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| Joined: | Sun Sep 27th, 2009 |
| Location: | New Orleans, Louisiana USA |
| Posts: | 137 |
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To change the cooling speed , First turn off power to the furnace. next remove the coverplate hiding the blower and circiut board.
Now look closly at the circuit board. Find a black relay on the board marked "COOL". It will have a Black wire plugged into it. Next locate the two wires pluggged into the connectors marked "SPARE". Those wires will be yellow and orange.
The Black wire on the relay is the high speed of the motor
The Yellow wire is the MEDIUM-High speed of the motor
The orange wire is the MEDIUM-Low speed of the motor
To lower the speed just remove the black wire from the relay, Remove the Yellow wire from the terminal and reverse the two wires.
Your furnace fan will now run at the MEDIUM-HIGH Speed.
Put panels back on and turn power back on.
****If that speed does not help humidity levels enough, You may try The MEDIUM LOW SPEED .
ALWAYS!!!! PUT THE UNUSED MOTOR LEAD ON A "PARK" TEMINAL
!!!Changing the cooling speeds comes with a possible penalty
Some of your rooms may no longer get as cool as you like, If they are far (ductwise) from the furnace.
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Don't know much. But learned early on, once you let the smoke out of a something electrical, you can never put it back in!!
