the 626612 is calibrated to open at 165°F and reset once the heat exchanger temperature drops to 135°F

or "metal-on-metal" clattering sounds during the blower cycle

a blocked chimney/vent

the 3L09-2 offers an 1

Does this wire include the electrode connectors

Raypak 005899F Fuse Kit the 626612 is calibrated toThe Raypak 005899F Fuse Kit is a critical safety component designed for flame rollout protection in high efficiency gas heaters. As a 152C thermal cut off, this OEM part is engineered to disrupt the ignition circuit if excessive heat is detected near the burner tray, preventing damage to the internal wiring and cabinet. Designed for broad compatibility, this replacement thermal fuse is a standard requirement for maintaining Raypak digital atmospheric