I have a Carrier ac/furnace and the 3amp fuse keeps blowing. I had a tech out two days ago replaced thermostat and the fuse and it worked for 36 hours. The fuse I think has blown again. I found a chafed wire behind the new thermostat and trimmed it. However, I do not know the location of the 3amp fuse to replace it again. I have the cover panel off and do not see the fuse. If you can help with the location I cannot thank you enough as my home is now at 90 deg. Thanks

Usually on the furnace board. Looks like an automotive fuse.