Abstract: A water heater includes at least one heating system for heating water. Control circuitry is configured to determine electrical parameters of individual components of the at least one heating system. The electrical parameters are utilized to determine operating conditions of the water heater. The operating conditions can be utilized to control at least some aspect of the water heater.

Abstract: A water heater system includes a tank storing warmed water, a supply conduit providing supply water, and control circuitry configured to determine a setpoint temperature, receive an input indicative of a sensed temperature of a mixture of the warmed water and the supply water, apply an inverse transfer function to the input to determine a conditioned temperature, assign a control temperature as one of the sensed temperature and the conditioned temperature, compare the setpoint temperature to the control temperature, and generate an output to adjust the mixture based on the selection.

Abstract: A water heater includes at least one heating system for heating water. Control circuitry is configured to determine electrical parameters of individual components of the at least one heating system. The electrical parameters are utilized to determine operating conditions of the water heater. The operating conditions can be utilized to control at least some aspect of the water heater.

Abstract: A water heater includes at least one heating system for heating water. Control circuitry is configured to determine electrical parameters of individual components of the at least one heating system. The electrical parameters are utilized to determine operating conditions of the water heater. The operating conditions can be utilized to control at least some aspect of the water heater.

Abstract: A water heater system includes a tank storing water and a heat pump configured to heat the water. The heat pump includes a compressor that compresses a refrigerant of the heat pump, a condenser downstream of the compressor, and an expansion device downstream of the condenser that controls a pressure of the refrigerant. Sensors communicate indications of temperature. Control circuitry is configured to determine at least one operating temperature of the heat pump, determine a position command based on the at least one operating temperature, communicate the position command to the expansion device to move the expansion device, determine SST based on a first indication, determine a saturated condensing temperature SCT based on a second indication, determine a position estimate of the expansion device based on the SST and the SCT, compare the position command to the position estimate, and determine a condition based on the comparison.

Abstract: A water heater includes at least one heating system for heating water. Control circuitry is configured to determine electrical parameters of individual components of the at least one heating system. The electrical parameters are utilized to determine operating conditions of the water heater. The operating conditions can be utilized to control at least some aspect of the water heater.

Abstract: A water heater system includes a tank storing water, a first sensor operably coupled with an upper portion of the tank and that communicates a first signal, a second sensor operably coupled with a lower portion of the tank and that communicates a second signal, and control circuitry configured to determine a first temperature of water in the upper portion based on the first signal, determine a second temperature of water in the lower portion based on the second signal, determine functional weights for the first temperature and the second temperature based on a difference between a target temperature for the water and the second temperature, calculate a weighted average of the first temperature and the second temperature based on the functional weights, determine a representative temperature of the water based on the weighted average, and communicate an output in response to the representative temperature.

Abstract: A coil cleaner for a condenser coil of a refrigeration system includes a sweeper assembly. The sweeper assembly has a pair of parallel brushes. Two motors, one located on either side of the sweeper assembly, are coupled to a first and second screw. The sweeper assembly is connected to the first and second screw by way of two nuts. The nuts travel on their respective screws when the screws are rotated, thus moving the sweeper assembly across the condenser coil. A controller manages the operation of the sweeper assembly. When the sweeper assembly has moved a predetermined distance, the sweeper assembly contacts a pair of sensors independently controlling each of the two motors. After contact with the sensors, the motors are reversed, and the sweeper assembly moves in the opposite direction. When the sweeper assembly contacts a second pair of sensors, both motors are turned off.