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What does fr mean for carrier air conditioner? The ac just stops and shows fr code

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Freon

Posted on Aug 16, 2010

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Its not 5A but SA means energy saver mode.use remote to change to cool mode without energy saver.

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acerrorcode.com/carrier-split-air-conditioner-error-codes.html
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My 1.5 carrier with remote stops most of the time , indicating fr. Why is it like that .? I have to unplug it again to make it work


http://www.carrier.com.ph/Media/Default/Manuals/icool_manual.pdf

This PDF explains that its a freeze protection safety. Check air filter or freon leak(their words).
So check filter, and also the coil behind the filter may be dirty. Or it may be the fan blade is dirty. Something making the sensor feel a "too cold" temp. And as always it may have a freon leak.

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Are you trying to run your cooling now? I'm guessing you have a carrier thermostat and that's where this is displaying. It's been awhile since I've came across one but to my vague reculiction that code indicates the outdoor sensor detects low ambient them temperatures which in turn will not allow your air conditioner to run which would make sense this time of year. If you want to run cooling in below 60 degrees temps you must add a "low ambient kit" this shuts the fan down outside to build up higher head pressure without doing this you will just ruin your ac but in your case it won't let you. Google up your Tstats model number and codes if that's not your situation.

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I believe this means you need to empty the water catch tray. Normally a pull out tray at the rear with a float arm in it. It will keep happening as the water is condensed out of the air during the dehumidification. Empty it out and start again, it will need regularly emptying.

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Yes, the wires for your thermostat are low voltage 24volts, and there is a fuse that protects it, now if the fuse is gone, nothing will work until you separate the wires and put a new fuse, the fuse is inside the ac unit, if you cant find it, that means it doesnt have one. there for need to check voltage at the transformer.

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