No Power From Furnace To Transformer For HUM - HVAC - DIY Chatroom Home Improvement Forum

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Old 01-15-2012, 02:01 PM   #1
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No power from Furnace to transformer for HUM

I have a Rheem furnace (RGRA control 1028-928 ). There is no power going to the humidifier. I hope someone can help me troubleshoot the power source/transformer. I'd appreciate if you can provide step-by-step instruction for this.
The transformer is class 2 24v 12av. I tried to test it with the multimeter. But i was not sure if I did it right. the voltage reading was 0 on both input and output of the transfomrer. The resistence of the input read .023 and the output read .005.


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Old 01-15-2012, 02:15 PM   #2
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No power from Furnace to transformer for HUM

Find out why you don't have line voltage to the transformer. Is there a door switch? If so, did you close it before you tested the transformer?


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Old 01-15-2012, 02:25 PM   #3
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No power from Furnace to transformer for HUM

remove the both sides of the TR and ring them (pairs out) with the ohm setting on the meter or audible signal ....forget the ohms values... if they say continuity(like leads together) then check the 115Vs in and the 24V out to the Humid
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furnace , humidifier , transformer

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