Your heat pump has stopped because the refrigerant gas is getting too hot, likely due to a blockage or restricted water flow through the system.

Condensing Temperature High Error

What causes this fault?

This fault occurs when the refrigerant gas inside the unit reaches a dangerously high temperature, causing the system to shut down for safety. The most common reason is that heat isn't being moved away from the unit fast enough, often due to a blockage in the pipes, a failing pump, or a build-up of sludge in the system filter.