Our team recently completed a full service on a Daikin 5kW air source heat pump and hot water cylinder in Hingham, Norfolk.

As part of the service, we:
🔹 Cleaned the internal gauze filter
🔹 Recharged the expansion vessel
🔹 Cleaned the external coil

During our checks, we identified a fault code AH-00 – “Tank disinfection function not completed correctly.”
After further investigation, we discovered the immersion heater switch had burnt out, preventing the Legionnaires’ cycle from completing as intended. We replaced the faulty switch, and the system is now back up and running efficiently, ready for another year of reliable service.

Regular servicing like this is essential to maintain performance, improve efficiency, and prevent costly breakdowns, ensuring your heat pump operates safely all year round.

📍 We service all makes and models of air source heat pumps across Norfolk, including Hingham, Wymondham, Dereham, Attleborough, and surrounding villages.

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