Air Source Heat Pump Service

Requirements

CTE Services were called to inspect an air source heat pump installation that had been running for 4 years.

After initial contact, we booked in a full service that included a full system check and full inspection and clean of the outdoor air source heat pump.

Scope of Works

We started by inspecting the entire installation from the outdoor unit to the plant room and emitters. All components were thoroughly checked and confirmed to be working as they were intended.

Our engineers proceeded to service the outdoor unit, this included a full breakdown of the unit and a thorough clean of all the components within the heat pump. We also checked the voltage from the unit and all electrical components. Having serviced the heat pump we switched the heat pump on and went through all the settings.

We realised the heat pump settings were not entered to ensure the heat pump ran as efficient as possible.

After a few minor alterations and confirmation from the Mitsubishi technical department, we were able to reduce the flow temperatures and therefore reduce the customers running costs.

Challenges

Once our initial inspection was complete, our engineers noticed the potable expansion vessel had no charge in the diaphragm.

Having drained the pipework, the expansion vessel was taken off and recharged to the manufacturer’s specification. This however did not solve the problematic component due to the internal diaphragm being fractured.

We notified the customer and one of our engineers left site and supplied a new 24 litre expansion vessel which was then installed to the system. By doing this there and then our customer was happy as we didn’t need to have a return visit.