furnace blowing 24v transformers


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Old 12-20-11, 09:57 AM
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furnace blowing 24v transformers

i am working on an oil furnace and it keeps blowing the oil primarys 24v transformer i unhooked the thermo. wiring from the outdoor unit thinking it may be the contactor but it still didnt help i also unhooked the thermostat at the furnace control board and still trying to burn out the transformer and this is a new oil primary and i know its hooked up right it did the same with the old one and burht it out. what can i do ?
 
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Old 12-20-11, 01:29 PM
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Might want to put an inline fuse (or breaker) in there when troubleshooting - they're cheaper than transformers.
 
 

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