Aquacal HP11 Microprocessor Board, Part # ECS0501
The AquaCal HP11 Microprocessor Board (ECS0501) is a replacement control board designed for AquaCal pool and spa heat pumps equipped with the HP11 control system. This microprocessor board serves as the central control component of the heat pump, processing temperature sensor readings, monitoring system operation, and managing essential heating and cooling functions. It communicates with the HP11 control display and other system components to help maintain reliable heat pump performance.
- Designed for HP11 control systems
- Monitors temperature sensors and operating conditions
- Controls essential heat pump functions
- Supports communication with compatible external controls
- Replacement for damaged or malfunctioning HP11 microprocessor boards
Compatibility: Designed for AquaCal heat pumps using the HP11 control system. Verify compatibility using your heat pump's model and serial number before ordering.











































