Question about Carrier XHB123D X/Y Series Heat/Cool Air Conditioner

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Icleend up the flame sensor but flame goes out every 5-10sec. and gas valve cliks .Thank you for help Bruno

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Hi, if you have cleaned up the flame sensor, and it continues to go out, you more than likely have a problem in the ignition module itself. The clicking you her is 24volts being supplied to the gas valve because you're auto-pilot stays on long enough for the module to sense the flame and the click is the coil on gas valve being energized.Module shuts MGValve off in a split second to prevent Raw gas from filling up the house.You might try replacing the flame sensor 1st, as it would be a lot less then changing out the module, or main board which ever you have that controls you're system.Just see where the flame sensor plugs into either a module or board, they both do the same if its a hot surface ignitor or pilot flame like you have. I hope this has been of some help to you.Let me know please. Good Luck,
Shastalaker7

Posted on Nov 17, 2009

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Hello,

Hello,
Your have one of two problem causing the gas to not come on on your dryer.
1) the flame sensor is bad...if the igniter comes on and stays on and doesn't go off...usually within 1 minute the flame sensor isn't working as its supposed to
2) the coils on the gas valve could be the problem...if the igniter does indeed go off within 1 minutes and as soon as the igniter goes off if their is no flame the coils on the gas valve is what would need to be replaced
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FLAME SENSORoldtech2332_113.jpg


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No heat, ignitor goes on burner goes on sometimes and after short time goes out. ignitor goes back on, but no burner. what up


If the flame sensor is not returning a good signal, the gas valve is shut off as a safety measure. I surmise that in this situation, the igniter is programmed to fire for a time to flare off any accumulated gas from the initial attempt to fire up the burner.

Check for the following: adequate combustion air supply (make sure inlet vents are clear), proper exhaust venting, flame sensor properly positioned and not cracked or otherwise broken, burner holes are clean and not caked over with combustion deposits (if the flame is uneven and weak right where the flame sensor is located, it will be treated as a failed ignition).

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Because she ain't gettin confirmation of ignition.
Your flame sensor is contaminated most likely.
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themobilian_1910.jpg
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