Engineered specifically for Wayne FH oil burners and compatible with firing rates from 4 to 13 GPH

it is not recommended for direct steam contact

preventing damage to the compressor and condenser coil

When diagnosing a failed flow switch in hydronic heating or process cooling loops

this red spring allows for a stable and accurate setting between 10" and 22" w

York S1-331-01975-102 Control Board Els PW 17895 Engineered specifically for Wayne FHThe York S1 331 01975 102 is a high performance demand defrost control board kit engineered to restore and optimize heat pump efficiency in residential and light commercial systems. This genuine York OEM replacement manages the refrigeration cycle by monitoring ambient and liquid line temperatures, initiating a defrost sequence only when ice accumulation is detected on the outdoor coil. By eliminating unnecessary timed cycles, this board reduces