Resideo L8148J1009 Aquastat Relay Freon Check for the LED fault

Check for the LED fault codes on the board

How do I change the high-side reset from manual to automatic

The Armstrong International D41790

This wheel is designed for Clockwise (CW) rotation as viewed from the hub/motor side

How do I configure the pressure range on the PR-275-R2-MA

Resideo L8148J1009 Aquastat Relay Freon Check for the LED faultThe Resideo L8148J1009 Aquastat Relay is a specialized immersion type hydronic controller designed for contractors managing forced hydronic heating systems. Engineered for high limit protection, this unit integrates a switching relay to provide simultaneous control of both burner and circulator motors. It features a broad high limit operating range of 120 240F with an 8F fixed differential, ensuring precise temperature regulation and thermal safety.