valve was installed it was never wired right and the plumber assumed the colors were correct so no overtemp shutoff created steam in PVC pipes, OPPS)
There fore maybe one is still coming on. Do you have more than one heating zone? IF so see below

I guess the main question is why manually turn it off? why not use the program.

I will assume your heat is know as forced hot water heating. My house is multizoned however when the zone calling for heat turns off (zone valve closes) I installed a bypass valve in the lowest zone in the house, and reduced the circulator low shut off temp to 130 F which means even though the heat isn't on my circulator will continue to run dumping this excess heat in the lowest part of house to rise through house. (the spring loaded water valve allows the heated water to flow into this zone )We do have two thermistats. And even though the lowest one is not calling for heat the radiators are hot when the excess is dumped into this zone. So investigate and see if your system might be similar. (multizone).

Investigate your wiring, reprogram, replace any battery backup.

Dec 18, 2007 | Honeywell Programmable Thermostat Heater

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