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Home Heater / thermostat isn't working

I have a Carrier 58PAV135-16 Home Gas Heating system. Its also a Carrier home thermostat, and it's been acting up lately. it came with the home circa 1996, and recently It's been intermintedly going out. The  thermostat is set at any temperature above room temperature but it wont come on. I can manually get the fan to come on, but when everything is set in auto mode, I get nothing. Any help? thanks. Cold in Michigan...

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  • lupo9 Dec 30, 2008

    Okay. I am going to follow your sequence now. give me a few minutes. 

  • lupo9 Dec 30, 2008

    Okay. so here's what I found out. There isn't an LED code list, but I can tell you what the pattern was. It flashed 3 fast times, then 3 slow times, it repeated this pattern continuously. I followed the process, and after 5 minutes the fan finally turned off with out any other events to report, except the LED now flashes 3 fast, and 1 slow.

  • lupo9 Dec 30, 2008

    I found code list. You may need to increase font, it was copied from PDF.
    It's a  33 
    LIMIT OR FLAME ROLL-OUT SWITCH IS OPEN - If open longer than three 
    minutes, code changes to #13. Flame roll-out switch requires manual reset. 
    Check for:           - Defective blower motor or capacitor. 
    - Dirty filter or restricted duct system. 
    - Loose blower wheel. 
    - Defective switch or connections. 
    - Inadequate combustion air supply (Flame Roll-out Switch or fuse link open). 
    - Open Flame Roll-out Switch, or fuse link. Manual reset or replace. 

  • lupo9 Dec 30, 2008

    I just spent 10 - 15 minutes, it never did anything else, except it is still flashing the 1 and 3 LED . I found the code for that as well. Here's the PDF for that sequence:

    LIMIT OR FLAME ROLL-OUT SWITCH LOCKOUT - Control wthree hours. Reset switch or replace fuse link.  Refer to #33. 


  • lupo9 Dec 30, 2008

    Okay. found it, unhooked wires, pressed the red button in center (there was only 1 roll out switch), it didn't make any sort of clicking or a reset sound, (went down smoothly) and turned power back on, flipped fan switch, waited 90 seconds, and BAM, The Flames Kicked on!, that is fantastic, it appears to be working again, temperature is beginning to raise back to normal thermostat setting. I am extremely grateful and appreciative for your assistance in our time of need...I will share my experience with others. Thanks again...Warm again in Michigan.





  • Danny Clark
    Danny Clark May 11, 2010

    If the pic didnt work here is a link to it.



    http://furnaceparts.com/eshop/products/r...

  • Danny Clark
    Danny Clark May 11, 2010

    OK, here is a pic of a rollout switch





    Thats about actual size.

    It is found on the metal housing around the burners.

    You may have more than one.

    There is a little button right in the center.



    Disconnect power, and push the button on each switch. If you feel/hear a click, that is the switch in question.



    Turn power back on and watch again to see what the unit does.



    Rollout switched detect when the burners flame pattern "rools out" into the burner compartment, instead of properly flowing into the heat exchanger.



    Sometimes they just go bad and trip whenever they detect heat.

    Sometimes the system is dirty and causes exess heat build up causing them to trip. And sometimes you have an airflow blockage or draft inducer fan malfunction and the flame DOES rollout and trips the switch.

    Sometimes a strong gust of wind can blow the flame back into the burner compartment as well. This is rare, but it does happen.



    So, reset the switch/es, reset power and lets see what it does.

  • Danny Clark
    Danny Clark May 11, 2010

    Yes, there is a delay for the fan to turn off, and a delay for the system to turn back on after power disconect.



    Without a code list we will have to manualy diagnose the problem.



    While at the unit, turn it back on and wait untill it trys to come on and tell me what happens.

    (again, expect to wait 5 to 10 min before anything happens.)

  • Danny Clark
    Danny Clark May 11, 2010

    Go to the furnace, see if there is a blinking LED light, if so, count the flashes and note the number.



    THEN turn off power, wait 5 min and turn back on.



    After approx 5 more min the furnace should attempt to start. Pay close attention to exactly what it does, and let me know.



    Also, look for the wiring diagram (usually stuck to the panel sometimes in the info packet) for a flash code list. (if you have a flashing LED)

    Correspond the # opf flashes with the code and let me know that also.

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  • 334 Answers

It is possible that it may happen again. I reccomend having the burners and burner compartment cleaned, including the Heat exchanger.

If you dont, mind, please rate this solution. All the others were clarificatin requests so we could be sure we found the problem. Now that we found it, It would be great if you could rate the service.

Posted on Dec 30, 2008

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