Question about Carrier XHB123D X/Y Series Heat/Cool Air Conditioner

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Run(heat) for a certain minutes then it stop.

Heating/cooling unit- Run for a certain minute then it turn-off

We have a roof heating/cooling unit carrier model no. 48tje006, ser.No. 3499g21132 and it prompts at the panel 4 red light flushing means- "4 consecutive limit switch faults". What does it mean this problem? It is the thermostat problem need to replace?.Please answer and give me an idea howto solve.

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  • Ken Bledsoe May 11, 2010

    I should have given you a explanation of the code you have. Get back with me if you want to know as you haven't answered my question yet you might have found out already. ken

  • Ken Bledsoe May 11, 2010

    Is your filter clean?

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  • 11 Answers

You may have a durty evaporator coil do to a durty filter, the heat is cuting off by the limit control sensor

Posted on Feb 09, 2009

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Posted on Jan 02, 2017

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