Trane VAL19947 TXV 321894-706 and H-32 circulators commonly used

and H-32 circulators commonly used in hydronic heating systems

or if it flashes codes indicating an internal failure

The unit contains two SPDT auxiliary switches that are adjustable

It features an adjustable high limit (100-220°F) and low limit (110-200°F)

this genuine OEM Nordyne circuit board restores factory-spec airflow and protects the PSC or variable-speed motor from irregular signal interference

Trane VAL19947 TXV 321894-706 and H-32 circulators commonly usedThe Trane VAL19947 is a precision engineered R410A 3 Ton TXV designed for high performance refrigerant metering in residential and light commercial evaporator coils. This thermostatic expansion valve maintains optimal superheat control, ensuring the evaporator is properly fed under fluctuating load conditions to prevent compressor floodback and maximize system efficiency. Built for high pressure R410A refrigerant systems, it features a 3 8" ODF inlet