always check the flame sensor and ignition module as well

on low fire and 3

often found in standard Lennox furnaces

While cleaning with a non-abrasive material can temporarily restore a flame signal

Amana-Goodman BT1753510S Disconnect 318172-701 always check the flame sensorThe Amana Goodman BT1753510S Disconnect is a critical safety component designed for HVAC power shutoff in residential and light commercial cooling systems. This genuine Goodman OEM part provides a reliable electrical break point, ensuring that technicians and homeowners can perform air conditioner maintenance or heat pump repairs without the risk of electrical shock. Engineered to meet strict HVAC safety switch standards, this disconnect box