Safety features in the fireplace inserts.

In the unlikely event that a malfunction occurs or your home's electrical circuit is overloaded the fireplace insert contains two safeguards to prevent an electrical fire. First, there is a thermostat limiter which will automatically shut off when the temperature inside the insert case reaches 221 degrees Fahrenheit. The second level is a fuse. Essentially, this will burn out when the fuse wire reaches 363 degrees Fahrenheit; at this point the fireplace insert is toast and would need to be replaced.