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Intermittent Igniter Issues (natural gas, Armstrong Air Ultra V)
Posted On: March 26, 2023
Here's the sitch.
I've replaced my igniter 3-4 times in the last year. Figured I'd just gotten cheap ones. Maybe I got oil on it, maybe chemicals/moisture from nearby washing machine/shower (there's talk of this online, idk). Anyway, I bought a beefier one and installed it carefully. It seems like it's failing again (4 weeks later), and I'm starting to suspect it's not the igniter. I'm wondering if it's a faulty board or something. The unit is quite old. I've had it at least 10 years in this house.
Here's what's happening right now. The unit will randomly decide not to ignite. The element just doesn't glow when this happens. I can shut the power to the furnace off for about 30 seconds and then switch it back on. This can solve the issue for the day—or sometimes just one cycle. Then I have to turn it off/on again in order to get it to light.
Air filter is good. Pressure sensor seems fine, since the unit triesto ignite the gas 2-3 times before deciding something isn't working right.
I've looked around online a lot and can't seem to find anything about this specific issue.
Any help would be greatly appreciated.
Thanks!.
Question from user SamboBaggins91 at hvacadvice at reddit.com.
Answer:
Maybe a bad board. Look for cracks on the solder points.
Answer from user DwightBeetShrute at hvacadvice at reddit.com.
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