Thermostat Concern

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hi! robert & greg. its me again. got my refund check finally. the old thermostat we were talking about in my old post that went bad. its the style that only has a one sw. on it. a heat, cool, & off option selection. the other sw. that is inside the intertherm unit is the on, off, & auto selection.

In the shematic i see there is a way to bypass the inside sw. so i can wire the new one in. its called a jumper wire. thats where i get confused. i'm going to buy a new one, preferably a nonprogramable digital type. don't know which one to buy. the old thermostat has 5 wires going into it. 2 wires for the heat & 3 wires for the a/c. remember i sent some pics of the thermostat schematic from a website. its a single stage type. to me its a little complicated but was hoping you could help me wire in my new one when i get the right one. thats where you come in to play. you should still have my model # somewhere in my earlier post under intertherm correct wiring needed post. the post was back on Nov.12th 2006. thanks for any help you can give me.

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Are you talking about a jumper wire inside the new t-stat or at the furnace ?

The t-stat you need will depend on current wiring and which a/c control box you have.

You should really get a Tech to do this for you. IF you miswire or cross up the wires, you'll blow your low voltage circuit and have a costly repair to correct it.

Your new t-stat will have to match up with current wiring configuration or you will have to rewire to get what you want.

If Digital, get a battery operated one.

Take care and best wishes,
Robert

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thanks robert!

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Hi,

You're very welcome. It isn't real hard, but then I've been doing it over 27 years.

I've seen many people miswire or cross-wire and end up with a repair more costly than a service call from start would have been.

Knowing exactly what is there now is the key to getting correct t-stat and the determining factor in how to wire it.

Take care and best wishes,
Robert