the E3H2 is the direct replacement part for the 1309A0039

installing an STT18A-601R repair kit is the standard professional solution for restoring internal sealing performance

Lockouts typically occur if the system fails to sense a flame within the 90-second TFI period

Whether you are servicing a legacy MK-6600 or a modern MK-8800 series unit

Nordyne 664090R Orifice 322056-301 the E3H2 is the directThe Nordyne 664090R Orifice is a precision engineered . 090 restrictor orifice designed specifically for HVAC refrigerant metering in Nordyne, Intertherm, and Miller systems. This #90 fixed orifice expansion device ensures accurate mass flow of refrigerant into the evaporator coil, maintaining the required pressure drop for optimal thermal exchange. For contractors performing a mobile home furnace repair or AC system match up, using the correct