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Message
re: Humidity Level New Construction
Posted on 7/27/22 at 9:45 am to notsince98
Posted on 7/27/22 at 9:45 am to notsince98
quote:
You should not be changing wiring on the blower motor. The blower speeds are adjusted by dipswitches located on the furnace control board.
I have a PSC blower which does not have the dip switches. ECM blowers usually have them I believe.
2
Posted on 7/27/22 at 10:35 am to Snow
quote:
I have a PSC blower which does not have the dip switches. ECM blowers usually have them I believe.
It depends on the control board used in the air handler, some PSC blower motors might be connected to control boards that have dip switches to adjust blower fan speed without having to move blower motor wires. But mine (PSC blower motor), like yours, requires physically disconnecting and reattaching the appropriate colored blower motor wire to a spade connector on the control board to adjust fan speed to an appropriate CFM output.
Good video explaining this LINK - this HVAC tech (New Jersey) has a great HVAC YouTube channel.
This post was edited on 7/27/22 at 11:12 am
Posted on 7/27/22 at 10:39 am to Snow
quote:
I have a PSC blower which does not have the dip switches. ECM blowers usually have them I believe.
Interesting. My only first hand experience with PSC blower is on my parents Carrier furnace and it has dip switches for speed settings.
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