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Hello, my name is ***** ***** I look forward to helping you! What model number are we working on?
And the 3 amp fuse blows in the indoor unit?
If you replace the fuse and check voltage while someone else turns it on I'd like to know what voltage you are getting out of the fuse terminals.
28 volts is close enough to the 24 it should be. What started this problem? Did you replace the thermostat?
Think this is over my head I'm going to opt out so someone else can answer. Do not reply until another expert contacts you, if you do it will make it so your question is not visible.
Hi I'm Brian and I'm here to help!
I've read through the entire conversation and am ready to pick this up with you if you wish. If the new thermostat is in the Off position or mode and the thermostat fan switch is in the Auto position or mode, does the fuse still blow when you apply power to the furnace? If so, at what point and what thermostat setting does the fuse blow?