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Discussion Starter · #1 ·
I was changing out a thermostat on a heat pump and shut off power. After I put power back on, I needed to switch 2 of the wires and forgot to turn power off. I think I may have messed up the circuit board or something because it won't come back on. What are my options?
 

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Look for a 3-5 amp GM type auto fuse on the circuit board or its vicinity.
 
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