What probe rods are compatible with the 3E3A

while the built-in test switch confirms proper operation without needing to drain the system

Advanced Troubleshooting: On-board diagnostic LED simplifies field service by identifying specific fault codes like pressure switch failure or flame loss

making it suitable for standard North American grids and various international applications

Safety Integration: Effectively monitors for draft inducer failure or flue obstructions to prevent improper combustion

Lennox 21602 Blower Wheel 321894-708 What probe rods are compatible15"x11" BlwrWheel 1 3 16"Bore This item is not qualify for free shipping.