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I replaced my Janitrol 7 wire thermostat with an RTH7500 which now controls my heatpump system. The switches on the Janitrol were cool - off - heat - Em Heat. Does that mean I have auxiliary heat? There is no other heating system besides my heat pump. Should the 0170 function on the new thermostat be set at #2 or #7?

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  • tom1976 Dec 19, 2008

    does "tat" really mean "that"? You should know what function 0170 stands for, it't your product for God's sake. This is extremely slipshod, sloppy work on your part. I am not impressed at all. I wlll delete the explatives.

    Thanks pal

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There should be electric heat strips in the airhandler.

They automatically come on when the unit goes into defrost, the thermostat is turned up more than 7 degrees over the indoor temp or if the outdoor temp is just so cold the HP cannot keep up.

Tat is your auxillary or emergency heat.

What does the new t-stats installers booklet say that the 0170 function and #2 #7 options are for?

If it is for gas vs elec heat then set it on the elec option.

The difference is that in gas heat systems the blower comes on a few min AFTER the furnace fires up to allow the heat exchanger to get hot.
In an electric furnace the blower has to come on emediatly because the heat strips get hot emediatly and if the blower is delayed the system will shut of in high temp overload.

Posted on Dec 18, 2008

  • Danny Clark
    Danny Clark Dec 19, 2008

    No ignorant, its not my "product".



    You are not talking to the manufacturer of the unit here.



    I am a heating and air conditioning technician. I service and repair all brands of units.

    If I carried manuals, diagrams and parts for every unit I service I would need to have a Mac truck 18wheeler following me around.



    Oh my, I forgot an "H", the sky is falling chicken little. I'm sure that one widdle spelling error made the whole post illegible.



    However, it IS YOUR unit. If anyone has the code list it should be you.

    But no, someone is kind enough to "for free" answer your questions, explain how the system works, and ask more questions to clarify, and what do you do?



    You Climb up on a false high horse of ignorant arrogance and hurl insults.

    Then you have the nerve to rate it inappropriate?

    You asked TWO questions. I answered the first. I asked clarification on the second, explained how the system works and then answered the second according to what little information you provided.



    And you call it inappropriate........



    Maybe you should order a dictionary when you order your manual.

    As well as "How to change from arrogant SOB to decent human being in 90 days. By Ima ****"



    By the way, here is your "comment" just for the record.

    Comment posted on Dec 19, 2008
    does "tat" really mean "that"? You should know what function 0170 stands for, it't your product for God's sake. This is extremely slipshod, sloppy work on your part. I am not impressed at all. I wlll delete the explatives.
    Thanks pal

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