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Technicians should use a high-voltage probe or check for a consistent 1/2-inch blue arc between the terminals
picking up electrical noise that causes erratic fan behavior or electronic speed control fluctuations
or R-22 refrigerants where a pressure limiting MOP (Maximum Operating Pressure) is required to prevent compressor overload during high-load pull-down cycles
It fits many popular Aaon series
Johnson Controls A350AA-3 Temperature Control 30067439-890 Technicians should use a high-voltageThe Johnson Controls A350AA 3 is a specialized on off electronic temperature control designed for modular integration within the System 350 platform. Operating on 24Vac, this unit features a broad setpoint range of 30 to 130F, making it a versatile choice for both heating and cooling applications in commercial refrigeration. The inclusion of an A99BC 25 silicon sensor ensures high accuracy thermal sensing with excellent linear response across the