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earl kay 01-13-2011 08:29 PM

Carrier furnance
I HAVE A CARRIER FURNANCE THAT KEEPS LOCKING OUT. I replaced the board, hot surface ignitor, and pressure switch. at each of these points of replacemant the furnance runs fine for about one day. Then I have to , or my wife has to turn the emrgency shut-off to off then to on off-to-on, a few times then it runs for a day or night and then we're back to the same thing. please help!

hvactech126 01-13-2011 09:20 PM

Have you watched the system while starting to heat? Have you noted what it is or not doing or what it is getting hung up on that is causing the lockout? Have you cleaned your flame sensor? Have you replaced your filter?

beenthere 01-14-2011 04:49 AM

Look to see if it has an error code LED, if so look to see what code its flashing before you turn the power off next time it locks out.

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