The Nordyne 661040R Orifice is a precision-engineered #40 LP gas burner orifice with a

verify continuity with a multimeter to determine if the switch has failed

How do I know if the thermocouple is bad

this switch ensures that the system fails safe long before internal components reach critical thermal instability

making it a versatile HMI-1TT4 sight glass for various field applications

Amana-Goodman 0130M00104 Defrost Thermostat The Nordyne 661040R Orifice isThe Amana Goodman 0130M00104 Defrost Thermostat is a critical thermal limit component designed for heat pump and refrigeration systems to manage the defrost termination cycle. This OEM replacement part monitors evaporator coil temperatures, cycling the defrost heater off once the frost has dissipated to prevent cabinet overheating. Engineered for precise HVAC temperature control, the 0130M00104 ensures the system returns to cooling mode efficiently,