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Furnace help please!
Woke up this morning to a 55degree house and dropping. Furnace is a carrier showing fault code 34. I've reset everything a few times. Blower is running but I'm not getting ignition. Any thoughts before I call a tech?
glow or spark? Does it try to fire and stop?
First thing is to check the filter and make sure everything is clean. You might have a bad ignitor. Found this online:
34 .IGNITION PROVING FAILURE - Control will try three more times before a lockout #14
occurs. If flame signal lost after trial for ignition period, blower will come on for 90 second
recycle delay.
- Oxide buildup on flame sensor (clean with fine sandpaper).
- Proper flame sense microamps (.5 microamps D.C. minimum).
- Gas valve turned off. - Manual shut-off valve.
- Green wire MUST be connected to furnace sheet metal.
- Inadequate flame carryover or rough ignition.
- Low inlet gas pressure
Most often this is caused from a shorted ignitor. Sometimes you get carbon build up on the flame sensor and it needs to be cleaned. I would check the ignitor. If there is a small white crack in the center of it then it needs to be replaced. If you have an ohm meter, the proper resistance for the ignitor is between 50 and 100 ohms. If there is no reading from your meter then the ignitor is open (bad). Make sure your equipment ground is clean and making good contact to the unit chasis. To clean the sensor use your fingers and rub the sensor until the black stuff comes off. DO NOT use sand paper to clean. The sensor has a coating over it that will be taken off by abrasive material. Hope this helps.
Just got off the phone with him. Ignition module.
Ace Hdw at Buckley Square
17190 E Iliff Ave, Aurora, CO
(303) 745-7177
Cool. Thanks for the help guys, didn't want to start running around looking for a part without talking to someone that knew more about this than me. Love this forum. Wulf202 I owe you one man!
All fixed up. Thanks guys
Nice folks on this site. Glad you got it fixed.
+1Originally Posted by mountainjenny
I have extra rheem igniters if someone searches this thread in the future.
Glad you got it fixed
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