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a blocked suction line
this is a fixed 2-ton TXV
Common Questions: What causes a "Pressure Switch Open" error on Nordyne units
the AT-520-40 is designed to withstand the rigors of high-traffic commercial environments while maintaining a secure interface with the internal adjustment post
Field Controls 46487501 Vent Damper Refrigerant a blocked suction lineThe Field Controls 46487501 is a 10 inch GVD series gas vent damper designed for high efficiency 24Vac atmospheric gas heating systems. As a direct replacement for the Q35RN 1, this power vent damper prevents standby heat loss by closing the flue pipe when the burner is off, significantly improving overall AFUE ratings. This specific Model GVD 10PL is supplied without a wiring harness, making it an ideal choice for service technicians replacing an