1. Pilot light won't stay lit: If your gas fireplace's pilot light won't stay lit, it could be due to a faulty thermocouple or a clogged pilot orifice. A professional gas fireplace technician can diagnose and fix the problem.

2. Burner won't ignite: If the burner won't ignite, it could be due to a faulty ignition switch or a dirty burner. A technician can clean the burner or replace the ignition switch as needed.

3. Damaged glass or logs: Over time, the glass or logs in your gas fireplace can become damaged or worn. A technician can replace these components to improve the appearance of your fireplace.

4. Gas leaks: Gas leaks are a serious safety hazard and require immediate attention. If you smell gas around your fireplace or suspect a gas leak, turn off the gas supply and call a professional gas fireplace technician right away.

5. Strange noises: If you hear strange noises coming from your gas fireplace, such as popping or hissing sounds, it could be due to a clogged burner or faulty gas valve. A technician can diagnose and fix the problem.