Secondary Voltage Fuse Open Furnace Fix 24 Bad Thermostat Replacing The Thermostat Fixed It April 28, 2023secondaryfixed, furnace, fuse, open, replacing, secondary, thermostat, voltageadmin Share ← HK42FZ007 Gas Furnace control board 1012-940 carrier bryant payne hvac units OEM Carrier Bryant Furnace Control Circuit Board 695-83-4B 695-41 HH84AA017 →