Trane thermostat replacement

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Mar 26, 2022
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I replaced a failed tcont 803 thermostat with a simple Honeywell rth111. I also replaced the blown 5 fuse in the 4teh air handler and checked the connection by activating the fan by crossing red and green. After finishing installation the thermostat failed and the new fuse was blown. Appreciate any help
 
Joined
Sep 28, 2023
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Innsbruck
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Austria
It sounds like there might be a short circuit in the system. Double-check the wiring to ensure everything is connected properly. If the issue persists, consider consulting a professional for a thorough diagnosis. Safety first!
 

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