Question about Carrier 38BRC048 Air Conditioner

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No air conditioning unit inop

No lights in any mode of thermostat, emergency, heat, auto, on; nothing, fuse looks good, circuit breaker good, switches intact at fan unit and furnace. Drain pipe cleared with bleach water, filter clear.

Posted by kyle0422 on

  • Anonymous Oct 31, 2008

    carrier split unit the thermostat want light up

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Gary Davd

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You lost your 24v check the transformer at the furnace at R and C treminals see if you have 24v if not your transformer is gone but you also have to have the door switch on the blower section closed and check incoming power as well

Posted on Aug 18, 2008

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1 Answer

My AC unit has went to emergency heat mode on my thermostat, and I can not get it off. We have not had the heat on at all.


Try to find the circuit breaker or the fuse box and find the circuit breaker or fuse that controls the AC and flip it off, until you are able to get this repaired.
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switch the fan to 'ON' at the thermostat... this is the midpoint of the system electrically. If the fan comes on check for voltage at the condensor unit. a check to see if the thermostat is the problem... remove the thermostat and connect the red, green and either the white or yellow wires (not both) if you chose white you should have heat...yellow AC...

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1 Answer

My honeywell thermostat display is blank. I have changed the batteries, checked the circuit breaker with no luck. if you switch it from auto to off, the fan will go on but there still is no heat. Any...


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if I helped you, please rate my answer.

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1 Answer

What part do we replace first?


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