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Anonymous
Anonymous Posted on Jul 22, 2011
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Installed a new Filtrete thermostat on a new Carrier high-efficiency furnace. I followed instructions exactly. It doesn't work. What did I do wrong? Furnace was installed in December. Broom handle cracked faceplate of Carrier thermostat and rendered it inoperable. Installed new thermostat according to instructions. Connected white wire (labeled V+ on the old Carrier thermostat) to the W terminal on the new Filtrete thermostat. Connected red wire (labeled Vg on the old Carrier thermostat) to the RH terminal on the new Filtrete thermostat. The Filtrete thermostat has a jumper between the RH and RC terminals. The new thermostat display and programming are operational but it doesn't seem to be talking to the HVAC, No AC, no fan, no heat.

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  • Anonymous Jul 22, 2011

    I think the model number of the Filtrete therm is 3M-30. The old Carrier therm is A07049. I think the Ac is 2 speed, but I'm not sure.

  • Anonymous Jul 27, 2011

    I discovered on my own that the Filtrete thermostat is not compatible with the Carrier control module on the furnace. I have just ordered another Carrier thermostat.

    The information from the experts was not helpful. They only sent .pdf files of the documentation I already had.

  • Anonymous Jul 27, 2011

    I discovered on my own that the Filtrete thermostat is not compatible with the Carrier control module on the furnace. I have just ordered another Carrier thermostat. The .pdf files sent were of documentation I already had.

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raj somaiya

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  • Posted on Jul 27, 2011
raj somaiya
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Thanks for the update, regarding the thermostat.Hope replacing the thermostat resolves the problem.Keep updated.Thanks.Helpmech.

Marlowe Amoguis

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  • Posted on Jul 23, 2011
Marlowe Amoguis
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Hi.Does the new thermostat has the same rating with the old one?

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Anonymous

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  • Posted on Jul 22, 2011
Anonymous
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Hi smargyle,

Welcome to fixya!

I can provide you with diagrams for the old Carrier therm and for the new Filtrete therm. But, I would need to know what the model numbers are for each therm plus how many speeds AC you have.

Please reply back with that information and we will get your AC back in working order.

Thanks,

Handie Andie

  • Anonymous Jul 23, 2011

    Here is the pdf document for the Filtrete thermostat. The wiring diagrams start on page 7: http://www.google.com/url?sa=t&sourc...

    This web address is for the Carrier therm: www.favret.com/pdf_files/thermostats/tp_prh_3si_install.pdf

    Page 15 has the wire coding for the Carrier.

    You should be able to check for correct wiring with these 2 documents.

    If you still have a problem getting the AC to work once you check the wiring, please reply back and we will look further into it.

    Hope this helps. If it does, I'd appreciate your vote. Thanks,

    Andie

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