How to change blower speed on a lennox elite furnace

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Change blower speed [ 4 Answers ]

We recently added a second furance on the first floor. The originel stayed upstairs and just capped off ductword to downstairs but had to reduce blower speed because it was blowing so hard. Now the new down stairs furnace (h9mpvo75f12a) does't blow hard enough. How should the dip switches be to...

Lennox Furnace fan only runs on slow speed in heating mode [ 4 Answers ]

I hope someone out there can help me under the control logic and components on my 1994 Lennox G20RE gas furnace. My fan runs at normal speed when it runs alone. When the furnace is in the "heat" mode, the fan only runs at minimum speed. It then overheats and begins to smell like it's burning up....

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Have lennox G20 Q4 furnace. Burners work when called for but no blower. Blower will not run when selected at thermostat. Had a new circuit board for the G20 Q3 furnace, installed it. Result was blower ran prior to burners igniting and blower would not go off after burner shut down. Changed...

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Excuse my lack of mechanical knowledge and I hope I can explain the problem in an understandable way. The blower on the electric furnace has gotten out of alignment(?) and is rubbing the housing(?). I can put it in the correct position so it does not rub by physically holding the shaft but cannot...

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