Question about Heating & Cooling
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Posted on Jan 02, 2017
have you changed t-stat? if so you need to increase the heat anticipator. if you have a fan limit switch, the setting may need adjusting. Thay will change with age
Posted on Nov 01, 2009
Here's my best shot.
Check the temperature settings for the fan switch.
The low OFF setting should be about 100 degrees.
The ON setting should be around 150 degrees and this is the setting that "makes" the ON contacts.
The HIGH LIMIT setting should be about 180 degrees.
If these are set, can you use a meter to see if the FAN ON contacts are closed?
Lastly, it appears that one hot line should go to one side of the blower and the other hot line should go to the bottom FAN terminal with the other side of the blower being fed by wiring from the top FAN terminal.
Good Luck. Gary
Posted on Feb 22, 2011
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