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Honeywell 97 4543

My heater is set to come on if the house falls below 69 but it is not coming on and when I turn it on manually it seems to blow cool air. I changed the batteries yesterday and it is hardwired. Any ideas?

Posted by Anonymous on

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6 Suggested Answers

6ya6ya
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Posted on Jan 02, 2017

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  • 1 Answer

SOURCE: honeywell deluxe programmable thermostat 69-1402m

Solution #2 as above worked (thank you very much!) to get to the programming mode, but on mine keeping Function #13 on the default setting of "0" maintained the AIR.  Toggling the Temp button to "1" changed the system to conventional on/off at the programmed times.

Posted on Feb 07, 2008

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  • 22 Answers

SOURCE: Bought 44155c hunter thermostat air won't turn on.

If unit worked before you tryed changing t-stat then its possible the t-stat wires are shorting each other out.take t-stat back off cut back wires a good 6 to 10 inches or if you dont have that much wire to play with just cut back as far as you can and make sure there is no bare wire touching each other ,then just to test unit to make sure its working ok twist yell.,red,green together this should bring both units on and should blow cold.if this works up to this point on the new stat read directions closely there might be a jumper wire in the stat that needs connected usually from y1 to w1 you would install a jumper wire .see if this helps if not write back i have 1 other solution.i hope this helps

Posted on Sep 15, 2009

Therinnaiguy
  • 1420 Answers

SOURCE: my heater blows cold air. any ideas?

Your unit has a diagnostic light on the circuit board. You need to look thru a small viewing port to see it. Once you count the number of b links, remove the lower panel and look at the wiring diagram for an error code chart. Then read the following to give you some ideas what to do.

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).

Posted on Dec 01, 2009

  • 408 Answers

SOURCE: how do you set heater to work?

http://www.honeywellcentral.com/ssi/pdf/honeywell-commercial/oil-filled-heaters.pdf

That is the manual you need. Hope it helps. If you need anything else, let me know.

Posted on Feb 20, 2010

  • 587 Answers

SOURCE: how does one set a Honeywell ultrastat thermostat

Go to honeywell.com
Under red welcome sign
Bottom red highlighted box literature/image search
Type in thermostat model number
Click on arrow to right
Then click on the PDF files owners manual / installation instructions
If you can’t find what you want, the bottom left and bottom of web
Page, they have homeowners assistance and Home products to get the help you need.

Posted on May 11, 2010

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3 Answers

Need to change thermostat from Celsius to Fahrenheit


The first link is operators manual.

The second is installation and contains the procedure to set many functions including the display temperature.

https://customer.honeywell.com/resources/techlit/TechLitDocuments/69-0000s/69-2577ES.pdf

See page 15 function set 14. This sets F or C temperature
https://customer.honeywell.com/resources/techlit/TechLitDocuments/69-0000s/69-2578ES.pdf

hope this helps?
s-l225-dmbde0w01a5yu2mfdv43xlfn-4-0.jpg

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