Frequent tripping of the 1320363 limit switch usually indicates airflow issues

and 3003 series wall furnaces

professional repair that matches original equipment specifications

The MARS 12921 features standard oval dimensions (approximately 2

The compact

Nordyne 626343R Rollout Switch Frequent tripping of the 1320363The Nordyne 626343R Rollout Switch is a critical safety component designed for furnace flame rollout protection. This factory authorized OEM replacement part is rated at 300F and utilizes a Manual Reset SPST (Single Pole Single Throw) configuration. When combustion irregularities occur, such as a cracked heat exchanger or flue blockage, the switch detects excessive heat near the burner assembly and opens the circuit to shut down the heating cycle.