Lennox LED Lights Constant On - http://www.hvacmechanic.com/ Forums
Original message
| ACBWrap
 |  "Lennox LED Lights Constant On"
, posted Sat 25 Oct 11:34  
Lennox 80UHG3-75A-1. Blower is trying to come on but doesn't. It tries to start for a couple of seconds, stops and then does it again for about 5 times and then stops. When it stops I get both Green LED Lights are constant on. The Diagnostic Code for this is ON "Circuit board failure or control wired incorrectly". The unit has been working fine for years, so I figure it's wired correctly.
Is the Circuit board the problem?
I have good homeowner skills, can I replace it myself?
Any insights?
ACBWrap
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Replies:
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| yuri
| "Re(1):Lennox LED Lights Constant On" , posted Sat 25 Oct 12:10
Sounds like a bad circuit board or something like a bad thermostat aggravating it. I would call a Lennox tech to check it out and tell you the real problem. The new board may be a retrofit with different wiring/cables and not a DIY project. I am a Lennox tech.
Yuri
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