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sorry tim, it said you were offline
The service person I had investigate disconnected all of the rubber hoses and inspected them. The only thing he did not do was remove the condensate trap mounted on the side of the furnace. The way it was installed makes it difficult to remove. The installer ran PVC pile to the output of the trap. Is the trap what should be replaced?
okay, will attempt this. Figure 7 on page 9 is the configuration I have.
One more thought, if it is plugged, how does that explain that it does not exhibit this problem all the time?
This did not end up fixing the issue. I left the furnace cover off and noticed the inducer motor housing bulges slightly simultaneously with the gurgling noises. Any further ideas?
I threw in the towel and called a service person to come out. He replaced the inducer motor/housing as he thought the bearing was going bad. He is coming back today because I'm still getting error code 31. I hope we can somehow clean/inspect the vent too the roof first we have to figure out which vent on the roof is from my unit.