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jamespappin 10-27-2007 09:15 PM

Pressure Switch Problem?
I know my pressure switch is good, but there is not enough pressure to trip the switch. The hose too it is not blocked, and I pulled the induction motor and there is no wind (checking with match) so I am guessing the heat exchanger is good. My vent is clear, pulled at an elbow to check.

What could cause not enough pressure?

HvacWiz 10-28-2007 02:32 AM

Have you tried checking the port hole on collector box that the hose connects to, these often get plugged up as well.

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