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The planes been dropped off at maintenance and I'm waiting to hear back if they have found anything with the exhaust. A source of CO has been found as the plastic evaporator housing has cracked and opened up around where the dryer mounts to it. Rest of the ac/blower system was tight and well sealed. Explains why CO would show up only when the blower/ac was in use.


CO monitor was an excellent investment as you never would have known if it hadn't gone off.


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