Question about Intertherm Heating & Cooling
Typically if you have a yellow wire in the "y" terminal blue is used as common or "c". As far as your jumper from rc to rh, that will depend upon what type of heat you have. If all of your heat and cooling come from your packaged unit outside, yes you will need the jumper. If this does not work maybe you have a bad breaker or transfomer.
Posted on Oct 14, 2007
Posted on Dec 13, 2007
SOURCE: Is there an easy way
I have never heard of a variable speed Intertherm. If it has multiple wires it is likely just an adjustable fan where you can use a different lead for a different speed. Usually black is high blue is med. hi, red is low, ect. Check your wiring diagram on the furnace door. Why do you want to change the speed?
Posted on Nov 24, 2008
How old is the intertherm. The old ones have fan limit switch and sometimes they stick. The new ones have a fan baord or time delay relay. They go bad from moisture and they just go bad sometimes. It sounds like you just have a shorted relay. If you think you can replace it you can get a relay at any parts store. Need the model number of unit. If not just call a service tech for free estimate. Russ
Posted on Jul 24, 2009
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