I have a Carrier 8000 Weathermaker (model # 58WAV091-16) that is displying error code 24. Any idea what this is (24 SECONDARY VOLTAGE FUSE IS OPEN
Check for: - Short circuit in secondary voltage (24V) wiring and how I can fix it?

Try replacing the fuse on the circuit board. If the fuse fails again check all 24 volt wiring circuits for a short.