Question about Weather King 12AJA4801AH Air Conditioner

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Transformer weather king firnace keep blowing transformer

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What you need to do is isolate the loads that are on the transformer and put a amp meter on the transformer and read the amps while you put the loads on one at a time. the one that spikes is the one thats bad. You can put a inline fuse in to protect the transformer. A 3 AMP fusw qould be good for a 75 va transformer if its a 50 va you would need a 2 ampo fuse.

Posted on Jan 13, 2009

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1 Answer

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Does it call for a 24v transformer? How many amps does it need. If you have the wrong amps. that can cause issues.

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1 Answer

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Hi,
There is either no power to the air handler or the transformer has burned out...

The power to the t-stat comes from there....if your lucky the transformer is fused and the fuse has blown...if you replace it and it blows again then check for a short in the low voltage...

Hereis a tip about troubleshooting your air conditioner...
There are many things that can cause your air conditioner not to cool...

Air Conditioner Trouble - Review the Possibilities

heatman101

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1 Answer

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Does your outside unit run. Does the inside unt try to run. If not you may have control problem. Check voltage on transformer. It should be 24 volts. Rus

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1 Answer

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t-stat r and rc togather to furnace r
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on the furnace y their should be one cable with 2 small wires 1 goes to y the other goes to the neutral of the transformer terminal C turn the power off so ya don't short the transformer if its not all ready bad. Good Luck Tom

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2 Answers

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