Nordyne 917178A Control Board Els PW 17895 Utilizing a 24-volt AC coil

Utilizing a 24-volt AC coil

it allows for easy brazing without requiring valve disassembly

With a 5/8" sweat ODF connection and a maximum operating pressure of 680 PSI

With a 1/2" NPT connection and a 5 PSI max inlet pressure rating (Maxitrol tested)

This specific model is designed for White Rodgers ACM series enclosures

Nordyne 917178A Control Board Els PW 17895 Utilizing a 24-volt AC coilThe Nordyne 917178A Defrost Control Board is the official OEM replacement module designed to restore the automated defrost logic in residential split system heat pumps. This unit is a direct fit successor to the obsolete Nordyne 621579 and various older 1084 series boards, ensuring a seamless interface with existing 24V control circuits and sensor leads. As a veteran grade heat pump defrost control, it utilizes precise temperature monitoring at the