Heat pump motor optimization and sensor fault detection

Details Heat pump motor optimization and sensor fault detection Heat pump motor optimization and sensor fault detection

1995-06-01

1997-05-20

Tanner, Harry B.

Refrigeration

Automatic control

Refrigeration producer

F25B 4104

Patent

active

056303254

ABSTRACT:
The microprocessor-based HVAC control system detects sensor faults by comparing thermistor readings with predetermined extreme values, indicative of sensor fault. The system automatically selects the appropriate combination of automatic/preset modes of operating key system components such as the expansion valve, the demand defrost system and the indoor fan speed control system. With a view towards minimizing any negative impact on system performance and reliability in the event of sensor malfunction.

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