Heater management

A heater assembly comprising:

• an electric heater including at least one heating element;
• and
• electric circuitry electrically connected to the electric heater, the electric circuitry including a memory, the electric circuitry configured to
• measure an initial electrical resistance of the electric heater in a removable cartridge configured to hold an aerosol-forming substrate,
• measure a subsequent electrical resistance of the electric heater after measuring the initial electrical resistance,
• determine a difference between the initial electrical resistance and the subsequent electrical resistance,
• determine a presence of an adverse condition based on the difference and a threshold value stored in the memory, and
• perform at least one of controlling a power to the electric heater or providing an indication if the adverse condition is present.

An electrically operated aerosol-generating device for an electrically operated aerosol-generating system, comprising:

• a power supply;
• and
• electric circuitry electrically connected to the power supply and comprising a memory, the electric circuitry configured to
• electrically connect to an electric heater in a removable cartridge configured to hold an aerosol-forming substrate,
• measure an initial electrical resistance of the electric heater,
• measure a subsequent electrical resistance of the electric heater after measuring the initial electrical resistance,
• determine a difference between the initial electrical resistance and the subsequent electrical resistance,
• determine a presence of an adverse condition based on the difference and a threshold value stored in the memory, and
• perform at least one of controlling a power to the electric heater or providing an indication if the adverse condition is present.

Electric circuitry configured to electrically connect to an electric heater in a removable cartridge configured to hold an aerosol-forming substrate and to a power supply of an electrically operated aerosol-generating system in a device with the electric circuitry, the electric circuitry comprising:

• a memory;
• and
• a microprocessor configured to
• measure an initial electrical resistance of the electric heater in the removable cartridge,
• measure a subsequent electrical resistance of the electric heater after measuring the initial electrical resistance,
• determine a difference between the initial electrical resistance and the subsequent electrical resistance,
• determine a presence of an adverse condition based on the difference and a threshold value stored in the memory, and
• perform at least one of controlling a power to the electric heater or providing an indication if the adverse condition is present.

A method of controlling an electrically operated aerosol-generating system that includes an electric heater in a removable cartridge configured to hold an aerosol-forming substrate and a power supply in a device, the method comprising:

• supplying a power to the electric heater in the removable cartridge from the power supply, the electric heater including at least one heating element configured to heat the aerosol-forming substrate;
• measuring an initial electrical resistance of the electric heater;
• measuring a subsequent electrical resistance of the electric heater after the measuring of the initial electrical resistance;
• determining a difference between the initial electrical resistance and the subsequent electrical resistance;
• determining a presence of an adverse condition based on the difference and a threshold value;
• and
• performing at least one of controlling the power to the electric heater or providing an indication if the adverse condition is present.