Question about Carrier 38CKC030 Air Conditioner

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Carrier a/c thermostat was working fine, then display went blank!

Carrier a/c (not sure of exact number) thermostat was running fine, then then went blank all together. now it's just blank & what's worse is its 85 today and going to be 90+ tomorrow...

I took panel off to see if it was (as my landlord thought) battery operated, and it is not... need help. i'm at work w/air conditioning, but my wife & kids are home w/none...

Posted by Anonymous on

  • Anonymous Jun 10, 2010

    yes digital... thanks...



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  • 16 Answers

If it has no batt I would ck transformer for 24to26 volts no voltage replece transformer be sure trans has 115 volts to it trans should be in furnace section

Posted on Jun 11, 2010


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Carrier blank thermostat

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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.


Handie Andie

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Check in the air handler to make sure the cover is on right... then check for power to the air handler, then check ofr a fuse on the circuit board, finally check the transformer...

The problem lies in one of those things...


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