Patent ID: 7403360

Claim:
A central vacuum cleaning system control subsystem for use in a central vacuum cleaning system having a suction motor, the subsystem comprising: a remote control module in the hose handle including a radio frequency wireless transmitter for transmitting command signals and including a radio frequency wireless receiver for wirelessly receiving messages from a central control module radio frequency wireless transmitter and including a user interface for providing to a user messages received by the remote control module radio frequency wireless receiver from the central vacuum source control module, and a central vacuum source control module including a radio frequency wireless receiver for wirelessly receiving command signals from the remote control module radio frequency wireless transmitter and including the central control module radio frequency wireless transmitter for wirelessly transmitting messages, the central control module also for controlling operation of the central vacuum cleaning system suction motor in accordance with the command signals, and including: i) at least one sensor, each sensor for sensing a respective operating condition of the motor, a current sensor of the at least one sensor for sensing motor current of the motor as the respective sensed operating condition for the current sensor; ii) at least one comparator, each comparator for determining when the motor is operating significantly outside the corresponding normal operating condition for the motor for a given period of time; and iii) a performer for, when the comparator determines that the motor is operating significantly outside the normal operating condition for the motor current, wirelessly transmitting messages related to the operating condition of the motor through the central control module radio frequency wireless transmitter to the remote control module radio frequency wireless receiver for provision to the user through the hose handle user interface.