York S1-031-09182-000 Control Board 320735-701 Replace this unit if you

Replace this unit if you observe heavy frost accumulation on the evaporator coils despite the heater being functional

Precision-fit water gauge gaskets provide a leak-proof interface

Using it on other brands may over-amp the motor if the pitch is too aggressive

Failures typically stems from improper primary air adjustment

Common Questions Is this transmitter direct or reverse acting

York S1-031-09182-000 Control Board 320735-701 Replace this unit if youWhen you're troubleshooting VAV systems or handling complex economizer setups on the job site, the York S1 031 09182 000 Control Board is the standard OEM solution for expanding communication protocols. This expansion module, often categorized as a VAV Econ expansion board, HVAC control board replacement, and York replacement part, is engineered specifically for HVAC system communication modules and VAV control board expansion. It provides the