Grant Pcb Board Hpaw65/85/110/130 Hpas18M

This will replace the Green Board. If you have Yellow Board contact Grant Technical

Grant PCB Board – HPAS18M

Genuine Replacement Control PCB for Grant Aerona³ Heat Pump Models: HPWA65, HPWA85, HPWA110 & HPWA130

The Grant HPAS18M PCB Board is a genuine replacement printed circuit board (PCB) designed for use in a range of Grant Aerona³ air source heat pumps. As the central control unit for your heat pump system, this PCB manages all operational functions, including compressor control, temperature regulation, safety protocols, and communication with sensors and user interfaces.

If your heat pump is experiencing error codes, irregular operation, or complete failure to start, a faulty control board may be the cause. Replacing it with the HPAS18M PCB restores safe, reliable system control in line with Grant’s high-performance standards.

 Key Features & Benefits

• Genuine Grant Part – HPAS18M
  Manufactured to original specifications for full compatibility with Aerona³ heat pump models.

• Central Control for ASHP Operation
  Manages compressor start-up, defrost cycles, temperature sensing, and system protection.

• Supports Efficient, Low-Carbon Heating
  Ensures optimal operation of R32 refrigerant-based Grant Aerona³ units, improving energy efficiency.

• Pre-Programmed for Quick Setup
  Supplied ready for installation—reduces downtime and simplifies commissioning.

• Essential for Fault Resolution
  Ideal replacement when error diagnostics point to control board failure.

• Compact & Durable Design
  Built to withstand continuous outdoor heat pump conditions, including temperature swings and humidity.

Compatible Grant Heat Pump Models

The HPAS18M PCB Board is compatible with the following Grant Aerona³ R32 air source heat pumps:

• HPWA65 (6kW model)

• HPWA85 (8.5kW model)

• HPWA110 (11kW model)

• HPWA130 (13kW model)

Need help confirming the right part? Contact our expert team with your model number or serial code—we’re happy to check compatibility for you.

 When Should You Replace the PCB Board?

Replace the HPAS18M if:

• The heat pump shows persistent error codes or will not initialise

• There's evidence of power surges, moisture ingress, or burnt components

• Communication between sensors and the system is unreliable or absent

• You are completing a major repair or refurbishment of the heat pump control system

Attempting to operate a heat pump with a faulty PCB can lead to poor performance, increased energy use, or system lockout—timely replacement is key.

Technical Specifications

• Part Number: HPAS18M

• Manufacturer: Grant UK

• Component: Printed Circuit Board (main controller)

• Power Supply: Model-specific, integrated via system wiring

• Application: Grant Aerona³ R32 Air Source Heat Pump range

• Pre-Configured: Supplied with default Grant firmware (not user-programmable)

• Mounting: Enclosed in PCB housing within heat pump chassis (qualified installer required)

• Safety: Built-in diagnostics and fail-safe functionality