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no preheat of furnace 01/07/02

Posted by SCOTT on January 10th, 2002 10:30 PM
In reply to Heat-Cool Thermostat by Scott on January 7th, 2002 09:17 PM [Go to top of thread]

yes the preheat& cooldown were working fine.old thermostat was'nt reliable.found out the jumper wire from RH to RC was,nt hooked up right.Also there is a "thermostat" on the furnace that controls the preheat-cooldown function which is run through the RH-RC conection.Working great now. Thanks for your attention.

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