Welcome! Here are the website rules, as well as some tips for using this forum.
Need to contact us? Visit https://heatinghelp.com/contact-us/.
Click here to Find a Contractor in your area.

Lennox A08 Fan Error

Cold_in_AK
Cold_in_AK Member Posts: 6
in Gas Heating
Hello all, 
I have narrowed down my issue from a previous post, new control module and new user interface and now i can actually SEE the error that has been stopping my boiler from running.

I have a Lennox gwm-ie 100 wall mounted boiler that is randomly throwing an A08 fan error lockout code, even though the fan speed doesn't change, positive pressure is maintained and there is no wind at the flue exit. No obstructions in the flue, flushed it with water, and have primed the condensate drain with water. Have had 3 seperate technicians out to look at it, as well as a friend who is a journeyman HVAC professional.  No ideas from any of them on what could be causing the error, and all of them have said something to the tune of "i don't want to tell you to buy a new blower because it is an expensive part, and i honestly have no idea if that will fix the issue."

Really hoping someone else has encountered something like this and has some insights for me. Thanks all in advance!

Comments

  • HVACNUT
    HVACNUT Member Posts: 6,337
    edited October 2023
    It would've been easier to download the manual instead of coming here and me looking it up for you. That'll be $47.50 please. 
  • kcopp
    kcopp Member Posts: 4,472
    Possibly a bad connection on the wiring harness
  • Cold_in_AK
    Cold_in_AK Member Posts: 6
    HVACNUT said:
    It would've been easier to download the manual instead of coming here and me looking it up for you. That'll be $47.50 please. 
    I had to type out the discussion block twice because I had to close the window, my bad for not including the fact that i also have the ability to google, and already ran through the 2 different troubleshooting diagnostic trees available for this model with the multi-meter. No breaks in continuity in either harness, new boards all around. Hence my desire to not have to buy a new blower motor if possible as the cost of repairs at this point is approaching the cost of a new boiler. Had a comment about the snark, but honestly I'm just too tired at this point and want to get this sorted. 
  • SuperTech
    SuperTech Member Posts: 2,430
    It looks like you are at the point of needing to make the decision about getting a new blower or a new boiler. 
  • HVACNUT
    HVACNUT Member Posts: 6,337
    Cold_in_AK said:
    HVACNUT said:
    It would've been easier to download the manual instead of coming here and me looking it up for you. That'll be $47.50 please. 
    I had to type out the discussion block twice because I had to close the window, my bad for not including the fact that i also have the ability to google, and already ran through the 2 different troubleshooting diagnostic trees available for this model with the multi-meter. No breaks in continuity in either harness, new boards all around. Hence my desire to not have to buy a new blower motor if possible as the cost of repairs at this point is approaching the cost of a new boiler. Had a comment about the snark, but honestly I'm just too tired at this point and want to get this sorted. 

    Where did the troubleshooting chart take you?
    GGross

Categories