Utica-Dunkirk 550001655 Control board 319848-301 The ABB ACS320-03U-08A8-4+ is a

The ABB ACS320-03U-08A8-4+ is a high-performance Variable Frequency Drive specifically engineered for variable torque applications

Broad Compatibility: Serves as the factory-authorized update for the 9006279005 and fits Cyclone BTH 199 and BTH 250 series

it is engineered specifically for Rheem-Ruud specifications

this switch automatically opens at 140°F to prevent heat exchanger damage and resets once the temperature drops back to 100°F

Field Serviceable: The take-apart STAS489T shell allows for quick replacement of desiccant cores without cutting the line

Utica-Dunkirk 550001655 Control board 319848-301 The ABB ACS320-03U-08A8-4+ is aThe Utica Dunkirk 550001655 Control Board is a critical 24V ignition control specifically engineered for high performance gas fired boiler systems. As a veteran grade OEM replacement part, this module manages the direct spark ignition (DSI) sequence, ensuring precise timing for prepurge, flame sensing, and gas valve actuation. It features a 5 minute retry logic to enhance system reliability during transient ignition failures, preventing nuisance