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Very high CO levels at exhaust. Looks like burners leaking gas...
Had a home energy audit conducted and the inspector wasn't able to get a CO reading on the exhaust because the level maxed out his meter. I've read that this is typically a sign of a heat exchanger failure but when observing the unit under operation, the flames do not dance around when when the blower turns on. However, it looks like there is an auxiliary flame occurring between the burner tubes. Could this attribute to the high CO levels in the exhaust? Here is a video of the burners running just before the blower and then while blower is running.
The unit is a Carrier Weathermaker SX Model: 58SX080-BC-1 and installed in 1985. Last year had the three-wire pilot replaced and the tech made a comment that this has several "upgrades" and isn't all original. Not sure what that means but, ok.