8531 Limit Switch Wiring ?
Am in the middle of a battle trying to swap out the limit switch from my spare 8531-lll I got from a guy, and the OEM 8531-ll in my Class C. I managed to get at the switch in the lll, but no luck y...
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BFL13 wrote:
I got it so it did better with the lll's limit switch and did some work on a duct that was S turned to make it a shorter straight run, and added an extra return air vent, but it still did "it".
Today I got the board from the friend's totalled 1998 MH, which is another lll, and the furnace ran up perfectly with no hiccups.
I was going to try the lll's plastic and so lighter weight squirrel cage instead of the metal ll's in case it was fan speed as was mentioned. I thought the lighter weight one would spin faster, don't know. It all works fine now, so I won't swap those.
Thanks again everyone for the good help!
You do NOT want the RPM's to change from OEM spec. The air mixture is dependent on the RPM's of the burner impellor. Doug
